Black Ant

What Is Black Ant?

Black ant is exactly as it sounds… black ants. They contain a rich source of zinc, and other trace minerals, and provide a potent dose of protein. They are low in fat and carbohydrates, and contain a fibre known as chitin. As a nutritional supplement black ants are perfect for the body builder or athlete. The zinc, complete protein, and high fiber makes them one of the most well rounded protein sources available.

Aside from the nutritional value, black ants have a few reported medicinal actions. They contain the insect steroid ecdysterone (20-hydroxyecdysone); isolated ecdysterone showed a mild anabolic effect in one human strength-training trial, but that was the purified compound at high doses — black ant’s own ecdysterone content is unquantified and the ant itself has never been tested for muscle or performance outcomes (see the research section below).

In Chinese medicine where its use is most popular, black ant is used as a cognitive enhancer for students, to promote the repair of broken or damaged bone and muscle tissue, as an athletic performance enhancer, and to treat sexual dysfunctions in both men and women.

Consuming black ant is easy, as it can be taken as a powder in a smoothie or protein shake, made into baked goods, capsulated, or taken as a liquid extract.

What Is Black Ant Used For?

Black ant is mainly used as an athletic performance enhancer as an addition to the supplementing regimen. It’s also popular amongst students looking to increase their cognitive endurance for long hours of study.

The nutritional content of black ant, especially the protein and zinc make it useful for a wide range of conditions from a nutritional standpoint, including anemia, poor immune function, malnutrition, and weak sexual function.

Traditional Uses

In places like Taiwan, Hong Kong, and Shanghai, where this supplement is very popular, it’s sold in many health clubs as a pre-workout elixir. Students in these areas also commonly consume this to prevent burnout from a busy workload, and to improve their concentration.

Traditional Chinese Medicine

In traditional Chinese medicine, black ant is considered a premier Qi tonic, considered by some to be even more powerful than the highly esteemed Ginseng. It’s considered an adaptogen and is in the same class of “superstar” Chinese tonics as Eleuthero (Siberian ginseng), cordyceps, reishi (Ganoderma), and schizandra (Teeguarden, 1998).

A Note on Consuming Insects

Consuming insects as food or medicine is not a new concept, and likely predates human history. Fortunately in modern times we have the ability to extract the desired constituents from these insects in either a liquid extract, or powder form where it can then be encapsulated, added to smoothies, or baked with. In this way we can consume bugs, without having to actually eat them.

Entomological Info

Polyrhachis as a genus contains 697 species. Although only Polyrhachis vicina has been thoroughly studied, it’s likely that many of these other species contain very similar compounds.

Chemical Constituents of Black Ant

The nutritional content of black ant is quite impressive, containing between 42% and 67% protein of total weight, and only 10% fat content. On top of this, black ant contains high amounts of chitin, which is an insoluble fibre found in the exoskeletons of insects as well as in fungi.

The amino acid content in black ants is also impressive, with the limiting amino acids being methionine, and cysteine. Phenylalanine, tyrosine, and tryptophan are all contained in high amounts in black ant. These amino acids all are used as precursors to various neurotransmitters in the brain and throughout the body, it’s important to have a healthy dose of these amino acids in order to maintain healthy levels of these neurotransmitters. This may play a role in some of black ant’s effects in combatting low libido, improving sexual health, and enhancing athletic performance.

Black ant also contains high amounts of the minerals calcium, zinc, magnesium, and manganese, and also includes potassium, phosphorous, iron, selenium, chromium, and sodium.

Vitamins included in black ant are B1, B2, B12, D, and E. On top of this, black ant contains high amounts of the steroid ecdysterone. This compound has been the study of a lot of recent research for its growth stimulating effects.

Phytochemistry

Black ant is best understood as a dense nutritional matrix rather than a single-active herb. Its defining feature is a very high protein content — analyses of Polyrhachis vicina report roughly 42–67% of dry weight as protein, with a complete amino-acid profile, against only about 9–10% fat ^{1Reference 1Wang et al. · 2010Nutritional composition of Polyrhachis vicina Roger (Edible Chinese black ant) — compositional analysis}. The exoskeleton contributes chitin, an insoluble polysaccharide fibre ^{1Reference 1Wang et al. · 2010Nutritional composition of Polyrhachis vicina Roger (Edible Chinese black ant) — compositional analysis}.

The trace-mineral fraction is the second signature, dominated by zinc — black ants are often cited as among the most zinc-dense organisms known — alongside calcium, magnesium, manganese, iron and selenium ^{1Reference 1Wang et al. · 2010Nutritional composition of Polyrhachis vicina Roger (Edible Chinese black ant) — compositional analysis}. The amino acids phenylalanine, tyrosine and tryptophan are present in quantity (with methionine and cysteine the limiting pair), serving as neurotransmitter precursors ^{1Reference 1Wang et al. · 2010Nutritional composition of Polyrhachis vicina Roger (Edible Chinese black ant) — compositional analysis}.

The most-discussed single bioactive is the steroid hormone ecdysterone (20-hydroxyecdysone), structurally androgen-like and studied for mild anabolic and growth-promoting effects; the sterol beta-sitosterol and B-group vitamins are also reported ^{1Reference 1Wang et al. · 2010Nutritional composition of Polyrhachis vicina Roger (Edible Chinese black ant) — compositional analysis}.

Constituent Summary

Figures are share of dry weight unless noted, from compositional analysis of Polyrhachis vicina; values vary with species, season and processing ^{1Reference 1Wang et al. · 2010Nutritional composition of Polyrhachis vicina Roger (Edible Chinese black ant) — compositional analysis}.

Amino Acids & Proteins

Grouped by class · 7 compoundsExpand all|Collapse all

GroupCompoundAmount

Protein1 compound1 with data

ProteinProtein~42–67% (dry weight)

Amino acid6 compounds3 with data

Amino acidAmino acids18 amino acids present

Amino acidPhenylalanineNo data

Amino acidTyrosineNo data

Amino acidTryptophanNo data

Amino acidMethioninelimiting amino acid

Amino acidCysteinelimiting amino acid

Vitamins & Minerals

Grouped by class · 7 compoundsExpand all|Collapse all

GroupCompoundAmount

Mineral6 compounds5 with data

MineralZincpredominant trace mineral

MineralCalciumpredominant mineral

MineralMagnesiumpredominant mineral

MineralManganesepredominant mineral

MineralIronpredominant mineral

MineralSeleniumNo data

Vitamin1 compound1 with data

VitaminB vitaminsB1, B2, B12

Terpenoids & Lipids

Grouped by class · 2 compoundsExpand all|Collapse all

GroupCompoundAmount

Sterol2 compoundsno data

SterolEcdysteroneNo data

Sterolbeta-SitosterolNo data

Carbohydrates

Grouped by class · 1 compoundExpand all|Collapse all

GroupCompoundAmount

Polysaccharide1 compoundno data

PolysaccharideChitinNo data

Pharmacology & Research

Black ant (Polyrhachis spp., usually P. vicina / P. dives) has a modest but surprisingly active preclinical literature — a few dozen papers, the great majority produced by a single line of Chinese research on an ethanol/petroleum-ether “active fraction of Polyrhachis vicina Rogers” (abbreviated AFPR). That work maps consistent anti-inflammatory, antioxidant and monoaminergic-antidepressant signals across rat and cell models, with narrower reports on anticancer, neuroprotective, analgesic, bone, hyperuricaemia and immune activity. The evidence tier is almost entirely animal in vivo and in vitro — there is no registered clinical trial of black ant in any form, and the one human RCT often invoked for its “anabolic” reputation tested isolated ecdysterone, not the ant. The central caveat runs through everything below: AFPR is a concentrated solvent fraction, not the whole-ant powder or liquid extract people actually consume, so potency and even which compounds are present may not transfer to the marketed tonic.

0. Evidence by indication

Support is an experimental score I’m building — a composite weighted by study type (human > animal > in vitro > review) and study volume. It’s a beta: a fast way to rank strength of evidence at a glance, not a validated metric, and I’ll keep honing the formula over time. Each indication name links down to its write-up.

Indication	Support	Rests on
Antidepressant	██████░░░░ 62%	Several rat models + mechanism (monoamine/MAO, cAMP–CREB–BDNF); AFPR fraction, no human data
Anti-inflammatory	██████░░░░ 60%	Reproduced cytokine/oedema suppression across models; one study is a related species (P. lamellidens)
Antioxidant	██████░░░░ 56%	In vitro radical scavenging + polyphenol ID; SOD↑/MDA↓ as a secondary readout in vivo
Anticancer	█████░░░░░ 54%	Breast xenograft + colorectal in vivo, mechanistic; solvent fraction, disease-specific
Neuroprotective	█████░░░░░ 52%	Two rat models (stroke, Alzheimer’s) with mechanism; no human data
Analgesic	█████░░░░░ 48%	Single mouse study (writhing, hot-plate) on a related Polyrhachis species
Bone support	█████░░░░░ 46%	One study: osteoclast inhibition in vitro + ovariectomy mouse model
Hypouricemic	████░░░░░░ 44%	One rat hyperuricaemia study (xanthine-oxidase and urate-transporter effects)
Immunomodulatory	████░░░░░░ 42%	Single older mouse study of bidirectional immunoregulation
Athletic performance	████░░░░░░ 40%	Constituent inference: human RCT exists for isolated ecdysterone, not the ant; ant dose unknown

1. Antidepressant

This is the most-developed strand. In a reserpine-induced rat depression model, AFPR (160 and 320 mg/kg) shortened immobility in forced-swim and tail-suspension tests without altering locomotion, raised dopamine, serotonin and noradrenaline, and normalised monoamine-oxidase (MAO) activity ^{2Reference 2Wei et al. · 2018AnimalAntidepressant-like effect of active fraction of Polyrhachis vicina Roger in a rat depression model — animal in vivoView study →}. A network-pharmacology study backed by in vitro and in vivo validation found AFPR raised PRKACA, CREB and beta-sitosterol-adjacent cAMP-signalling proteins and BDNF, pointing to a neuroplasticity mechanism ^{3Reference 3He et al. · 2023In vitroIntegrating network pharmacology, molecular docking and pharmacological evaluation for exploring Polyrhachis vicina Rogers in ameliorating depression — in vitro and in vivoView study →}. A third study tied AFPR’s antidepressant effect to reduced neuroinflammation through an FTO/miR-221-3p/SOCS1 axis that lowered NF-κB, IL-6 and IL-7 ^{4Reference 4He et al. · 2023AnimalActive fraction of Polyrhachis vicina Roger ameliorates depression-induced inflammation via the FTO/miR-221-3p/SOCS1 axis — rat and cell modelView study →}. The convergence across independent models is the strength here.

Gap: every result is in rodents using the AFPR solvent fraction; no human trial, and the whole-ant tonic has never been tested for mood effects.

2. Anti-inflammatory

Anti-inflammatory activity is the mechanistic thread most other AFPR findings hang on. An ethanol extract of the related medicinal ant Polyrhachis lamellidens inhibited xylene-induced ear oedema and acetic-acid-induced vascular permeability in mice, supporting the traditional use in inflammatory conditions ^{5Reference 5Kou et al. · 2005AnimalAnalgesic and anti-inflammatory activities of total extract and individual fractions of Chinese medicinal ants Polyrhachis lamellidens — mouse in vivoView study →}. In a rat hyperuricaemia model, AFPR significantly lowered serum IL-1β, IL-6 and TNF-α alongside its urate-lowering effect ^{8Reference 8Su et al. · 2018AnimalHypouricemic and nephroprotective effects of an active fraction from Polyrhachis vicina Roger on potassium-oxonate-induced hyperuricemia in rats — animal in vivoView study →}. Across the anticancer and antidepressant work, NF-κB down-regulation recurs as the shared node ^{4,9Reference 4He et al. · 2023AnimalActive fraction of Polyrhachis vicina Roger ameliorates depression-induced inflammation via the FTO/miR-221-3p/SOCS1 axis — rat and cell modelView study →Reference 9Li et al. · 2020In vitroActive fraction of Polyrhachis vicina Rogers suppressed breast cancer growth and progression via the EGR1/lncRNA-NKILA/NF-κB axis — xenograft and in vitroView study →}. Reported active constituents include the fatty acid elaidic acid and polyphenols such as gallic acid ^{6,10Reference 6Zhang et al. · 2022In vitroCharacterization, antioxidant activities, and pancreatic lipase inhibitory effect of extract from the edible insect Polyrhachis vicina — in vitroView study →Reference 10Li et al. · 2023In vitroThe active fraction of Polyrhachis vicina Roger activates ERK to cause necroptosis in colorectal cancer — in vivo and in vitroView study →}.

Gap: the cleanest in vivo anti-inflammatory data are from a different Polyrhachis species, and no study used the whole-ant preparation at a dietary dose.

3. Antioxidant

A hydro-ethanolic extract of P. vicina showed strong in vitro radical-scavenging and pancreatic-lipase inhibition; LC-MS/GC-MS identified ~60 components, with salicylic acid, gallic acid, liquiritigenin and naringenin as the major polyphenols driving the activity ^{6Reference 6Zhang et al. · 2022In vitroCharacterization, antioxidant activities, and pancreatic lipase inhibitory effect of extract from the edible insect Polyrhachis vicina — in vitroView study →}. Antioxidant capacity also appears as a secondary readout in the disease models — AFPR raised superoxide dismutase and lowered malondialdehyde in hyperuricaemic rats ^{8Reference 8Su et al. · 2018AnimalHypouricemic and nephroprotective effects of an active fraction from Polyrhachis vicina Roger on potassium-oxonate-induced hyperuricemia in rats — animal in vivoView study →}, and scavenged RANKL-induced reactive oxygen species in osteoclast assays ^{7Reference 7Feng et al. · 2024In vitroActive fraction of Polyrhachis vicina (Rogers) inhibits osteoclastogenesis by targeting Trim38-mediated proteasomal degradation of TRAF6 — mouse model and in vitroView study →}.

Gap: the primary antioxidant evidence is a test-tube chemistry profile; whether these polyphenols survive digestion and reach tissue at meaningful levels from an ant supplement is untested.

4. Anticancer

Two AFPR studies reach in vivo. In breast cancer, AFPR suppressed MCF-7 proliferation, migration and xenograft tumour growth by up-regulating the long non-coding RNA NKILA (via EGR1) to inactivate NF-κB ^{9Reference 9Li et al. · 2020In vitroActive fraction of Polyrhachis vicina Rogers suppressed breast cancer growth and progression via the EGR1/lncRNA-NKILA/NF-κB axis — xenograft and in vitroView study →}. In colorectal cancer, AFPR triggered ERK-dependent necroptosis and slowed tumour growth in a xenograft model, with elaidic acid identified by GC-MS as a driver ^{10Reference 10Li et al. · 2023In vitroThe active fraction of Polyrhachis vicina Roger activates ERK to cause necroptosis in colorectal cancer — in vivo and in vitroView study →}. Both are mechanistically detailed but disease-specific and use the concentrated fraction.

Gap: no whole-animal survival or human data; effects are for a solvent fraction at pharmacological doses, not a food-level intake.

5. Neuroprotective

Beyond mood, two rat studies show structural neuroprotection. In cerebral ischaemia/reperfusion (middle-cerebral-artery-occlusion) rats, oral AFPR improved neurological scores, reduced infarct area and promoted mitophagy and angiogenesis through SIRT3 ^{11Reference 11Wei et al. · 2023AnimalActive fraction of Polyrhachis vicina (Roger) alleviated cerebral ischemia/reperfusion injury by targeting SIRT3-mediated mitophagy and angiogenesis — rat modelView study →}. In an amyloid-β Alzheimer’s rat model, AFPR improved Morris-water-maze memory and suppressed β-amyloid deposition by down-regulating the EGR1/BACE1/APP axis, dose-dependently ^{12Reference 12He et al. · 2022AnimalPolyrhachis vicina Roger alleviates memory impairment in a rat model of Alzheimer’s disease through the EGR1/BACE1/APP axis — animal in vivoView study →}.

Gap: single studies per condition, rodent-only, AFPR fraction; the recurring EGR1 mechanism needs independent replication.

6. Analgesic

In mice, an ethanol extract of Polyrhachis lamellidens raised the hot-plate pain threshold and inhibited acetic-acid-induced writhing at 1.5-3.0 g crude drug/kg, with the diethyl-ether fraction contributing most of the analgesic effect ^{5Reference 5Kou et al. · 2005AnimalAnalgesic and anti-inflammatory activities of total extract and individual fractions of Chinese medicinal ants Polyrhachis lamellidens — mouse in vivoView study →}. This is a plausible correlate of the traditional use for rheumatic and inflammatory pain.

Gap: one mouse study, on a related species rather than the marketed P. vicina/dives, at high crude-drug doses; no human analgesia data.

7. Bone support

Relevant to the page’s “bone and joint” positioning: AFPR inhibited RANKL-induced osteoclast differentiation and bone resorption in vitro without cytotoxicity, scavenged osteoclast ROS, and reduced bone loss in an ovariectomy-induced osteoporosis mouse model, acting through Trim38-mediated proteasomal degradation of TRAF6 to shut down NF-κB ^{7Reference 7Feng et al. · 2024In vitroActive fraction of Polyrhachis vicina (Rogers) inhibits osteoclastogenesis by targeting Trim38-mediated proteasomal degradation of TRAF6 — mouse model and in vitroView study →}. An older rat study also reported that P. vicina feeding improved fetal growth indices, attributed partly to amino acids, minerals and ecdysterone ^{14Reference 14Duan et al. · 1999AnimalTreatment of intrauterine growth retardation with ant Polyrhachis vicina Roger — rat modelView study →}.

Gap: a single dedicated osteoporosis study; the “repairs broken bone” tradition is not directly tested, and the anabolic contribution is inferred from ecdysterone rather than measured.

8. Hypouricemic

In potassium-oxonate-induced hyperuricaemic rats, 12 weeks of oral AFPR lowered serum uric acid, inhibited hepatic and serum xanthine oxidase, reduced creatinine and BUN, and down-regulated the renal urate transporters URAT1 and GLUT9 while up-regulating OAT1 — a coherent urate-lowering and kidney-protective profile ^{8Reference 8Su et al. · 2018AnimalHypouricemic and nephroprotective effects of an active fraction from Polyrhachis vicina Roger on potassium-oxonate-induced hyperuricemia in rats — animal in vivoView study →}.

Gap: one rat model; no human gout or hyperuricaemia data, and the effective dose was a concentrated fraction given for three months.

9. Immunomodulatory

This underpins the traditional “immune tonic” claim. In mice, P. vicina had no effect on immune organ weight or delayed-type hypersensitivity in healthy animals, but restored non-specific and humoral immune function in hydrocortisone-immunosuppressed mice and normalised both suppressed and over-activated DTH responses — i.e. bidirectional immunoregulation rather than blanket stimulation ^{13Reference 13Cai et al. · 2001AnimalThe effects of Polyrhachis vicina on immunoregulation in mice — animal in vivoView study →}.

Gap: a single older study with limited mechanistic detail; the popular framing of black ant as a broad immune stimulant overstates what one normalising mouse study shows.

10. Athletic performance

The marketed “natural anabolic” identity rests on the ecdysteroid content, not on the ant. Isolated ecdysterone (20-hydroxyecdysone) produced significant gains in muscle mass and one-repetition bench press over a 10-week randomised strength-training study in men, with a parallel hypertrophic effect in C2C12 myotubes — the effect appears to be estrogen-receptor mediated ^{15Reference 15Isenmann et al. · 2019RCTEcdysteroids as non-conventional anabolic agent: performance enhancement by ecdysterone supplementation in humans — randomised controlled trialView study →}. In rats, the metabolite poststerone and 20-hydroxyecdysone both enlarged muscle-fibre cross-sectional area ^{16Reference 16Csábi et al. · 2019AnimalPoststerone increases muscle fibre size partly similar to its metabolically parent compound, 20-hydroxyecdysone — rat in vivoView study →}. Black ant does contain ecdysterone ^{1,14Reference 1Wang et al. · 2010Nutritional composition of Polyrhachis vicina Roger (Edible Chinese black ant) — compositional analysisReference 14Duan et al. · 1999AnimalTreatment of intrauterine growth retardation with ant Polyrhachis vicina Roger — rat modelView study →}, which is the mechanistic bridge — but the ant’s actual ecdysterone content is unquantified and almost certainly far below the hundreds of milligrams used in the human trial.

Gap: no study has tested black ant itself for performance or muscle outcomes; this is constituent-level inference across a large preparation and dose mismatch.

Mechanisms

Mechanism	Drives	Key compounds
NF-κB ↓, pro-inflammatory cytokines ↓	anti-inflammatory, anticancer, bone support	elaidic acid, gallic acid
ROS scavenging, SOD ↑ / MDA ↓	antioxidant, neuroprotective, bone support	naringenin, beta-sitosterol
Monoamine ↑, MAO modulation; cAMP–CREB–BDNF ↑	antidepressant, neuroprotective	AFPR (multi-component fraction)
Xanthine oxidase ↓, URAT1/GLUT9 ↓	hypouricemic	AFPR (multi-component fraction)
EGR1/BACE1/APP ↓; SIRT3 mitophagy ↑	neuroprotective (Alzheimer’s, stroke)	AFPR (multi-component fraction)
Estrogen-receptor-mediated anabolism	athletic performance	ecdysterone, poststerone

Clinical trials

No registered clinical trials of black ant were identified in ClinicalTrials.gov in any preparation — the human RCT evidence (NCT03452488 and related) covers isolated ecdysterone, not the ant, so the ant’s own evidence base is entirely preclinical.

Completed	Planned	Terminated	Preclinical
0	0	0	~20+

Last checked: July 2026.

Dosage

In research, black ant is almost always studied as the concentrated solvent fraction AFPR, dosed in rodents — not the whole-ant powder or tincture people take. The one human “anabolic” trial used isolated ecdysterone, not the ant, so none of these translate to a supplement serving.

Indication	Preparation	Dose	Est. dried-herb equivalent	Source
Antidepressant	AFPR (ethanol/petroleum-ether fraction), oral, rat	160–320 mg/kg/day	— (fraction, not whole ant; no marker % to back-convert)	2Reference 2Wei et al. · 2018AnimalAntidepressant-like effect of active fraction of Polyrhachis vicina Roger in a rat depression model — animal in vivoView study →
Neuroprotective (Alzheimer’s)	AFPR, oral, rat	3.65–30 mg/kg/day	—	12Reference 12He et al. · 2022AnimalPolyrhachis vicina Roger alleviates memory impairment in a rat model of Alzheimer’s disease through the EGR1/BACE1/APP axis — animal in vivoView study →
Neuroprotective (stroke)	AFPR, oral, rat	4–8 g raw drug/kg/day	order-of-magnitude above any dietary intake	11Reference 11Wei et al. · 2023AnimalActive fraction of Polyrhachis vicina (Roger) alleviated cerebral ischemia/reperfusion injury by targeting SIRT3-mediated mitophagy and angiogenesis — rat modelView study →
Hypouricemic	AFPR, oral, rat, 12 weeks	fraction dose (as reported)	—	8Reference 8Su et al. · 2018AnimalHypouricemic and nephroprotective effects of an active fraction from Polyrhachis vicina Roger on potassium-oxonate-induced hyperuricemia in rats — animal in vivoView study →
Analgesic / anti-inflammatory	Ethanol extract (P. lamellidens), oral, mouse	1.5–3.0 g crude drug/kg	high crude-drug dose	5Reference 5Kou et al. · 2005AnimalAnalgesic and anti-inflammatory activities of total extract and individual fractions of Chinese medicinal ants Polyrhachis lamellidens — mouse in vivoView study →
Athletic (ecdysterone, isolated)	Isolated ecdysterone capsules, human	up to several hundred mg/day	not derivable — ant’s ecdysterone content unquantified; no ratio invented	15Reference 15Isenmann et al. · 2019RCTEcdysteroids as non-conventional anabolic agent: performance enhancement by ecdysterone supplementation in humans — randomised controlled trialView study →

Most rows are the concentrated AFPR fraction with no published marker-to-whole-ant ratio, so a back-conversion would be invented — left ”—” deliberately. These are research doses, not recommendations.

Traditional Dosage

System	Preparation	Dose
Traditional Chinese Medicine	Dried whole-ant powder / capsules	~1–3 g/day as a tonic (traditional range; not standardised)
Western supplement use	Liquid extract / tincture	Per product labelling — no pharmacopoeial standard exists

Clinical Applications

Black ant is very useful as an athletic enhancement supplement, and for treating damaged bone and muscle. Its nutritional content makes it useful for blood deficiencies like some anemias, poor immune function (low WBC), and low albumin levels. It’s also useful for sexual dysfunction of various sources, and symptoms of malnutrition.

Safety

Black ant is a food-grade edible insect with a long consumption history and no serious toxicity reported in the preclinical literature; the practical caution the page notes — mild stimulation and possible sleep disturbance if taken late in the day — is reasonable but is a traditional observation rather than a documented adverse effect. The most important omission is allergenicity: edible insects share the pan-allergen tropomyosin with crustaceans and dust mites, and insect ingestion can provoke anaphylaxis through shellfish cross-reactivity, so anyone with a shellfish or dust-mite allergy should treat black ant as a likely cross-reactive food ^{17,18Reference 17Palmer et al. · 2020In vitroShellfish tropomyosin IgE cross-reactivity differs among edible insect species — in vitro immunoassayView study →Reference 18de Gier et al. · 2018ReviewInsect (food) allergy and allergens — reviewView study →}. Chitin from the exoskeleton is an insoluble fibre that can cause gastrointestinal discomfort in sensitive individuals. Because the ecdysterone content is unquantified and the compound is under investigation as a performance-enhancing agent, athletes subject to anti-doping testing should be aware that ecdysterone appears on WADA’s monitoring list.

Pregnancy & lactation

Not established — traditional use exists but human safety data do not. In traditional Chinese use Polyrhachis has been given as a tonic during pregnancy, and one rat study reported improved fetal growth indices with maternal supplementation ^{14Reference 14Duan et al. · 1999AnimalTreatment of intrauterine growth retardation with ant Polyrhachis vicina Roger — rat modelView study →}; however, no human pregnancy or lactation safety data exist, and the ecdysteroid content has hormone-like (estrogen-receptor-binding) activity of unknown relevance in pregnancy ^{15Reference 15Isenmann et al. · 2019RCTEcdysteroids as non-conventional anabolic agent: performance enhancement by ecdysterone supplementation in humans — randomised controlled trialView study →}. Absence of harm reports is not evidence of safety — avoid or use only under professional supervision.

Synergy

In the Chinese medical system, black ant is thought to have synergy with ginseng and codonopsis as a powerful Qi tonic.

References

1. Wang, X., Ji, X., Liu, Q., Hong, X., & Wang, J. (2010). Nutritional composition of Polyrhachis vicina Roger (Edible Chinese black ant) — compositional analysis. Songklanakarin Journal of Science and Technology, 32(6), 621-626.
2. Wei, G. et al. (2018). Antidepressant-like effect of active fraction of Polyrhachis vicina Roger in a rat depression model — animal in vivo. Journal of Traditional Chinese Medicine. https://pubmed.ncbi.nlm.nih.gov/32185947/
3. He, J. et al. (2023). Integrating network pharmacology, molecular docking and pharmacological evaluation for exploring Polyrhachis vicina Rogers in ameliorating depression — in vitro and in vivo. Drug Design, Development and Therapy. https://pubmed.ncbi.nlm.nih.gov/36923105/
4. He, J. et al. (2023). Active fraction of Polyrhachis vicina Roger ameliorates depression-induced inflammation via the FTO/miR-221-3p/SOCS1 axis — rat and cell model. Journal of Inflammation Research. https://pubmed.ncbi.nlm.nih.gov/38152570/
5. Kou, J. et al. (2005). Analgesic and anti-inflammatory activities of total extract and individual fractions of Chinese medicinal ants Polyrhachis lamellidens — mouse in vivo. Biological & Pharmaceutical Bulletin. https://pubmed.ncbi.nlm.nih.gov/15635188/
6. Zhang, Z. et al. (2022). Characterization, antioxidant activities, and pancreatic lipase inhibitory effect of extract from the edible insect Polyrhachis vicina — in vitro. Frontiers in Nutrition. https://pubmed.ncbi.nlm.nih.gov/35464030/
7. Feng, X. et al. (2024). Active fraction of Polyrhachis vicina (Rogers) inhibits osteoclastogenesis by targeting Trim38-mediated proteasomal degradation of TRAF6 — mouse model and in vitro. Phytomedicine. https://pubmed.ncbi.nlm.nih.gov/39033726/
8. Su, Q. et al. (2018). Hypouricemic and nephroprotective effects of an active fraction from Polyrhachis vicina Roger on potassium-oxonate-induced hyperuricemia in rats — animal in vivo. Kidney & Blood Pressure Research. https://pubmed.ncbi.nlm.nih.gov/29490297/
9. Li, D. et al. (2020). Active fraction of Polyrhachis vicina Rogers suppressed breast cancer growth and progression via the EGR1/lncRNA-NKILA/NF-κB axis — xenograft and in vitro. Biomedicine & Pharmacotherapy. https://pubmed.ncbi.nlm.nih.gov/31881485/
10. Li, D. et al. (2023). The active fraction of Polyrhachis vicina Roger activates ERK to cause necroptosis in colorectal cancer — in vivo and in vitro. Journal of Ethnopharmacology. https://pubmed.ncbi.nlm.nih.gov/37059246/
11. Wei, J. et al. (2023). Active fraction of Polyrhachis vicina (Roger) alleviated cerebral ischemia/reperfusion injury by targeting SIRT3-mediated mitophagy and angiogenesis — rat model. Phytomedicine. https://pubmed.ncbi.nlm.nih.gov/37797433/
12. He, L. et al. (2022). Polyrhachis vicina Roger alleviates memory impairment in a rat model of Alzheimer’s disease through the EGR1/BACE1/APP axis — animal in vivo. ACS Chemical Neuroscience. https://pubmed.ncbi.nlm.nih.gov/35675207/
13. Cai, Y. et al. (2001). The effects of Polyrhachis vicina on immunoregulation in mice — animal in vivo. Zhong Yao Cai. https://pubmed.ncbi.nlm.nih.gov/11668743/
14. Duan, T. et al. (1999). Treatment of intrauterine growth retardation with ant Polyrhachis vicina Roger — rat model. Zhonghua Fu Chan Ke Za Zhi. https://pubmed.ncbi.nlm.nih.gov/11326937/
15. Isenmann, E. et al. (2019). Ecdysteroids as non-conventional anabolic agent: performance enhancement by ecdysterone supplementation in humans — randomised controlled trial. Archives of Toxicology. https://pubmed.ncbi.nlm.nih.gov/31123801/
16. Csábi, J. et al. (2019). Poststerone increases muscle fibre size partly similar to its metabolically parent compound, 20-hydroxyecdysone — rat in vivo. Fitoterapia. https://pubmed.ncbi.nlm.nih.gov/30923008/
17. Palmer, L. et al. (2020). Shellfish tropomyosin IgE cross-reactivity differs among edible insect species — in vitro immunoassay. Molecular Nutrition & Food Research. https://pubmed.ncbi.nlm.nih.gov/32067335/
18. de Gier, S., & Verhoeckx, K. (2018). Insect (food) allergy and allergens — review. Molecular Immunology. https://pubmed.ncbi.nlm.nih.gov/29731166/