Hammer Labz Trojan Test 90 caps

Tongkat ali (Eurycoma longifolia)

Tongkat ali (Eurycoma longifolia) is a Southeast Asian shrub whose root extract is marketed for male vitality².

Horny goat weed (Epimedium, icariin)

Horny goat weed (Epimedium species) contains icariin, which inhibits the enzyme PDE5 in laboratory studies, the same target as erectile-dysfunction medicines.

Fenugreek (Trigonella foenum-graecum)

Fenugreek seed extracts, rich in saponins, are marketed for male vitality and testosterone.

Plant "anabolic" sterols (laxogenin, ecdysterone)

Laxogenin (5α-hydroxy-laxogenin) and ecdysteroids such as ecdysterone (20-hydroxyecdysone, from Ajuga turkestanica or Cyanotis) are plant sterols marketed as natural anabolic agents.

Mucuna pruriens (velvet bean, L-DOPA)

Mucuna pruriens seeds naturally contain L-DOPA (levodopa), the precursor of dopamine and the main medicine for Parkinson's disease.

D-aspartic acid (DAA / NMDA)

D-aspartic acid is an amino acid involved in hormone release in the brain and testes, marketed as a "testosterone booster". N-methyl-D-aspartic acid (NMDA) is a related compound.

Saw palmetto (Serenoa repens)

Saw palmetto (Serenoa repens) berry extract is used for urinary symptoms of benign prostatic enlargement; some extracts are licensed herbal medicines in Europe³.

Maca (Lepidium meyenii)

Maca is an Andean root vegetable sold as a powder or extract for energy and libido.

Zinc

Zinc is an essential trace element for enzymes, immune function and protein synthesis. EFSA set population reference intakes of 9.4–16.3 mg a day for men and 7.5–12.7 mg a day for women, depending on dietary phytate⁴.

Tongkat ali (Eurycoma longifolia)

A meta-analysis of clinical trials found that tongkat ali supplementation increased total testosterone in men, particularly in men with low testosterone, but concluded that more research is needed before clinical use².

Horny goat weed (Epimedium, icariin)

Evidence for benefits comes mainly from laboratory and animal studies; robust human trials are lacking.

Fenugreek (Trigonella foenum-graecum)

A 2026 meta-analysis of randomised trials found a possible small effect on total testosterone, with very uncertain evidence and no stable benefit for free testosterone; it concluded that current evidence does not support testosterone-boosting claims⁵.

Plant "anabolic" sterols (laxogenin, ecdysterone)

In a 12-week randomised double-blind training study, a commercial ecdysterone product gave no additional benefit over training alone, and its actual content differed markedly from the label⁶. In castrated rats, 5α-hydroxy-laxogenin showed neither androgenic nor anabolic effects⁷.

Mucuna pruriens (velvet bean, L-DOPA)

A 12-month randomised trial in untreated Parkinson's disease in sub-Saharan Africa found Mucuna pruriens could be a cost-effective alternative where commercial levodopa is not available⁸. There is no good evidence that it raises testosterone or improves mood or performance in healthy people.

D-aspartic acid (DAA / NMDA)

Systematic reviews found inconsistent effects of D-aspartic acid on testosterone, with no reliable increase in most trials in men⁹¹⁰.

Saw palmetto (Serenoa repens)

A systematic review of recent clinical studies found improvements in prostate symptom scores in several trials, more consistently with hexane-extracted preparations, with variable effects on urinary flow³.

Maca (Lepidium meyenii)

A systematic review of animal and human studies found that maca compounds, mainly macamides, increased physical performance, with larger effects at higher doses¹¹.

Zinc

Authorised EU claims include that zinc contributes to normal immune function, normal fertility and reproduction, and the maintenance of normal testosterone levels in the blood¹². These claims do not mean that extra zinc raises testosterone in people with adequate zinc.

Tongkat ali (Eurycoma longifolia)

The trials are small, often industry-funded and use different extracts².

Horny goat weed (Epimedium, icariin)

Human evidence is limited.

Fenugreek (Trigonella foenum-graecum)

The evidence is very uncertain⁵.

Plant "anabolic" sterols (laxogenin, ecdysterone)

Label accuracy is poor and human trials are few⁶.

Mucuna pruriens (velvet bean, L-DOPA)

The trial used standardised preparations under medical supervision; larger double-blind trials are needed⁸. Supplements rarely state their L-DOPA content.

D-aspartic acid (DAA / NMDA)

Trials are small, short and heterogeneous⁹.

Saw palmetto (Serenoa repens)

Extracts, doses and study designs vary widely, limiting comparison³. Results from licensed extracts do not apply to all supplements.

Maca (Lepidium meyenii)

Much of the evidence is from animal studies¹¹.

Zinc

Effects beyond correcting low zinc status are not established.

• Do not exceed the recommended daily dose.
• Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.
• Keep out of the reach of young children.

Tongkat ali (Eurycoma longifolia)

Generally well tolerated in short trials; long-term safety is not established. People with hormone-sensitive conditions should ask a doctor first.

Horny goat weed (Epimedium, icariin)

Case reports describe toxicity with severe muscle spasms and raised creatine kinase¹³, and new-onset psychosis in a person with Parkinson's disease¹⁴.

Fenugreek (Trigonella foenum-graecum)

Generally well tolerated; it may lower blood sugar and can cause digestive upset. Avoid in pregnancy.

Plant "anabolic" sterols (laxogenin, ecdysterone)

Human safety data are limited.

Mucuna pruriens (velvet bean, L-DOPA)

L-DOPA can cause nausea, low blood pressure, involuntary movements and psychiatric effects, and it interacts with MAO inhibitors, antipsychotics and Parkinson's medicines. People with heart disease, psychiatric conditions or melanoma history should not use it without medical advice.

D-aspartic acid (DAA / NMDA)

Generally well tolerated in short trials; NMDA itself is a neuroactive research chemical with no human safety data.

Saw palmetto (Serenoa repens)

Generally well tolerated. Urinary symptoms should be assessed by a doctor before self-treatment to rule out other causes.

Maca (Lepidium meyenii)

Generally regarded as safe as a food.

Zinc

The EU Scientific Committee on Food set a tolerable upper intake level of 25 mg a day for adults; long-term excess can cause copper deficiency¹.

Sold as a food supplement. Health claims shown are authorised EU claims (Regulation 432/2012) and apply at the stated daily amount.

Tongkat ali (Eurycoma longifolia)

No health claim for this ingredient is authorised in the EU¹²; botanical ingredients are sold under national food-supplement rules¹⁵.

Horny goat weed (Epimedium, icariin)

No health claim for this ingredient is authorised in the EU¹²; it is sold under national food-supplement rules¹⁵.

Fenugreek (Trigonella foenum-graecum)

No health claim for this ingredient is authorised in the EU¹²; botanical ingredients are sold under national food-supplement rules¹⁵.

Plant "anabolic" sterols (laxogenin, ecdysterone)

These plant sterols are not authorised novel foods in the EU¹⁶. Ecdysterone is on the World Anti-Doping Agency monitoring programme¹⁷.

Mucuna pruriens (velvet bean, L-DOPA)

Because it contains levodopa, a medicinal substance, the classification of Mucuna pruriens products differs between EU Member States¹⁸. No health claim for this ingredient is authorised in the EU¹²; botanical ingredients are sold under national food-supplement rules¹⁵.

D-aspartic acid (DAA / NMDA)

No health claim is authorised¹². NMDA is not an authorised food ingredient in the EU¹⁶.

Saw palmetto (Serenoa repens)

Some saw palmetto extracts are authorised as traditional or well-established herbal medicines; as a food supplement ingredient no health claim is authorised¹⁸¹².

Maca (Lepidium meyenii)

No health claim for this ingredient is authorised in the EU¹²; it is sold under national food-supplement rules¹⁵.

Zinc

It is a permitted nutrient in EU food supplements¹⁵; authorised claims may only be used in their approved wording and when the product is at least a source of the nutrient¹².