Tongkat Ali (Longjack)
Hormone Support
Also known as: Eurycoma longifolia, Longjack, Malaysian ginseng, Pasak bumi, Tongkat Ali (Eurycoma longifolia)
B
Grade B💊 200-400mg standardized extract🎯 7 primary uses🔗 2 synergies⚠️ Review warnings
Levels upStress & Mood+50 pts
Overview
A Southeast Asian herb traditionally used to support testosterone levels and male vitality. Recent clinical evidence suggests it may modestly improve testosterone, muscle strength, and sexual function in men.
Primary Uses
Testosterone supportLibidoSHBG reductionStressMale sexual functionMuscle strength and recoveryEnergy and vitality
Frequently Asked About Tongkat Ali (Longjack)
How much Tongkat Ali (Longjack) should I take?
The typical effective range is 200-400mg standardized extract. Individual needs vary based on age, body weight, diet, and goals — start at the lower end and adjust based on response. Always consult a healthcare provider before starting a new supplement.
When is the best time to take Tongkat Ali (Longjack)?
Morning. Consistency matters more than perfect timing — pick a daily anchor (e.g. with breakfast or before bed) and stick with it.
Should I take Tongkat Ali (Longjack) with food?
Either.
Does Tongkat Ali (Longjack) interact with medications?
Yes — known interactions include Diabetes meds and Blood pressure meds. If you take any prescription medication, talk to your doctor or pharmacist before starting Tongkat Ali (Longjack).
What does Tongkat Ali (Longjack) pair well with?
Tongkat Ali (Longjack) stacks well with Ashwagandha and Zinc — these combinations either improve absorption or work synergistically toward common goals.
Who should not take Tongkat Ali (Longjack)?
Tongkat Ali (Longjack) should be avoided or used with caution by people with Hormone-sensitive cancers and Heart conditions. Pregnant or breastfeeding women should consult a healthcare provider before use.
What are the side effects of Tongkat Ali (Longjack)?
Most people tolerate Tongkat Ali (Longjack) well. The most commonly reported side effects are Insomnia, Irritability, and Restlessness. Side effects are usually dose-dependent — lowering the dose often resolves them.
Dosage
Typical range
200-400mg standardized extract
Timing
Morning
With food
Either
Duration
4+ weeks for effects
Special Populations
Men with low testosterone, stress
Research & Studies
Search the literature now
We haven’t curated landmark studies for Tongkat Ali (Longjack)yet — one-click into the primary literature here. PubMed (RCTs) is usually the highest-signal starting point.
Search Tongkat Ali (Longjack) research
Mechanism of Action
- • May increase free testosterone
- • Reduces SHBG binding
- • Cortisol reduction
Evidence Quality
Evidence Grade B
Multiple studies showing testosterone and fertility benefits
Safety & Contraindications
Serious Warnings
- • May affect hormone-sensitive conditions
Contraindications
- • Hormone-sensitive cancers
- • Heart conditions
Common Side Effects
- • Insomnia
- • Irritability
- • Restlessness
Pregnancy & Breastfeeding
Avoid
Liver & Kidney Notes
No major concerns
Interactions
💊 Medications
- • Diabetes meds
- • Blood pressure meds
🧪 Supplements
- • Other testosterone boosters
🍽️ Food & Alcohol
- • No interactions
Stacking & Synergies
Pairs Well With
Avoid Combining With
Nothing specific
Best Goal Synergies
Free testosterone increase
Buying Guide
What to Look For
- • Third-party tested
- • Eurycomanone content
Standardization Markers
Eurycomanone content2% minimum
Adulteration risk
HIGH - often underdosed
Practical Notes
- • Quality varies greatly
- • Third-party testing important
Tags
testosteronelibidoSHBGmale healthhormone-supporttraditional-usemale-healthstandardization-important
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Related Guides
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More in Hormone Support
Other ingredients in the Hormone Support category.
Black Cohosh
Black cohosh is a traditional herbal remedy primarily used for menopausal symptom relief, with moderate clinical evidence supporting its efficacy for hot flashes and night sweats. Its mechanisms likely involve phytoestrogen activity and serotonergic pathways, though the active constituents remain incompletely characterized.
DHEA (Dehydroepiandrosterone)
DHEA is an endogenous adrenal hormone and precursor to testosterone and estrogen, with declining levels in aging. Supplementation aims to restore youthful hormone levels and support energy, mood, and sexual function.
Dong Quai
Dong quai (Angelica sinensis) is a traditional Chinese medicinal root used to support women's health and hormonal balance, particularly during menopause and menstrual cycles. Scientific evidence for efficacy is mixed, with limited high-quality clinical trials.
Fadogia Agrestis
Nigerian shrub gaining popularity for testosterone. Limited human research, animal studies promising.
Fadogia Agrestis
African herb gaining popularity for testosterone support, though human evidence is limited.
Fenugreek
Seed extract that may support testosterone and libido. Also supports blood sugar.
Last reviewed: September 2026 by the Formulate Research Team. Sources cited above; methodology and scoring criteria published here.
Cite this page
Formulate Research Team. (2026, September). Tongkat Ali (Longjack) — Evidence-Based Supplement Guide. Formulate Supplement Encyclopedia. https://app.formulate-health.app/learning/supplements/tongkat-ali
Educational content based on published research and our scoring methodology. Not medical advice — consult a qualified healthcare provider before starting, stopping, or changing supplements, especially if you take medications, are pregnant, or have a medical condition.