Fadogia Agrestis Dosage Australia 2026: How Much, When, and How Long to Take It

Last updated: September 27, 2026 · Originally published: May 3, 2026 · By Eternal Elixir Editorial

No fadogia agrestis dosage has been tested in people. In Australia in 2026, fadogia agrestis dosage advice rests on three rat studies and on product labels, which suggest 300 to 1,000 mg a day, most often one 600 mg capsule. No human trial of fadogia has been published. In the longest rat study, 28 days at every dose tested changed markers of testicular function. If you take it, the cautious approach is the lowest label dose, with breakfast, for short runs with breaks in between.

This guide covers how much fadogia people take and where that number comes from, what the rat studies used and found, what the labels on sale in Australia say, when to take it, how long to take it, who should avoid it, and the in-stock product we suggest instead.

Key numbers:

• No human trials of fadogia agrestis turned up in a PubMed search in September 2026. Every study of what it does was in rats.
• 18, 50 and 100 mg per kg of body weight were the rat doses behind the dosing advice you see online.
• 28 days of fadogia changed testicular function markers in rats at all three doses.
• 5 of 17 supplements sold as fadogia had none of the plant’s marker compounds detected in a 2019 lab analysis.
• $1.33 a serve for our in-stock pick, Tongkat Ali 200:1, at three capsules a day.

How Much Fadogia Agrestis Should You Take?

Fadogia agrestis is a shrub from West Africa whose stem is used in traditional medicine there as an aphrodisiac. Supplements sell a dried extract of the stem, usually labelled 10:1, which means ten parts of plant went into one part of extract.

No clinical trial has given fadogia to people, so no dose has been shown to work or to be safe. Examine, the supplement research site, puts it plainly: “It is unclear whether or not consumption of Fadogia agrestis is safe at any dosage, so no dosage can be recommended.” What exists instead is label advice. The fadogia products sold to Australians suggest:

• Underground Labs: one 600 mg capsule of 10:1 stem extract once a day.
• Emrald Labs: one 500 mg capsule of 10:1 extract a day, with a meal if your stomach is sensitive.
• AlphaMens Lab: two 500 mg capsules, so 1,000 mg a day, after meals or around a workout.
• Double Wood (sold by Supps247): one 300 mg capsule a day to start, two capsules (600 mg) after a week if you want, and no more than three (900 mg).

So the market range runs from 300 to 1,000 mg a day, and 600 mg is the figure you will see most. It is a label habit. No trial chose it or tested it.

Where the 600 mg Figure Comes From

Most Australians first heard of fadogia from Andrew Huberman’s podcast. In his episode on supplementation he said that “when taken at dosages of 600 milligrams per day, many people, not all, report elevated levels of libido”. He suggested cycling it: “Some people need to cycle it eight weeks on, two weeks off. Other people opt for 12 weeks on, a month off.” In the same episode he warned that “Fadogia agrestis can be toxic to testicular cells and perhaps other cells when taken at very high dosages”.

Those are self-reports and one person’s view. They are useful for knowing where the common dose came from, but they are not trial data.

What the Research Actually Says About Fadogia Dosing

Almost all of the dose research on fadogia comes from one team at the University of Ilorin in Nigeria, led by Musa Yakubu. They gave male rats a water extract of the stem by mouth at 18, 50 and 100 mg per kg of body weight each day.

Fadogia Agrestis Dosage Quick Reference

Here is every study we could find that gave fadogia agrestis at a stated dose and measured what happened.

The 2009 authors read their results as a sign that the extract compromised the cell membranes of the liver and kidney. The 2008 authors wrote that the testicular changes “may adversely affect the functional capacities of the testes”, and that the partial recovery at the lowest dose suggested no permanent harm at that dose.

What Those Rat Doses Mean for a Person

You can’t turn a rat dose into a human dose by body weight alone. The standard method, set out in a 2016 practice guide by Nair and Jacob, adjusts for body surface area: divide the rat dose in mg per kg by 6.2 to get a human equivalent per kg. For an 80 kg adult, that works out to:

• 18 mg per kg in rats: about 232 mg a day.
• 50 mg per kg in rats: about 645 mg a day.
• 100 mg per kg in rats: about 1,290 mg a day.

Two things follow. First, the 600 mg a day that labels and podcasts use sits close to the human equivalent of the middle rat dose, and that dose changed testicular markers after 28 days. Second, the conversion only matches the numbers on paper. The rats got a water extract made in a lab, while capsules hold commercial 10:1 extracts of unknown strength next to it, so none of these figures is a dose anyone has tested in people.

The same guide describes how drug developers pick a first dose for a human trial: they start from the highest animal dose with no adverse effect and divide its human equivalent by a further safety factor of 10. Fadogia has no such dose in the rat data, because changes appeared at the lowest dose tested.

What Hasn’t Been Shown

• No human trial has tested fadogia at any dose, for testosterone or anything else.
• No study has compared doses for effect in people, so there is no evidence that 1,000 mg does more than 600 mg or 300 mg.
• No study has tested cycling. The eight-week and 12-week cycles come from self-experiment and habit.
• No study has tested fadogia combined with tongkat ali.
• The testosterone rise in rats does not carry over to people until a human study shows it does.

For a longer look at the claims made about the herb, read our breakdown of what the fadogia research actually shows.

Fadogia Doses on Australian Labels Compared

This table lists what a serve of each product gives you, the label directions and the cost per day at the label serve. Our in-stock pick sits first. It contains no fadogia, and we say why we suggest it below the table.

Prices as of Sep 2026, from each seller’s product page. Cost per day is at the label serve. Eternal Elixir makes Tongkat Ali 200:1 Extract 2000mg, the first row, and it is our pick for the same goal.

Add Tongkat Ali 200:1 to cart · $39.99

Who each suits. Our Tongkat Ali 200:1 suits men who want testosterone support from a herb with human trials, and it doesn’t suit anyone set on fadogia itself. Underground Labs suits people who want the common 600 mg dose in one capsule, and its 135-capsule size has the lowest cost per day here. Emrald Labs has the lowest single dose in the table, 500 mg, which fits the cautious approach. AlphaMens Lab has the highest label dose, 1,000 mg a day, which is more than the human equivalent of the middle rat dose and has no human data behind it. We compare more brands in our guide to the best fadogia agrestis supplements in Australia.

When to Take Fadogia for Best Results

No study has tested fadogia timing, so “best” here means easiest to stick with and gentlest on the stomach. The labels differ. Double Wood says with or without food. Emrald Labs says any time of day or night, with a meal if your stomach is sensitive. AlphaMens Lab says after meals or around a workout.

A simple routine is one capsule with breakfast, at the same time each day. Food doesn’t have any proven effect on absorption, but it makes a daily habit easier and suits sensitive stomachs. If you split a larger dose, take the second capsule with lunch.

If you also take Tongkat Ali, the directions don’t match. Our Tongkat Ali 200:1 label says three capsules on an empty stomach, so take it first thing and the fadogia with breakfast. Our Tongkat Ali dosage guide covers its timing and the doses used in each trial.

How Long to Take Fadogia and How to Cycle It

Nobody has tested a fadogia cycle in people. The longest study in any animal ran 28 days and found testicular changes at every dose. After 10 days off, the rats recovered on some measures, mainly at the lowest dose. Examine reads the same data as “a possible cytotoxic effect that can manifest after around a month”.

The cycles people use are longer than anything studied: Huberman’s eight weeks on and two weeks off, or 12 weeks on and a month off. The Elite Supps magazine describes cycling as “community practice and label guidance, not clinical consensus”, and AlphaMens Lab’s own FAQ says there is no well-established cycling protocol supported by human research.

The most cautious reading of the rat data is short runs, no longer than the 28 days that have been studied, at the lowest label dose, with a break before you start again. If you choose a longer cycle, you are going past the data, and a check-in with your doctor, including blood tests they think are sensible, is the sensible safeguard.

Don’t expect a timeline. The week-by-week results you see online are anecdotes. The rats’ testosterone rose within 5 days, but a rat result doesn’t tell you what will happen in a person or when.

Side Effects, Risks and Who Should Avoid Fadogia

There is no human safety data on fadogia at any dose. What we know comes from rats: changes in testicular function markers after 28 days at every dose, and liver and kidney enzyme changes over the same period. Those findings are the main reason to keep the dose low and the runs short.

Do not take fadogia agrestis if you are:

• under 18
• pregnant or breastfeeding
• a woman, since there is no data in women and the products are formulated for men
• living with a liver or kidney condition, given the rat findings

Talk to your doctor before you start if you take any prescription medicine, use testosterone or other hormone therapy, or are trying to conceive, given the testicular findings in rats. Stop and see your doctor if you notice anything unusual while taking it.

If any of these apply to you, Tongkat Ali has far more human safety data, though it has its own cautions, covered in the next section. Our natural testosterone protocol for men over 35 covers the sleep, training and diet steps that come before any supplement.

Choosing a Quality Fadogia Supplement in Australia

Label accuracy is a real problem with this herb. In 2019, researchers at the University of Mississippi’s National Center for Natural Products Research tested 17 dietary supplements that claimed to contain fadogia agrestis. Twelve contained the plant’s phenolic marker compounds, at 0.3 to 2.7 mg per daily dose. In the other five, the marker compounds were not detected at all.

If you buy fadogia, check four things:

• The plant part and ratio. The rat studies used the stem, so look for a label that names stem extract and states the extract ratio.
• Published identity testing. Given the 2019 results, a brand that shows batch test results for identity is worth paying for.
• A dose you can keep low. A 300 or 500 mg capsule lets you start at the bottom of the range. A two-capsule 1,000 mg serve doesn’t.
• Enough capsules for your planned run. At one capsule a day, 28 days takes 28 capsules, so a 45 or 60-capsule bottle covers a run and leaves spare.

Taking Fadogia With Tongkat Ali

Most fadogia is sold or taken alongside tongkat ali (Eurycoma longifolia), a root from Southeast Asia. No trial has tested the two together, so any benefit claimed for the pair is a guess. Of the two, tongkat ali is the one with human trials:

• Testosterone in older men. 105 men aged 50 to 70, whose testosterone was below 300 ng/dL at the start, took 100 mg or 200 mg a day of a standardised water extract (Physta) or a placebo for 12 weeks. Total testosterone rose more than on placebo at week 12 on 100 mg, and from week 4 on 200 mg. Free testosterone did not differ between groups. The extract’s maker funded the study and two authors worked for it.
• Stress hormones. 63 moderately stressed adults, 32 men and 31 women, took 200 mg of the same extract or a placebo for 4 weeks. In the tongkat ali group, salivary cortisol fell by 16% and salivary testosterone rose by 37% compared with placebo.
• Pooled evidence. A 2022 review of nine studies, five of them randomised trials pooled in a meta-analysis, found a significant rise in total testosterone in men taking tongkat ali.

Eternal Elixir doesn’t currently stock fadogia, and our Tongkat Ali + Fadogia capsules are sold out. For the tongkat ali side of the same goal, our in-stock pick is below.

Our In-Stock Pick for the Same Goal: Tongkat Ali 200:1

Eternal Elixir Tongkat Ali 200:1 Extract 2000mg gives 2,000 mg of a 200:1 root extract per three-capsule serve, or about 667 mg a capsule. That is ten times the weight of the 200 mg Physta dose in the trials, but the extracts are made differently, and our label gives an extraction ratio rather than a eurycomanone percentage, so the milligram figures can’t be compared directly. No trial has tested our exact extract.

Who it suits: men who want testosterone support alongside training from a herb with human trials, at $1.33 a serve. Who it doesn’t suit: anyone who wants fadogia specifically, anyone under 18, pregnant or breastfeeding, and anyone taking propranolol or other regular prescription medicine without their doctor’s advice, because in a study of 14 healthy young men a 200 mg dose of tongkat ali cut the amount of propranolol absorbed by 29%.

• What’s in the bottle: Eurycoma longifolia root extract 200:1, 2,000 mg per serve, with rice flour and a cellulose capsule, according to the product page.
• How to take it: three capsules a day on an empty stomach. A bottle of 90 capsules lasts 30 days.
• Price: $39.99 a bottle, or $1.33 a serve. Two bottles save 10%, three save 15% and five save 20%, with free shipping over $100.
• Dispatch: orders ship from Sydney within 24 hours, with a 30-day money-back guarantee and Afterpay available.

Add Tongkat Ali 200:1 to cart · $39.99

To see how it compares with other brands, read our guide to the best Tongkat Ali supplements in Australia, or browse the full Eternal Elixir range.

Fadogia Agrestis Dosage FAQ

What is the recommended fadogia agrestis dosage per day?

There isn’t a tested one. Labels on sale in Australia suggest 300 to 1,000 mg a day, most often one 600 mg capsule, and no trial in people has tested any of these doses. If you take it, start at the lowest label dose and don’t go past the label maximum.

What dose of fadogia does Andrew Huberman talk about?

In his supplementation episode he said that at 600 mg a day “many people, not all, report elevated levels of libido”, and he described cycles of eight weeks on and two off, or 12 weeks on and a month off. He also warned that fadogia can be toxic to testicular cells at very high doses. None of this comes from a human trial.

Should I take fadogia on an empty stomach?

You don’t need to. No study has tested fadogia with or without food, and the labels differ. Taking it with breakfast is the simpler choice and is easier on a sensitive stomach, which is what the Emrald Labs label suggests.

Can you take fadogia and tongkat ali at the same time?

People often do, but no trial has tested the combination, so its safety and effect together are unknown. Tongkat ali on its own has placebo-controlled trials in men. Our Tongkat Ali + Fadogia capsules are sold out, so our in-stock pick for the tongkat ali side is Eternal Elixir Tongkat Ali 200:1 Extract 2000mg, three capsules on an empty stomach, $1.33 a serve.

Add Tongkat Ali 200:1 to cart · $39.99

How long does fadogia take to work?

No one knows in people, because no human study exists. In rats, blood testosterone rose within 5 days, but rat results don’t tell you what will happen in a person. The week-by-week timelines posted online are anecdotes. For a herb with human timelines, see how long tongkat ali takes to work.

Is fadogia agrestis safe for long-term use?

That hasn’t been shown. There are no human safety studies, and the longest rat studies, at 28 days, found testicular changes at every dose and liver and kidney enzyme changes. The cautious approach is short runs at the lowest label dose, with breaks, and a talk with your doctor if you plan to use it for longer.

Does Eternal Elixir sell fadogia agrestis?

Not at the moment. Our Tongkat Ali + Fadogia capsules are sold out and we don’t stock fadogia on its own. Our in-stock pick for the same goal is Tongkat Ali 200:1 Extract 2000mg.

What is the best alternative to fadogia in Australia?

Our pick is Eternal Elixir Tongkat Ali 200:1 Extract 2000mg: 2,000 mg per three-capsule serve, 90 capsules a bottle, $1.33 a serve, sent from Sydney within 24 hours. Tongkat ali is the herb most often paired with fadogia, and unlike fadogia it has placebo-controlled trials on testosterone in men. Eternal Elixir makes it, so weigh that when you read our pick.

Shop Tongkat Ali 200:1 · $39.99

The Bottom Line

Fadogia agrestis has no tested dose in people. Labels suggest 300 to 1,000 mg a day, and the common 600 mg sits near the human equivalent of a rat dose that changed testicular markers within 28 days. If you take it, use the lowest label dose, keep runs short and take breaks. We don’t currently stock fadogia. For the tongkat ali side of the same goal, Tongkat Ali 200:1 is our in-stock pick, backed by placebo-controlled trials in men.

More Reading

• Fadogia agrestis supplements sold in Australia, compared
• Fadogia agrestis: science versus hype
• How much tongkat ali to take
• Turkesterone dosage in Australia
• How much shilajit to take

Sources

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8. Elite Supps. Fadogia agrestis explained: evidence, use and safety. elitesupps.com.au
9. Chinnappan SM, George A, Pandey P, Narke G, Choudhary YK. Effect of Eurycoma longifolia standardised aqueous root extract (Physta) on testosterone levels and quality of life in ageing male subjects. Food & Nutrition Research. 2021;65:5647. PubMed 34262417
10. Talbott SM, Talbott JA, George A, Pugh M. Effect of Tongkat Ali on stress hormones and psychological mood state in moderately stressed subjects. Journal of the International Society of Sports Nutrition. 2013;10(1):28. PubMed 23705671
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