Key Takeaways

  • Fadogia Agrestis increases luteinizing hormone and testosterone at 600 mg daily, but animal research documents testicular cell toxicity at high dosages.
  • Anyone taking Fadogia must cycle off on an 8-weeks-on, 2-weeks-off or 12-weeks-on, 4-weeks-off schedule to prevent tissue damage.
  • Tongkat Ali frees up bound testosterone by lowering sex hormone-binding globulin (SHBG) at 200 to 600 mg daily without requiring cycling.
  • Women experience shifting responses across menstrual phases, requiring isolated single-ingredient tests rather than commercial hormone blends.
  • Huberman organizes these protocols into the Herbal Hormone Augmentation and Cycling Rules.

The Herbal Hormone Augmentation and Cycling Rules

Many founders treat over-the-counter supplements like harmless vitamins. Huberman points out that botanical compounds alter active endocrine pathways. Taking them requires the exact same discipline you would bring to pharmaceutical compounds.

Rule 1: Fadogia Agrestis Dosing and Cycling

Take a maximum of 600 mg per day to stimulate luteinizing hormone. To avoid cellular toxicity, cycle strictly: either 8 weeks on followed by 2 weeks off, or 12 weeks on followed by 4 weeks off. Never exceed labeled dosages.

Rule 2: Tongkat Ali Dosage and Continuous Use

Take 200 to 600 mg per day to lower sex hormone-binding globulin (SHBG) and increase bioavailable free testosterone. Cycling is not required; evaluate efficacy with hormone blood panels after 8 to 12 weeks of sustained use.

Rule 3: Menstrual Phase Accounting

Women must utilize single-ingredient control to adjust or discontinue hormone-influencing compounds between the follicular and luteal phases, as shifting endogenous hormones can reverse a supplement's biological effect.

When This Works (and When It Doesn't)

These rules work when you have already stabilized your baseline behaviors: eight hours of dark sleep, resistance training, adequate dietary cholesterol, and sunlight exposure. If your sleep is erratic and you run on quadruple espressos, botanical compounds will not fix your low testosterone. You cannot supplement your way out of endocrine burnout caused by chronic sleep deprivation.

Fadogia Agrestis stimulates luteinizing hormone, which prompts the testes to make more testosterone. As Huberman notes, “Fadogia Agrestis, this is an herb that I've talked about before on the podcast that when taken at dosages of 600 mg per day, many people, not all, report elevated levels of libido, elevated sperm production, elevated testosterone, in some cases elevated estrogen.” But more is not better. He adds, “First of all, there's a fairly extensive literature on the fact that Fadogia Agrestis can be toxic to testicular cells and perhaps other cells when taken at very high dosages.” That is why he insists: “Stay within the recommended dosage ranges. You can go lower, but certainly don't go higher.”

Tongkat Ali acts differently. Instead of driving up total production through luteinizing hormone, it lowers sex hormone-binding globulin. This frees up the testosterone already circulating in your blood. As Huberman explains, “Tongkat Ali can be beneficial both for men and for women in dosages anywhere from 200 mg to 600 mg per day. To my knowledge, Tongkat Ali does not need to be cycled.” It works gradually through neural and endocrine mechanisms, meaning you should evaluate it with blood panels across months, not days.

What to Do With This

Say you are a 27-year-old founder feeling sluggish during 12-hour build sprints. You suspect your testosterone is low, and your desk drawer is full of proprietary supplement blends.

Throw out the multi-ingredient kitchen-sink formulas. You cannot pinpoint what works or what causes side effects when six herbs are packed into one proprietary capsule. Schedule a comprehensive hormone panel tomorrow morning before 9:00 AM to test your baseline total testosterone, free testosterone, and SHBG.

If your total testosterone is normal but your free testosterone is pinned to the floor by high SHBG, order a pure, single-ingredient Tongkat Ali supplement. Start at 200 to 400 mg daily each morning. Do not touch Fadogia Agrestis unless your total production is lagging, and if you do start it at 600 mg daily, open your digital calendar right now. Add a hard stop at week 8 for a mandatory 2-week washout. If you fail to schedule the off-cycle, you are risking cellular damage for a short-term productivity lift.