Men's Vitality & Performance
Chrysin: Benefits, Side Effects and the Testosterone Question
Chrysin is a plant flavonoid that shows up in many men's formulas. Lab studies are interesting; human studies are limited. Here is the full, honest picture.
By The VitoAid Wellness Team · September 25, 2026 · 6 min read
In this guide
Chrysin is a natural flavonoid found in passionflower, chamomile and honey. It became popular in men's supplements because lab research suggested it might slow the enzyme that turns testosterone into estrogen. Here is what that means in real life.
What is chrysin?
Flavonoids are plant compounds with antioxidant activity. Chrysin is one of them. It is included in formulas like Testo BoostX as a supporting ingredient alongside better-studied minerals and herbs.
Does chrysin increase testosterone?
In test tubes, chrysin can inhibit aromatase, the enzyme that converts testosterone to estrogen. In people, the body absorbs very little chrysin, and the few human studies did not show a meaningful testosterone increase from chrysin alone. So it is best seen as a small supporting part of a formula, not the main driver.
| Claim | What the evidence says |
|---|---|
| Blocks estrogen conversion | Shown in lab studies; weak in humans due to low absorption |
| Raises testosterone | Not shown in human studies on its own |
| Antioxidant activity | Yes, like many plant flavonoids |
Chrysin benefits you can reasonably expect
- Antioxidant support as part of a broader formula.
- A complementary role alongside zinc, magnesium and tongkat ali.
- No proven standalone effect on hormones — anyone promising that is overselling.
Side effects and who should skip this
- Side effects at typical supplement amounts appear uncommon; stomach upset has been reported.
- Anyone with a hormone-sensitive condition should ask a doctor first.
- It may interact with some medications processed by the liver; check with your pharmacist.
- Not for pregnant or breastfeeding women or anyone under 18.
Cost per day
Testo BoostX includes chrysin within a nine-ingredient formula for about $1.30 per day (1 bottle), $1.17 per day (3 bottles) or $1.00 per day (6 bottles).
Frequently asked questions
Does chrysin increase testosterone?
Lab studies suggested it could slow estrogen conversion, but human studies have not shown a meaningful testosterone increase from chrysin alone, largely because it is poorly absorbed.
What is chrysin used for?
It is a plant flavonoid with antioxidant activity, commonly included in men's formulas as a supporting ingredient.
Is chrysin safe?
It appears well tolerated at typical supplement amounts. People with hormone-sensitive conditions or on liver-processed medications should check with a doctor or pharmacist.
Where does chrysin come from?
It occurs naturally in passionflower, chamomile, honey and propolis.
