Vitex (chasteberry)
For luteal support & prolactin
BModerate evidence
The most-studied herbal supplement for cycle health. A double-blind 1993 RCT showed 20mg/day for 3 months normalized shortened luteal phases and corrected progesterone deficits in women with latent hyperprolactinemia.
A systematic review of 12 RCTs found Vitex superior to placebo for PMS (7 of 8 trials positive) and comparable to bromocriptine for mild prolactin elevation, with fewer side effects.
Caution: May interact with dopamine-related medications. Not recommended during pregnancy or with IVF medications. Best used under provider guidance when luteal phase deficiency is confirmed by charting.
- Dose
- 20 mg/day standardized extract
- Duration
- 3 months minimum
- Best for
- Luteal phase deficiency, mild hyperprolactinemia, PMS