Dosage · Supplement

Soy Isoflavones: dosage and how to take it

40–80 mg isoflavones/day.

Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.

The evidence in words

40–80 mg isoflavones/day from soy foods or supplements; give it several weeks.

There are no strict timing conflicts on record for Soy Isoflavones; consistency matters more than the exact hour for most goals.

They bind estrogen receptors (preferentially ER-beta) with weak estrogen-like activity, modulating menopausal symptoms.

A legitimate, modest option for hot flashes — and the 'soy lowers testosterone' fear is not supported. 40–80 mg/day.

As the entry records it, from the studies it summarises. Not a recommendation for you — doses that suit a trial population may not suit you.

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Last revised Jul 10, 2026. A grade is this entry's reading of the evidence, not medical advice.