---
type: Guide
title: "Perimenopause Supplements: What Has Evidence, What Has Only a Mechanism"
description: "KSM-66 ashwagandha moved Menopause Rating Scale scores from 31.4 to 18.5 against a placebo arm that barely moved, in one trial of 60 women over eight weeks (PMID 41561822)."
resource: "https://4well.com/blogs/news/perimenopause-supplements-what-the-evidence-supports"
tags: [hormones, guide, evidence]
timestamp: 2026-09-17T00:00:00Z
---

# Perimenopause Supplements: What Has Evidence, What Has Only a Mechanism

KSM-66 ashwagandha moved Menopause Rating Scale scores from 31.4 to 18.5 against a placebo arm that barely moved, in one trial of 60 women over eight weeks (PMID 41561822). Magnesium helps sleep rather than hot flashes (PMID 40918053); DIM shifts oestrogen metabolite ratios, which is a mechanism and not an outcome.

**One-line answer:** One ingredient has a perimenopause trial behind it; the rest have mechanisms, and the article says which is which.

- Published: 2026-09-20
- Read: https://4well.com/blogs/news/perimenopause-supplements-what-the-evidence-supports
- Every trial in the guide links to its PubMed record; the guide ends with a References list and the same set is exposed as `citation[]` in its BlogPosting markup.
- Trials cited above: [PMID 41561822](https://pubmed.ncbi.nlm.nih.gov/41561822/), [PMID 40918053](https://pubmed.ncbi.nlm.nih.gov/40918053/)

## Related

- Topic: [Hormones](okf-topics-hormones.md)
- Formula discussed on the site for this topic: [DIM Complex 370 mg](okf-products-dim-complex-370-mg.md)

## Source

Summary written from the published guide (reviewed 2026-09-17). Guides are written by the formulation team from human trials; every dose claim links to its PubMed record; mixed and negative results are included; there is no clinician review and nothing on the site is medical advice.