The weight thing, the microdose, and what do I add.

The one compound with real data in women like us

A 2025 analysis in Obesity pulled 2,542 women from the SURMOUNT tirzepatide trials and staged them pre-, peri- and post-menopause. In the perimenopausal subgroup, weight fell 23% versus 3% on placebo; waist circumference dropped 20 cm versus 5. Across every reproductive stage, 97–98% of women achieved at least a 5% reduction, against about 30% on placebo.

The caveats, always: it's post hoc, the staging was retrospective, and Eli Lilly funded and authored it. It is still randomized data in thousands of women, which is more than every other compound on this site combined.

A separate Mayo Clinic retrospective (120 postmenopausal women) found that women on tirzepatide plus menopausal hormone therapy lost about 35% more than tirzepatide alone. Not randomized — healthier baseline behaviour and better sleep on HRT are live alternative explanations — but interesting.

The microdose question

There is no pharmacological definition of a GLP-1 microdose, no randomized trial of one, and no dose-finding study. What the SURMOUNT and STEP trials do show is that the effect is dose-dependent. So a sub-therapeutic amount should be expected to produce a sub-therapeutic result. That's not an opinion; it's the shape of the curve.

The legal side has moved, too. FDA's enforcement discretion for compounded tirzepatide ended in February–March 2025 and for semaglutide in April–May 2025. 'Personalized dosing' is the exception compounders use to keep selling small amounts, and it's contested.

'I'm already on tirz. What do I add?'

This is the most common real question in every community I read, and there is not one ranking answer to it, because the honest answer is uncomfortable: nothing sold as an add-on has a trial in women like us. Not BPC-157 for 'gut side effects.' Not MOTS-c for 'energy.' Not the GH secretagogues for 'preserving muscle.' Each of those is covered on its own page, and each page says some version of 'nobody has tested this.'

What does have evidence for preserving lean mass during rapid weight loss is boring: protein, resistance training, and not losing it too fast. Bone and muscle loss matters more in a population that's already losing both.

Two things specific to us

GLP-1s slow gastric emptying, which changes how oral estradiol and progesterone are absorbed. If you're on oral HRT, that's a conversation. And the Mounjaro label carries a real warning about oral contraceptives being less effective around dose increases — relevant, because perimenopausal women can still conceive, and not one of the 'best peptides for women' articles I found mentions it. I put the list of questions here.

What we order

The women I know who research the GLP-1 side order from ZestyRat, with the batch COA open, and they read the two sections above first. That's the whole review. I'm not going to add a 'stack' at the bottom of a page that just spent 600 words telling you the stacks are untested.

Questions I actually get

Nothing on this page is medical advice or a recommendation to use anything. The compounds discussed are sold as research materials and are not FDA-approved for the uses people talk about. I read; I don't prescribe. Talk to a clinician who knows your history.