Hello
I've tried soya isoflavones a few months with mixed success.
I have these ones from Amazon
SOYA Isoflavones 80% Extract 120 Capsules, 3rd Party Lab Tested, High Strength Supplement https://amzn.eu/d/4HU60Wl
My cycles were completely irregular between 25-39 days with the main issue being the shortish luteal phase however I wanted to ovulate before day 26 to give myself more chances throughout the year.
I was usually ovulating around day 19 I think and twice brought it forward to day 15, one month no difference made. I was talking them say 3-7.
I took 1, 1, 2, 2 then 3 then stopped.
One month I'm convinced they made me ill with D&V to the extent I was convinced I must have a soy allergy and haven't taken them since.
My luteal phase has increased to approx 13 days with minimal spotting before my period. I also take pregnacare conception, 1000mg of vitamin c, 100mg of vit b complex + added coq10 600mg this month. This has been the most successful combination for me.
I also take Angus Castus 40mg twice per day in the luteal phase and has helped massively with PMS.
However! Having seen a private Gynaecologist who suggested clomiphene on days 1-5 I'm going to try the isoflavones again as he won't start me on them til I've had a transvaginal ultrasound+follow up appointment which will take a couple of weeks to happen.
I'm on day 1 of my cycle and also started an anti depressant today clitalopram of which the side effects included nausea and vomiting so just gonna chuck the isoflavones in to....might lose that stone the Gynaecologist suggested!😬