Soy isoflavones brand recommendation

[Sara1003]

Can anyone recommend a brand of Soy isoflavones to aid fertility/ ovulation?
Confused by all on the market, whether it should be mixed with vitamin B6 and what % extract.

Hi.. I take this https://amzn.eu/d/b5CYiWq

its 40mg, no vitamin b, just soy.. and I take 160mg so 4 capsules..

Thanks so much, really helpful!