Thank you all again so much for being so supportive. I'm 10 years post menopause, self-employed as an indexer, and, apart from chocolate, have a healthy-ish lifestyle with daily walks, vegetarian diet, no alcohol. My depression and anxiety have I think always been in the background but have become much worse since the menopause. I worry because my mother had severe depression and took medication all her adult life.
I do agree that supplements probably aren't the answer, though the attraction is that they seem like a quick fix.
I won't rule anything out at all, and thank you all again.