Please read my previous posts! and try Lamberts MAGNESIUM! Letrozole is amazing but the side effects for me was unbearable joint pain. Magnesium is a muscle relaxant and a brilliant supplement!!! Google "drAxe magnnesium" and download "Vitamin k and the calcium paradox" on amazon. As I have explained in previous posts some supplements must not be taken together e.g. calcium and Magnesium as they compete for absorption so take at least 2hrs apart. Magnesium was a miracle for me!!! (I take calcium D3, b12, cod liver oil, vitC, K2 and magnesium, a good combination) My GP gives me magnesium on prescription after I educated him on supplements, GPs are taught very little about supplements in their training, when I mentioned it to my oncologist she agreed magnesium was very good..then why didn't she tell me! I had to educate myself! You have nothing to lose by trying this. Good luck!
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