Exemestane vs Femara? Benefits? Weight?

Hi, from what I've read,the Aromatase Inhibitors all act in a similar way by stopping Androgen being converted into Estrogen in post menopausal women. Femara and Arimadex are similar in composition and Aromasin is abit different -weight gain is not listed as a side effect from what I can see.I take Tamoxifen and it hasn't really caused weight gain.However,since stopping Tamoxifen,I've noticed it easier to lose a few kilos whereas I struggled to when on the drug.I have friends on Femara and they haven't put any weight on. I don't know anyone on Aromasin.It's like Robyn says, your metabolism slows done due to menopause rather than the drugs themselves.We probably have to work abit harder at eating healthier and exercising to maintain a steady weight.But that's not such a bad thing! Ask your oncologist to explain why he advises Aromasin instead of Femara - you need to feel confident with his advice and if you are not convinced then ask others eg. your chemist? another oncologist? Good luck, Tonya xx