I've been on tamoxifen for almost a year. My first 2 packs (60 days each) were Genox brand. Then I was supplied with Apo-Tamoxifen and within a few weeks felt that the side effects (feeling agitated, vaginally dryness) were worse so next time I asked for Genox again and it all settled down. My chemist now makes sure he always has a pack of Genox on the shelf for me. They are both "generic" brands.
I'd recommend to just start on what your chemist has in stock, see how your body reacts and change if it seems no good.
