i am doing a 4 week cycle of 40/40/20/20. The bottle is Tamox 50mL 20mg/mL .. so 1 bottle should be enough.. I hope my math is right,.,.
....(40 x 14(days)) + (20 x 14) = 840.. 4 week cycle
50(bottle) x 20(mg) = 1000... so in other words this bottle should get me 4 weeks....