The tablets are 5mg each and your dose will be dependent on what you are using it to treat, to be calculated by your doctor. For heavy bleeding or other problems with your period, you will usually take 1 tablet 3 times a day for 10 days. For premenstrual tension, you will usually take 1 tablet a day for 10 days. For endometriosis, you will usually take 1 tablet 3 times a day for at least 6 months. For breast cancer, you will usually take 8 tablets a day (but it could be up to 12 a day). For delaying your period, you will usually take 1 tablet 3 times a day, starting 3 days before your period is due to start.