Nolvadex is a prescription medication containing 10mg of tamoxifen per tablet, packaged in a box of 30 tablets. Manufactured by AstraZeneca, this medication is commonly prescribed for the treatment and prevention of certain types of breast cancer. The active ingredient tamoxifen belongs to a class of drugs known as selective estrogen receptor modulators (SERMs). Each tablet contains 10mg of tamoxifen citrate and comes in a white rectangular box with turquoise and purple branding. The medication should be stored at room temperature away from light and moisture. This is a prescription-only medication that should be taken exactly as prescribed by a healthcare provider.