Tamoxifen Oral tablet drug summary. Find medication information including related drug classes, side effects, patient statistics and answers to frequently asked questions. Visit cvs.com for more details. With tamoxifen, I wonder if it can be compounded since it has been around a long time. With my sensitivities I often use a compounding pharmacy. With my sensitivities I often use a compounding pharmacy. Tamoxifen is used for hormone-dependent types of breast cancer. It works by blocking the effect of estrogen in the body and thus stopping the growth of cancer cells that possess the estrogen receptors. Tamoxifen citrate tablets USP, a nonsteroidal antiestrogen, are for oral administration. Each film coated tablet contains Tamoxifen citrate15.2 mg or 30.4 mg equivalent to Tamoxifen 10 mg or 20 mg respectively. Male Breast Cancer: Tamoxifen is well tolerated in males with breast cancer. Reports from the literature and case reports suggest that the safety profile of tamoxifen in males is similar to that seen in women. Company Overview. Watson Laboratories, Inc. manufactures pharmaceutical drugs. The company was incorporated in 1992 and is based in Corona, California. Tamoxifen may decrease or prevent the spread of cancer cells to other parts of the body. Ask your doctor if you have any questions about why this medicine has been prescribed for you. DUBLIN, July 1, 2014 /PRNewswire/ -- Actavis plc (NYSE: ACT) today announced that it has completed the acquisition of Forest Laboratories, Inc. (NYSE: FRX) in a cash and equity transaction currently valued at approximately $28 billion. Came home from Rite-Aid this evening after filling my “lovely” Tamoxifen script to find it changed from Teva to Watson Labs…curious to see what may transpire?!! Only my third month though, not even sure I have actually begun to experience the height of all of the side effects. Professional guide for Tamoxifen. Includes: pharmacology, pharmacokinetics, contraindications, interactions, adverse reactions and more.