Generic Biaxin is in a group of drugs called macrolide antibiotics. It is used to treat many different types of bacterial infections affecting the skin and respiratory system. It is also used together with other medicines to treat stomach ulcers caused by Helicobacter pylori.
Generic Neoral is used for preventing the rejection of organ transplants (kidney, liver, and heart). This medicine is also used to treat psoriasis and rheumatoid arthritis in certain patients.
Generic Zyloprim is used in the treatment of many symptoms of gout, including acute attacks, tophi (collection of uric acid crystals in the tissues, especially around joints), joint destruction, and uric acid stones. Allopurinol works by reducing uric acid production in the body, thus preventing crystals from forming.