Allopurinol may also be used for purposes other than those listed in this medication guide. Before taking allopurinol, tell your doctor if you have kidney or liver disease. You may need a lower dose of allopurinol or special monitoring during your therapy. This means that it is not known whether allopurinol will harm an unborn baby. Do not take allopurinol without first talking to your doctor if you are pregnant.
Allopurinol passes into breast milk.
Do not take allopurinol without first talking to your doctor if you are breast-feeding a baby. Take allopurinol exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you. Take each dose with a full glass of water. Take allopurinol with food or milk to lessen stomach upset.