It is very important that your doctor check your progress at regular visits. This medicine may cause blood problems, especially if it is taken for a long time.
If your symptoms do not improve within a few days, or if they become worse, check with your doctor.
Sulfapyridine may cause blood problems. These problems may result in a greater chance of certain infections, slow healing, and bleeding of the gums. Therefore, you should be careful when using regular toothbrushes, dental floss, and toothpicks. Dental work should be delayed until your blood counts have returned to normal. Check with your medical doctor or dentist if you have any questions about proper oral hygiene (mouth care) during treatment.
Sulfapyridine may cause your skin to be more sensitive to sunlight than it is normally. Exposure to sunlight, even for brief periods of time, may cause a skin rash, itching, redness or other discoloration of the skin, or a severe sunburn. When you begin taking this medicine:
Stay out of direct sunlight, especially between the hours of 10:00 A.M. and 3:00 P.M., if possible.
Wear protective clothing, including a hat. Also, wear sunglasses.
Apply a sun block product that has a skin protection factor (SPF) of at least 15. Some patients may require a product with a higher SPF number, especially if they have a fair complexion. If you have any questions about this, check with your health care professional.
Apply a sun block lipstick that has an SPF of at least 15 to protect your lips.
Do not use a sunlamp or tanning bed or booth.
You may still be more sensitive to sunlight or sunlamps for many months after stopping this medicine. If you have a severe reaction from the sun, check with your doctor.
Tell the doctor in charge that you are taking this medicine before you have any medical tests. The results of the bentiromide (e.g., Chymex) test for pancreas function are affected by this medicine.