Patients taking sulfonamides such as Bactrim and Septra must be educated to:

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Patients taking sulfonamides are at risk for developing kidney stones due to the medication crystallizing in the urine. Drinking at least 3 quarts of fluid per day will help prevent the formation of kidney stones. Avoiding sunlight is a precaution for patients taking tetracyclines and other photosensitizing medications. Additional methods of birth control may be necessary for patients taking antibiotics that can decrease the effectiveness of hormonal contraceptives, but sulfonamides do not have this effect. Taking the medication with orange juice is unnecessary and may even be detrimental, as it can decrease the absorption of the medication.

Patients Taking Sulfonamides Such as Bactrim and Septra Must Be