Type of medication	Examples
Antibiotics	Ampicillin, amoxicillin, ceftriaxone (Rocephin), furans (e.g., nitrofurantoin), pyridines, quinolones, sulfonamides (e.g., sulfamethoxazole)
Carbonic anhydrase inhibitors	Acetazolamide, topiramate (Topamax)
Diuretics	Furosemide (Lasix), triamterene (Dyrenium)
Ephedra alkaloids (banned in the United States)	Herbal products used as stimulants and appetite suppressants
Laxatives, especially if abused (specific to ammonium urate stones)	Overuse of any laxative resulting in electrolyte losses
Potassium channel blockers	Amiodarone, dalfampridine (Ampyra; multiple sclerosis therapy), sotalol (Betapace)
Reverse transcriptase inhibitors and protease inhibitors	Efavirenz (Sustiva), indinavir (Crixivan), nelfinavir (Viracept), raltegravir (Isentress)
Sulfonylureas	Therapies for type 2 diabetes mellitus
Others	Aluminum magnesium hydroxide, ascorbic acid, calcium, dexamethasone, guaifenesin, phenytoin (Dilantin), vitamin D