Doctors give unbiased, trusted information on whether Furadantin can cause or treat Allergies: Dr. Lutwick on nitrofurantoin sulfa allergy: It is certainly possible. Hey KikiHart, No, your not out of luck! I'm allergic to the 3 medications that are used to treat UTI's (macrobid, cipro, and sulfa). My PCP prescribed me Monurol (Fosfomycin Tromethamine). The Green Pages. The Green Pages gives information about the medicines mentioned in this book. For general information about medicines, and before giving a medicine, be sure to read the chapter called Use of Medicines in Women’s Health. Suspension. 125 mg/5 ml; 250 mg/5 ml ($$-$$$) Pediatric (3 months to 12 years) NOTE: Pediatric dosing is for suspension only. Suspension and tablet are not bioequivalent on a mg-to-mg basis. Unfortunately we are not able to help you due to the length of time your symptoms have been present. Any person with a possible urinary tract infection greater than 7 days in length should be seen by a health care professional to obtain diagnosis and treatment. I am allergic to sulfur antibotics so my Doctor prescribed Nitrofurantoin for a UTI. Everyone should read the prescriptions that will interfer or have a reaction to this drug. Can I take Keflex if I’m allergic to penicillin? I have not seen a doctor. I’m not taking anything right now - Answered by a verified Doctor Nitrofurantoin antibiotic is very often used to treat urinary tract infections. Allergic reactions to this is rather uncommon. However, when it happens the skin reactions could show up as itching, swelling of skin, eczema, and even serious conditions such as stevens-johnson syndrome. Other symptoms affecting gastrointestinal , urinary, blood. Bactrim (sulfamethoxazole and trimethoprim) DS is a combination of two antibiotics used to treat urinary tract infections, acute otitis media, bronchitis, Shigellosis, Pneumocystis pneumonia, traveler's diarrhea, methicillin-resistant Staphylococcus aureus , and other bacterial infections susceptible to this antibiotic. Cipro (ciprofloxacin) is a brand-name prescription antibiotic medication. It’s used to treat infections caused by bacteria. Cipro belongs to a class of antibiotics called fluoroquinolones.