methenamine mandelate/sodium acid phosphate - oral, Uroqid-Acid No.2 (cont.)

HOW TO USE: Take this medication by mouth, usually 4 times daily after meals and at bedtime or exactly as directed by your doctor.Dosage is based on your age, medical condition, and response to treatment. To help keep the urine acid while taking this medication, avoid or eat less of most fruits, milk and milk products, and antacids containing sodium carbonate or bicarbonate.This medication works best when the amount of drug in the urinary tract is kept at a constant level. Therefore, take this drug at evenly spaced intervals. To help you remember, use it at the same times each day.Do not take more or less of this drug than prescribed or stop taking it even for a short time unless directed to do so by your doctor. Skipping or changing your dose without approval from your doctor may cause the bacterial infection to return, make the bacteria more difficult to treat (resistant), or worsen side effects.Tell your doctor if symptoms of a urinary tract infection return (e.g., burning, need to urinate frequently).

SIDE EFFECTS: Nausea, vomiting, diarrhea, abdominal cramps, uncomfortable urination, and loss of appetite may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.Tell your doctor immediately if any of these unlikely but serious side effects occur: mouth sores, headache, shortness of breath, ringing in the ears, muscle cramps, body swelling.Tell your doctor immediately if any of these rare but very serious side effects occur: bone/joint pain, dizziness, confusion, seizures, weakness/heavy feeling in the legs, unusual tiredness or weakness, muscle cramps, numbness/tingling/pain/weakness of hands or feet, numbness or tingling around lips, fast/irregular heartbeat, swelling of feet/lower legs, unusual weight gain, decrease in the amount of urine, unusual thirst.High doses of methenamine (8 grams daily for 3 to 4 weeks) may cause more severe side effects, including bladder pain/irritation, frequent urination, bloody/pink urine). Tell your doctor immediately if you notice any of these symptoms.A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Pill Finder Tool

Need help identifying pills and medications?
Use the pill identifier tool on RxList.

Back to Medications Index



Get the Latest health and medical information delivered direct to your inbox!