Generic Name: METHENAMINE/METH BLUE/SALICYLATE/ACIDIFIER/HYOSCYAMINE - ORAL
Pronounced: (meth-EN-a-meen/METH-i-leen bloo/sa-LIS-i-late/,Acidifier/HYE-oh-SYE-a-meen)

Phosphasal Oral Uses

This medication is used to relieve the discomfort, pain, frequent urge to urinate, and cramps/spasms of the urinary tract caused by an infection or a medical procedure. Methenamine is an antibiotic. Methylene blue is an antiseptic and is related to a group of drugs called monoamine oxidase inhibitors (MAO inhibitors). Both methenamine and methylene blue help to prevent the growth of bacteria in the urine. Salicylate, which is related to aspirin, is a pain reliever. This product also contains an ingredient (such as sodium phosphate, benzoic acid) to make the urine more acidic, which helps methenamine work better. Hyoscyamine is an antispasmodic drug that relaxes the muscles of the urinary tract to relieve cramps/spasms.

This product should not be used to treat a urinary tract infection. If you have a bacterial infection, another antibiotic is usually prescribed to treat it. Consult your doctor for more details.

This medication is not recommended for children younger than 6 years because they are more sensitive to the side effects.

How To Use Phosphasal Oral

Take this medication by mouth as directed by your doctor, usually 4 times a day. Take each dose with a full glass of water (8 ounces/240 milliliters). Do not lie down for 10 minutes after taking this medication. Drink plenty of fluids while you are being treated with this medication unless otherwise directed by your doctor. If stomach upset occurs with this medication, you may take it with food.

The dosage is based on your medical condition, age, and response to treatment. Do not increase your dose or use this drug more often or for longer than prescribed. Your condition will not improve any faster, and your risk of side effects will increase.

Antacids may decrease the absorption and the effectiveness of this product. Therefore, if you are also taking antacids, take this product at least 1 hour before antacids.

Take this medication regularly at evenly spaced intervals to get the most benefit from it. To help you remember, take it at the same times each day.

MAO inhibitors (such as methylene blue) have special food interactions. To prevent a very serious high blood pressure reaction, it is very important that you follow a special diet recommended by your doctor or dietician to limit your intake of tyramine while you are taking this medicine. Avoid foods and beverages that are high in tyramine, including aged cheeses, dried/aged meats and sausages (such as salami, liverwurst), preserved fish (such as pickled herring), products that contain large amounts of yeast (such as bouillon cubes, powdered soup/gravy, homemade or sourdough bread), fermented foods (such as sauerkraut, kim chee), most soybean products (such as soy sauce, tofu), broad/fava beans, red wine, sherry, tap beers, and vermouth. Consult your doctor or dietician for more details and a complete list of other foods that contain tyramine which you should limit or avoid.

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