Hyoscyamine, methenamine, methylene blue, and sodium biphosphate

Name: Hyoscyamine, methenamine, methylene blue, and sodium biphosphate

How should I take this medicine?

Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended.

Do not crush, chew, or break an enteric coated pill. Swallow it whole. The pill has a special coating to protect your stomach. Breaking the pill will damage this coating.

Drink plenty of liquids while you are taking this medication.

If you have an eye exam and your pupils are dilated with eye drops, tell the eye doctor ahead of time that you are using hyoscyamine, methenamine, methylene blue, and sodium biphosphate.

Store at room temperature away from moisture and heat. Keep the bottle tightly closed when not in use.

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Hyoscyamine, methenamine, methylene blue, and sodium biphosphate dosing information

Usual Adult Dose for Urinary Tract Infection:

Hyoscyamine/methenamine/m-blue/sodium biphosphate 0.12 mg-81.6 mg-10.8 mg-40.8 mg oral tablet:
1 tablet orally four times daily.

What other drugs will affect hyoscyamine, methenamine, methylene blue, and sodium biphosphate?

Many drugs can interact with this medicine. Not all possible interactions are listed here. Also, hyoscyamine can make it harder for your body to absorb other medications you take by mouth. Tell your doctor about all your medications and any you start or stop using, especially:

  • neostigmine or pyridostigmine;

  • bladder or urinary medicines such as darifenacin, fesoterodine, oxybutynin, tolterodine, solifenacin;

  • bronchodilators such as ipratropium or tiotropium;

  • cold or allergy medicine that contains an antihistamine;

  • a diuretic or "water pill";

  • an MAO inhibitor--furazolidone, isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, tranylcypromine;

  • medication to treat excess stomach acid, stomach ulcer, motion sickness, or irritable bowel syndrome;

  • medication to treat gout, kidney stones, or an electrolyte imbalance (such as low levels of potassium);

  • medication to treat symptoms of Alzheimer's disease or Parkinson's disease;

  • narcotic pain or cough medication--codeine, fentanyl, hydrocodone, hydromorphone, methadone, morphine, oxycodone, propoxyphene, and others; or

  • sulfa drugs.

This list is not complete and many other drugs can interact with hyoscyamine, methenamine, methylene blue, and sodium biphosphate. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Give a list of all your medicines to any healthcare provider who treats you.

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