Urolene Blue

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have a serious side effect such as:

• severe nausea, vomiting, or stomach pain;
• pain in your chest or behind your breast bone;
• pale or blue skin;
• high fever, fast or pounding heartbeats, trouble breathing; or
• confusion, feeling like you might pass out.

Less serious side effects may include:

• mild bladder irritation;
• mild nausea, vomiting, diarrhea, upset stomach;
• dizziness;
• headache; or
• increased sweating.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Follow your doctor's instructions about any restrictions on food, beverages, or activity.

Tell your doctor about all other medications you use, especially:

• acetazolamide (Diamox);
• antacids;
• sodium bicarbonate; or
• a diuretic (water pill) such as hydrochlorothiazide, HCTZ, Accuretic, Aldactazide, Aldoril, Atacand HCT, Avalide, Capozide, Diovan HCT, Dyazide, HydroDiuril, Hyzaar, Inderide, Lopressor HCT, Lotensin HCT, Maxzide, Moduretic, Vaseretic, Zestoretic, Ziac, and others.

This list is not complete and other drugs may interact with methylene blue. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.