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Butabarbital / hyoscyamine / phenazopyridine Side Effects

Applies to butabarbital / hyoscyamine / phenazopyridine: tablets

Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Bloated feeling; blurred vision; clumsiness; constipation; decreased sweating; dizziness; drowsiness; dry mouth; enlarged pupils; excessive daytime drowsiness; excitability; headache; lightheadedness; nausea; trouble sleeping; weakness.

Seek medical attention right away if any of these SEVERE side effects occur while taking butabarbital / hyoscyamine / phenazopyridine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); agitation; blue or purple skin color; confusion; decreased urination; disorientation; fainting; fast or irregular heartbeat; hallucinations; loss of consciousness; loss of coordination; mental or mood changes (eg, agitation, unusual behavior changes); shortness of breath; unusual tiredness or weakness; vision changes (eg, trouble focusing eyes); yellowing of the skin or eyes.

Not all side effects for butabarbital / hyoscyamine / phenazopyridine may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.

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