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Pyrelle HB Side Effects

Generic Name: butabarbital / hyoscyamine / phenazopyridine

Note: This page contains side effects data for the generic drug butabarbital / hyoscyamine / phenazopyridine. It is possible that some of the dosage forms included below may not apply to the brand name Pyrelle HB.

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.

It is possible that some side effects of Pyrelle HB may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

More about Pyrelle HB (butabarbital / hyoscyamine / phenazopyridine)

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