phenazopyridine + hyoscyamine

This drug is a **combination** of phenazopyridine and hyoscyamine, typically used to relieve symptoms associated with irritation of the urinary tract, such as pain, burning, urgent or frequent urination, and bladder spasms. **Phenazopyridine** acts as a urinary tract analgesic, providing local pain relief to the lining of the urinary tract; it does not treat the underlying cause of infection but soothes discomfort[3][4][1]. **Hyoscyamine** is an anticholinergic/antispasmodic that inhibits muscarinic acetylcholine receptors, thereby reducing smooth muscle spasms in the bladder and urinary tract and decreasing symptoms like urgency and cramping[5][1]. This combination does not have unique branded formulations commonly in use, but related combinations with similar ingredients have existed (often also containing barbiturates).