Phenazopyridine
Brand names: AZO, AZO GESIC, AZO Urinary Pain Relief, AZO Urinary Tract Health, CVS Health Maximum Strength Urinary Pain Relief, CVS Health Urinary Pain Relief, CVS Maximum Strength Urinary Pain Relief, Care One Maximum Strength Urinary Pain Relief, Discount Drug Mart Maximum Strength Urinary Pain Relief, Discount Drugmart Maximum Strength Urinary Pain Relief, Dollar General Maximum Strength Urinary Pain Relief, Equate Maximum Strength Urinary Pain Relief, Family Dollar Maximum Strength Urinary Pain Relief, Family Wellness Maximum Strength Urinary Pain Relief, Good Neighbor Maximum Strength Urinary Pain Relief, Good Neighbor Pharmacy Maximum Strength Urinary Pain Relief, Good Neighbor Pharmacy Urinary Pain Relief, Harris Teeter Maximum Strength Urinary Pain Relief, HealthMart Maximum Strength Urinary Pain Relief, HealthMart Urinary Pain Relief, Kroger Maximum Strength Urinary Pain Relief, Kroger Urinary Pain Relief, LEADER Azo Tabs Urinary Tract Analgesic, LEADER MAXIMUM STRENGHT URINARY PAIN RELIEF, Leader Maximum Strength Urinary Pain Relief, Leader Urinary Pain Relief, Meijer Maximum Strength Urinary Pain Relief, PHENAZOPYRIDINE HYDROCHLORIDE, Phenazo, Phenazopyridine HCl, Phenazopyridine HCl 100mg, Phenazopyridine HCl 200mg, Phenazopyridine Hydrochloride, Phenazopyridine Hydrochloride 97.5mg, Phenazopyridine hydrochloride, Phenazopyridine hydrochloride 95mg, Preferred Maximum Strength Urinary Pain Relief, Preferred Plus Maximum Strength Urinary Pain Relief, Preferred Plus Urinary Pain Relief, Preferred Urinary Pain Relief, Premier Value Maximum Strength Urinary Pain Relief, Pyridium, Quality Choice Maximum Strength Urinary Pain Relief, Quality Choice Urinary Pain Relief, Quality Choice Urinary Pain Relief Maximum Strength, Rite Aid Maximum Strength Urinary Pain Relief, Rite Aid Urinary Pain Relief, Select Brand Maximum Strength Urinary Pain Relief, Signature Care Maximum Strength Urinary Pain Relief, Skopko Urinary Pain Relief, Sunmark Maximum Strength Urinary Pain Relief, Sunmark Urinary Pain Relief, Sunmark Urinary Pain Relief Maximum Strength, TOPCARE MAXIMUM STRENGTH URINARY PAIN RELIEF, TopCare Maximum Strength Urinary Pain Relief, TopCare Urinary Pain Relief, UTI-Pain, Uqora Maximum Strength Urinary Pain Relief, Uricalm, Urinary Pain Relief, Uristat, Uristat Ultra, UristatUTI Relief Pak, Walgreens Maximum Strength Urinary Pain Relief, Walgreens Urinary Pain Relief, Walgreens Urinary Pain Relief Maximum Strength, Wallgreens Maximum Strength Urinary Pain Relief, Walmart Maximum Strength Urinary Pain Relief, WinCo Maximum Strength Urinary Pain Relief
Warnings
No boxed warning. Contraindicated "in patients with renal insufficiency, severe liver disease, severe hepatitis or pyelonephritis of pregnancy." The label also notes phenazopyridine "is reasonably anticipated to be a human carcinogen based on sufficient evidence of carcinogenicity in experimental animals," while noting "inadequate evidence for the carcinogenicity of phenazopyridine hydrochloride in humans."
Contraindications
CONTRAINDICATIONS Phenazopyridine HCl should not be used in patients who have previously exhibited hypersensitivity to it. The use of Phenazopyridine HCl is contraindicated in patients with renal insufficiency.
Overdose
OVERDOSAGE Exceeding the recommended dose in patients with good renal function or administering the usual dose to patients with impaired renal function (common in elderly patients) may lead to increased serum levels and toxic reactions. Methemoglobinemia generally follows a massive, acute overdose. Methylene blue, 1 to 2 mg/kg/body weight intravenously or ascorbic acid 100 to 200 mg given orally should cause prompt reduction of the methemoglobinemia and disappearance of the cyanosis which is an aid in diagnosis. Oxidative Heinz body hemolytic anemia may also occur, and “bite cells” (degmacytes) may be present in a chronic overdosage situation. Red blood cell G-6-PD deficiency may predispose to hemolysis. Renal and hepatic impairment and occasional failure, usually due to hypersensitivity, may also occur.
Uses
Indicated for "symptomatic relief of pain, burning, urgency frequency, and other discomforts arising from irritation of the mucosa of the lower urinary tract" caused by infection, trauma, surgery, endoscopic procedures, or catheterization. The label cautions that "the use of phenazopyridine for relief of symptoms should not delay definitive diagnosis" of the underlying condition, and treatment should generally be limited to a few days.
Dosage forms & strengths
DOSAGE AND ADMINISTRATION 200 mg Tablets: Average adult dosage is one tablet 3 times a day after meals. When used concomitantly with an antibacterial agent for the treatment of a urinary tract infection, the administration of Phenazopyridine HCl should not exceed 2 days.
All identified pills
114
BROWN ROUND · Phenazopyridine
5 manufacturers
115
BROWN ROUND · Phenazopyridine
8 manufacturers
611
BROWN ROUND · Phenazopyridine
2 manufacturers
612
BROWN ROUND · Phenazopyridine
701
BROWN ROUND · Phenazopyridine
8 manufacturers
702
BROWN ROUND · Phenazopyridine
9 manufacturers
801
BROWN ROUND · Phenazopyridine
7 manufacturers
802
BROWN ROUND · Phenazopyridine
8 manufacturers
812
BROWN ROUND · Phenazopyridine
11 manufacturers
813
BROWN ROUND · Phenazopyridine
11 manufacturers
975
RED ROUND · Phenazopyridine
10 manufacturers
99
RED CAPSULE · Phenazopyridine
ALVA 1
RED ROUND · Phenazopyridine
AN 1
BROWN ROUND · Phenazopyridine
AN 2
BROWN ROUND · Phenazopyridine
AN 1
BROWN ROUND · Phenazopyridine
17 manufacturers
AN 2
BROWN ROUND · Phenazopyridine
26 manufacturers
BL 05
BROWN ROUND · Phenazopyridine
BL 06
BROWN ROUND · Phenazopyridine
BP 811
BROWN ROUND · Phenazopyridine
7 manufacturers
BP 812
BROWN ROUND · Phenazopyridine
7 manufacturers
C1
ORANGE ROUND · Phenazopyridine
C7
ORANGE ROUND · Phenazopyridine
CPC 64
RED ROUND · Phenazopyridine
CPC 64
BROWN ROUND · Phenazopyridine
CPC 860
RED OVAL · Phenazopyridine
CPC64
RED ROUND · Phenazopyridine
2 manufacturers
CPC64 A5
RED ROUND · Phenazopyridine
5 manufacturers
CPC64
BROWN ROUND · Phenazopyridine
CZ
RED ROUND · Phenazopyridine
J1
BROWN ROUND · Phenazopyridine
8 manufacturers
J2
BROWN ROUND · Phenazopyridine
9 manufacturers
M510
BROWN ROUND · Phenazopyridine
P75
BROWN ROUND · Phenazopyridine
4 manufacturers
P95
RED ROUND · Phenazopyridine
16 manufacturers
P97
BROWN ROUND · Phenazopyridine
12 manufacturers
PY 1
BROWN ROUND · Phenazopyridine
14 manufacturers
PY 2
BROWN ROUND · Phenazopyridine
14 manufacturers
U
BROWN ROUND · Phenazopyridine
2 manufacturers
VIP102
BROWN PENTAGON (5 SIDED) · Phenazopyridine
VIP103
BROWN PENTAGON (5 SIDED) · Phenazopyridine
W
BROWN ROUND · Phenazopyridine
5 manufacturers
WX
BROWN CAPSULE · Phenazopyridine
WX
BROWN OVAL · Phenazopyridine
4 manufacturers
X
BROWN ROUND · Phenazopyridine
p99
BROWN OVAL · Phenazopyridine
21 manufacturers
Side effects
Reported adverse effects include headache; gastrointestinal upset including nausea, vomiting, and diarrhea; hematologic effects such as methemoglobinemia and hemolytic anemia (particularly with overdose or in G6PD-deficient patients); and visual disturbances and renal/hepatic toxicity, usually associated with overdosage.