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Clinical data | |
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Trade names | Pyridium, others |
AHFS/ Drugs.com | Monograph |
MedlinePlus | a682231 |
License data |
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Pregnancy category |
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Routes of administration | By mouth |
Drug class | Azo dye [1] |
Legal status | |
Legal status |
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Identifiers | |
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Chemical and physical data | |
Formula | C11H11N5 |
Molar mass | 213.244 g·mol−1 |
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Phenazopyridine, sold under the brand name Pyridium among others, is a medication used to help with the discomfort caused by urinary tract infection, surgery, or injury to the urinary tract. [1] For urinary tract infection it may be used together with antibiotics for the first two days. [1] It is taken by mouth. [1]
Side effects may include orange colored urine and other body fluids. [1] [2] Other side effects may include yellowish skin, methemoglobinemia, sulfhemoglobinemia, and hemolytic anemia. [1] [3] Use is not recommended in those with kidney or liver problems. [1] There is no evidence of harm with use during pregnancy. [4] Use during breastfeeding is not recommended. [4] Phenazopyridine is a azo dye and how it works is not entirely clear. [1]
Phenazopyridine came into medical use in the 1930s. [5] It maybe available as a generic medication and over the counter. [1] [6] In the United States six doses of 200 mg costs about 8 USD as of 2020. [7] It is not easily available in Canada as of 2015, though some pharmacies will make it. [8]
![]() | |
Clinical data | |
---|---|
Trade names | Pyridium, others |
AHFS/ Drugs.com | Monograph |
MedlinePlus | a682231 |
License data |
|
Pregnancy category |
|
Routes of administration | By mouth |
Drug class | Azo dye [1] |
Legal status | |
Legal status |
|
Identifiers | |
| |
Chemical and physical data | |
Formula | C11H11N5 |
Molar mass | 213.244 g·mol−1 |
![]() ![]() |
Phenazopyridine, sold under the brand name Pyridium among others, is a medication used to help with the discomfort caused by urinary tract infection, surgery, or injury to the urinary tract. [1] For urinary tract infection it may be used together with antibiotics for the first two days. [1] It is taken by mouth. [1]
Side effects may include orange colored urine and other body fluids. [1] [2] Other side effects may include yellowish skin, methemoglobinemia, sulfhemoglobinemia, and hemolytic anemia. [1] [3] Use is not recommended in those with kidney or liver problems. [1] There is no evidence of harm with use during pregnancy. [4] Use during breastfeeding is not recommended. [4] Phenazopyridine is a azo dye and how it works is not entirely clear. [1]
Phenazopyridine came into medical use in the 1930s. [5] It maybe available as a generic medication and over the counter. [1] [6] In the United States six doses of 200 mg costs about 8 USD as of 2020. [7] It is not easily available in Canada as of 2015, though some pharmacies will make it. [8]