Leflunomide
Severe
Database
Clinical effect not specified
Source: DDInter
Drug reference
phenazopyridine
Urinary analgesic · Analgesic
Urinary analgesicAnalgesic
CDSCO approved
EXCRETION
—
not curated
INTERACTIONS
6 major
SEVERE in our sources
PREGNANCY
—
not curated
Top interactionssee all 6 →
- LeflunomideSevereDatabaseDDInter
- LomitapideSevereDatabaseDDInter
- MipomersenSevereDatabaseDDInter
- Nitrous AcidSevereDatabaseDDInter
Mechanism
Phenazopyridine is an orange dye which exerts analgesic action in the urinary tract.
Indications
symptomatic relief of burning sensation due to cystitissymptomatic relief of dysuria due to cystitissymptomatic relief of urgency due to cystitis
Dosing
- Adult
- 200–400 mg TDS
Side effects
Common
nauseaepigastric pain
Drug interactions
Lomitapide
Severe
Database
Clinical effect not specified
Source: DDInter
Mipomersen
Severe
Database
Clinical effect not specified
Source: DDInter
Nitrous Acid
Severe
Database
Clinical effect not specified
Source: DDInter
Pexidartinib
Severe
Database
Clinical effect not specified
Source: DDInter
Teriflunomide
Severe
Database
Clinical effect not specified
Source: DDInter
6 additional low-confidence interactions hidden — those rows lack a documented mechanism or management plan in our sources.
Related guidelines
Ask House about phenazopyridine
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Sources: KD Tripathi 7e·Verified: 2026-05-10 · House clinical team