Uro-Pain 95mg Tablets
Overview
What is this medicine?
How to Use This Medicine
To use this medication correctly, follow your doctor's instructions and read all the information provided. Take the medication by mouth, either with or after food, and swallow it with a full glass of water.
Storing and Disposing of Your Medication
Store the medication at room temperature, protected from light, and in a dry place. Avoid storing it in a bathroom. Keep all medications in a safe location, out of the reach of children and pets. When disposing of unused or expired medication, do not flush it down the toilet or pour it down the drain unless instructed to do so. Instead, check with your pharmacist for guidance on the best disposal method. You may also want to explore local drug take-back programs.
Missing a Dose
If you take this medication regularly and miss a dose, take it as soon as you remember. However, if it's close to the time for your next dose, skip the missed dose and resume your normal schedule. Do not take two doses at the same time or take extra doses. If you take this medication as needed, follow your doctor's instructions and do not take it more frequently than recommended.
Lifestyle & Tips
- Drink plenty of fluids to help flush out the urinary tract.
- Take the medication after meals to reduce stomach upset.
- Do not use for more than 2 days when taken with an antibiotic for a UTI, unless directed by your doctor.
Available Forms & Alternatives
Available Strengths:
Dosing & Administration
Adult Dosing
Condition-Specific Dosing:
Pediatric Dosing
Dose Adjustments
Renal Impairment:
Hepatic Impairment:
Pharmacology
Mechanism of Action
Pharmacokinetics
Absorption:
Distribution:
Elimination:
Pharmacodynamics
Safety & Warnings
Side Effects
Although rare, some people may experience severe and potentially life-threatening side effects while taking this medication. If you notice any of the following symptoms, contact your doctor or seek immediate medical attention:
Signs of an allergic reaction, such as:
+ Rash
+ Hives
+ Itching
+ Red, swollen, blistered, or peeling skin with or without fever
+ Wheezing
+ Tightness in the chest or throat
+ Trouble breathing, swallowing, or talking
+ Unusual hoarseness
+ Swelling of the mouth, face, lips, tongue, or throat
Signs of methemoglobinemia, a rare but potentially deadly condition, such as:
+ Blue or gray discoloration of the lips, nails, or skin
+ Abnormal heartbeat
+ Seizures
+ Severe dizziness or fainting
+ Severe headache
+ Excessive sleepiness
+ Feeling extremely tired or weak
+ Shortness of breath
Signs of a meningococcal infection, such as:
+ Severe headache with or without nausea, vomiting, fever, or stiff neck or back
+ Confusion
+ High fever
+ Fever with a rash
+ Sensitivity to light
+ Severe muscle aches or pain with or without flu-like symptoms
Signs of liver problems, such as:
+ Dark urine
+ Fatigue
+ Decreased appetite
+ Upset stomach or stomach pain
+ Light-colored stools
+ Vomiting
+ Yellow skin or eyes
Feeling extremely tired or weak
Difficulty urinating or changes in urine output
Changes in vision
Other Possible Side Effects
Like all medications, this drug can cause side effects. While many people may not experience any side effects or only minor ones, it's essential to contact your doctor if you're bothered by any of the following:
Headache
Diarrhea
Upset stomach or vomiting
This is not an exhaustive list of possible side effects. If you have questions or concerns about side effects, consult your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.
Seek Immediate Medical Attention If You Experience:
- Bluish discoloration of skin, lips, or nails (methemoglobinemia)
- Yellowing of skin or eyes (jaundice)
- Unusual tiredness or weakness, pale skin (signs of hemolytic anemia)
- Fever, chills, sore throat (signs of infection, not treated by this drug)
- Rash, itching, swelling (allergic reaction)
- Severe stomach pain, nausea, vomiting
Before Using This Medicine
It is essential to inform your doctor about the following:
Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Be sure to describe the allergic reaction you experienced, including any symptoms that occurred.
Certain health conditions, including:
+ Kidney problems
+ Kidney infection during pregnancy
+ Liver problems
This list is not exhaustive, and it is crucial to discuss all your health problems and medications with your doctor.
To ensure your safety, please provide your doctor and pharmacist with a comprehensive list of:
All prescription and over-the-counter (OTC) medications you are taking
Natural products and vitamins you are using
* Any health problems you have
It is vital to verify that it is safe to take this medication with all your other medications and health conditions. Never start, stop, or change the dose of any medication without first consulting your doctor.
Precautions & Cautions
This drug is not a substitute for an antibiotic and will not cure a bladder infection. To avoid staining, take precautions to protect your clothing and fabrics. Additionally, this medication may stain contact lenses. You may notice that your urine or stools turn orange or red, but this is a normal and harmless side effect.
When taking this medication, be aware that breaking or holding the tablet in your mouth before swallowing can cause tooth discoloration. If you have concerns, discuss them with your doctor.
If you have a deficiency of the enzyme glucose-6-phosphate dehydrogenase (G6PD), you may be at risk of developing anemia. This deficiency is more common in individuals of African, South Asian, Middle Eastern, and Mediterranean descent.
Do not exceed the prescribed duration of treatment. This medication may interfere with certain laboratory tests, so it is crucial to inform all your healthcare providers and laboratory personnel that you are taking this drug.
If you are pregnant, planning to become pregnant, or breastfeeding, consult your doctor to discuss the potential benefits and risks to you and your baby.
Overdose Information
Overdose Symptoms:
- Methemoglobinemia (cyanosis, shortness of breath, dizziness, fatigue)
- Hemolytic anemia (pallor, jaundice, dark urine)
- Renal dysfunction
- Hepatic dysfunction
- Vertigo
- Nausea
- Vomiting
What to Do:
Seek immediate medical attention. Call 911 or Poison Control at 1-800-222-1222. Treatment may involve methylene blue for methemoglobinemia, blood transfusions for severe hemolytic anemia, and supportive care.
Drug Interactions
Moderate Interactions
- Interference with laboratory tests (e.g., urine bilirubin, urobilinogen, ketones, protein, glucose, porphyrins, albumin, phenolsulfonphthalein (PSP) excretion tests, urine specific gravity, urine colorimetric tests).
- Prilocaine (increased risk of methemoglobinemia)
Monitoring
Baseline Monitoring
Rationale: To assess baseline kidney function, as the drug is renally excreted and contraindicated in severe renal impairment.
Timing: Prior to initiation, especially in elderly or those with suspected renal issues.
Routine Monitoring
Frequency: Daily
Target: Significant reduction or resolution of symptoms.
Action Threshold: If symptoms persist or worsen after 2 days, re-evaluate diagnosis and treatment.
Frequency: Daily
Target: Orange to reddish-brown discoloration (expected effect).
Action Threshold: Unusual color changes (e.g., blue/green) or lack of expected discoloration may indicate issues.
Frequency: Daily, especially in patients with G6PD deficiency or renal impairment.
Target: Absence of cyanosis (bluish discoloration of skin/nails), shortness of breath, or unusual fatigue.
Action Threshold: If signs develop, discontinue drug immediately and seek medical attention.
Frequency: Daily, especially in patients with G6PD deficiency.
Target: Absence of pallor, yellowing of skin/eyes, or dark/tea-colored urine.
Action Threshold: If signs develop, discontinue drug immediately and seek medical attention.
Symptom Monitoring
- Relief of urinary pain, burning, urgency, and frequency
- Urine discoloration (orange to reddish-brown)
- Signs of allergic reaction (rash, itching, swelling)
- Signs of methemoglobinemia (bluish skin/nails, shortness of breath, dizziness, fatigue)
- Signs of hemolytic anemia (unusual tiredness, pale skin, yellowing of skin/eyes, dark urine)
- Gastrointestinal upset (nausea, vomiting, diarrhea)
Special Patient Groups
Pregnancy
Category B. While animal studies have not shown harm, there are no adequate and well-controlled studies in pregnant women. Use only if clearly needed and potential benefits outweigh risks.
Trimester-Specific Risks:
Lactation
Excreted in breast milk. Use with caution. The American Academy of Pediatrics considers it compatible with breastfeeding, but monitor infant for adverse effects (e.g., jaundice, methemoglobinemia).
Pediatric Use
Generally not recommended for children under 12 years of age due to lack of established safety and efficacy, and increased risk of methemoglobinemia in infants and young children.
Geriatric Use
Use with caution due to increased likelihood of impaired renal function, which can lead to accumulation and increased risk of adverse effects like methemoglobinemia and hemolytic anemia. Lower doses or avoidance may be necessary.
Clinical Information
Clinical Pearls
- Inform patients that phenazopyridine will turn urine orange or reddish-brown, and may stain clothing or contact lenses.
- Emphasize that this drug is for symptomatic relief only and does not treat the underlying infection; it should be used in conjunction with an appropriate antibiotic for UTIs.
- Advise patients to take the medication with or after food to minimize gastrointestinal upset.
- Instruct patients to discontinue the drug and seek medical attention immediately if they experience bluish discoloration of skin/nails, yellowing of skin/eyes, or unusual fatigue.
- Limit use to a maximum of 2 days when co-administered with an antibiotic for UTI, as prolonged use increases the risk of adverse effects without additional benefit.
Alternative Therapies
- Non-steroidal anti-inflammatory drugs (NSAIDs) for pain relief (e.g., ibuprofen, naproxen)
- Acetaminophen for pain relief
- Antispasmodics (e.g., oxybutynin, tolterodine) for bladder spasms (different mechanism)
- Antibiotics (for the underlying infection, not for symptomatic relief)