Naproxen 375mg Tablets

Manufacturer GLENMARK Active Ingredient Naproxen Tablets and Capsules(na PROKS en) Pronunciation na PROKS en
WARNING: This drug may raise the risk of heart and blood vessel problems like heart attack and stroke. These effects can be deadly. The risk may be greater if you have heart disease or risks for heart disease. However, it can also be raised even if you do not have heart disease or risks for heart disease. The risk can happen within the first weeks of using this drug and may be greater with higher doses or long-term use. Do not use this drug right before or after bypass heart surgery.This drug may raise the chance of severe and sometimes deadly stomach or bowel problems like ulcers or bleeding. The risk is greater in older people, and in people who have had stomach or bowel ulcers or bleeding before. These problems may occur without warning signs. @ COMMON USES: It is used to ease pain, swelling, and fever.It is used to ease painful period (menstrual) cycles.It is used to treat some types of arthritis. It is used to treat ankylosing spondylitis.It is used to treat gout attacks.It may be given to you for other reasons. Talk with the doctor.
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Drug Class
Nonsteroidal Anti-inflammatory Drug (NSAID)
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Pharmacologic Class
Cyclooxygenase (COX) Inhibitor
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Pregnancy Category
Category C (1st/2nd trimester), Category D (3rd trimester)
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FDA Approved
Jun 1976
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DEA Schedule
Not Controlled

Overview

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What is this medicine?

Naproxen is a type of medicine called a nonsteroidal anti-inflammatory drug, or NSAID. It works by reducing substances in the body that cause pain, fever, and inflammation (swelling). It's commonly used to treat pain from conditions like arthritis, menstrual cramps, and muscle aches.
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How to Use This Medicine

Taking Your Medication Correctly

To get the most benefit from your medication, follow your doctor's instructions carefully. Read all the information provided with your prescription and follow the instructions closely. You can take this medication with or without food, but if it causes stomach upset, take it with food. Always take it with a full glass of water.

It's essential to avoid taking certain medications with this drug, including cholestyramine, sucralfate, or antacids that contain magnesium or aluminum.

Storing and Disposing of Your Medication

To maintain the quality and safety of your medication, store it at room temperature, protected from light, and in a dry place. Do not store it in a bathroom. Keep all medications in a safe location, out of the reach of children and pets. When you no longer need this medication or it has expired, dispose of it properly. Do not flush it down the toilet or pour it down the drain unless instructed to do so by your pharmacist. If you have questions about disposing of your medication, ask your pharmacist, who may be aware of drug take-back programs in your area.

What to Do If You Miss 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 continue with your regular schedule. Do not take two doses at the same time or take extra doses. If you take this medication as needed, do not take it more frequently than directed by your doctor.
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Lifestyle & Tips

  • Take with food or milk to reduce stomach upset.
  • Avoid alcohol while taking naproxen, as it can increase the risk of stomach bleeding.
  • Stay well-hydrated, especially if you have kidney problems.
  • Do not take other NSAIDs (like ibuprofen or aspirin for pain) at the same time without consulting your doctor.
  • Report any signs of stomach bleeding (black, tarry stools; vomit that looks like coffee grounds) immediately.
  • Be aware of potential swelling in your hands or feet.

Dosing & Administration

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Adult Dosing

Standard Dose: For mild to moderate pain, dysmenorrhea, acute tendinitis, bursitis: 500 mg initially, then 250 mg every 6-8 hours as needed. For rheumatoid arthritis, osteoarthritis, ankylosing spondylitis: 250-500 mg twice daily. Maximum daily dose typically 1000 mg (or 1250 mg for initial acute pain).
Dose Range: 250 - 1250 mg

Condition-Specific Dosing:

rheumatoid_arthritis: 250-500 mg twice daily
osteoarthritis: 250-500 mg twice daily
ankylosing_spondylitis: 250-500 mg twice daily
acute_gout: 750 mg initially, then 250 mg every 8 hours until attack subsides
mild_moderate_pain: 500 mg initially, then 250 mg every 6-8 hours as needed
dysmenorrhea: 500 mg initially, then 250 mg every 6-8 hours as needed
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Pediatric Dosing

Neonatal: Not established
Infant: Not established
Child: For juvenile idiopathic arthritis (JIA) in children â‰Ĩ2 years: 10 mg/kg/day in 2 divided doses (max 1000 mg/day).
Adolescent: For juvenile idiopathic arthritis (JIA) in adolescents: 10 mg/kg/day in 2 divided doses (max 1000 mg/day). For pain/inflammation: Adult dosing may apply for older adolescents, but caution is advised.
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Dose Adjustments

Renal Impairment:

Mild: Use with caution; monitor renal function.
Moderate: Avoid use if possible. If necessary, use lowest effective dose and monitor closely. Consider extended dosing interval.
Severe: Contraindicated in advanced renal disease due to risk of worsening renal function and hyperkalemia.
Dialysis: Naproxen is highly protein-bound and not significantly removed by hemodialysis. Contraindicated in advanced renal disease.

Hepatic Impairment:

Mild: Use with caution; monitor liver function.
Moderate: Consider dose reduction (e.g., 50% reduction) and monitor closely. Avoid in severe hepatic impairment.
Severe: Avoid use due to increased risk of adverse effects and potential for accumulation.

Pharmacology

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Mechanism of Action

Naproxen is a nonsteroidal anti-inflammatory drug (NSAID) that exerts its anti-inflammatory, analgesic, and antipyretic effects by reversibly inhibiting cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2) enzymes. This inhibition leads to a reduction in the synthesis of prostaglandins, which are mediators of inflammation, pain, and fever.
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Pharmacokinetics

Absorption:

Bioavailability: 95%
Tmax: 2-4 hours (for naproxen base); 1-2 hours (for naproxen sodium)
FoodEffect: Food may delay the rate of absorption but does not significantly affect the extent of absorption.

Distribution:

Vd: 0.16 L/kg
ProteinBinding: >99% (primarily to albumin)
CnssPenetration: Limited

Elimination:

HalfLife: 12-17 hours
Clearance: 0.13 mL/min/kg
ExcretionRoute: Renal (approximately 95% as naproxen, 6-O-desmethylnaproxen, or their conjugates); Fecal (approximately 3%)
Unchanged: Less than 1%
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Pharmacodynamics

OnsetOfAction: Approximately 1 hour
PeakEffect: 2-4 hours
DurationOfAction: Up to 12 hours

Safety & Warnings

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BLACK BOX WARNING

CARDIOVASCULAR THROMBOTIC EVENTS: NSAIDs may cause an increased risk of serious cardiovascular thrombotic events, myocardial infarction, and stroke, which can be fatal. This risk may increase with duration of use. Patients with cardiovascular disease or risk factors for cardiovascular disease may be at greater risk. Naproxen is contraindicated in the setting of coronary artery bypass graft (CABG) surgery.

GASTROINTESTINAL RISK: NSAIDs cause an increased risk of serious gastrointestinal adverse events including bleeding, ulceration, and perforation of the stomach or intestines, which can be fatal. These events can occur at any time during use and without warning symptoms. Elderly patients and patients with a prior history of peptic ulcer disease and/or GI bleeding are at greater risk for serious GI events.
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Side Effects

Urgent Side Effects: Seek Medical Help Right Away

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 immediately or seek emergency medical attention:

Allergic Reaction: Rash, hives, itching, red, swollen, blistered, or peeling skin (with or without fever), wheezing, tightness in the chest or throat, difficulty breathing, swallowing, or talking, unusual hoarseness, or swelling of the mouth, face, lips, tongue, or throat.
Bleeding: Vomiting or coughing up blood, vomit that resembles coffee grounds, blood in the urine, black, red, or tarry stools, bleeding from the gums, abnormal vaginal bleeding, unexplained bruises or bruises that enlarge, or uncontrollable bleeding.
Kidney Problems: Inability to urinate, changes in urine output, blood in the urine, or sudden significant weight gain.
High Potassium Levels: Abnormal heartbeat, confusion, weakness, lightheadedness, dizziness, feeling faint, numbness or tingling, or shortness of breath.
High Blood Pressure: Severe headache or dizziness, fainting, or changes in vision.
Respiratory Issues: Shortness of breath, significant weight gain, or swelling in the arms or legs.
Cardiovascular Concerns: Chest pain or pressure, rapid heartbeat, or weakness on one side of the body.
Neurological Symptoms: Difficulty speaking or thinking, balance changes, drooping on one side of the face, or blurred vision.
General Concerns: Extreme fatigue or weakness, ringing in the ears, severe back pain, or flu-like symptoms.
Liver Problems: Dark urine, fatigue, decreased appetite, stomach upset or pain, light-colored stools, vomiting, or yellow skin and eyes. (Note: Liver problems can be life-threatening and have occurred with similar medications.)
Severe Skin Reactions: These include Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN), and other serious reactions, which can affect internal organs and be life-threatening. Seek immediate medical attention if you experience red, swollen, blistered, or peeling skin; red or irritated eyes; sores in the mouth, throat, nose, eyes, genitals, or skin; fever; chills; body aches; shortness of breath; or swollen glands.

Other Possible Side Effects

While many people may not experience side effects or only have mild ones, it's essential to be aware of the following:

Stomach pain or heartburn
Upset stomach
Constipation
Dizziness or headache
Drowsiness

If these or any other side effects bother you or persist, consult your doctor for guidance. Not all possible side effects are listed here. If you have concerns about side effects, discuss them with your doctor.

Reporting Side Effects

You can report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch. Your doctor can also provide medical advice on managing side effects.
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Seek Immediate Medical Attention If You Experience:

  • Severe stomach pain, black or tarry stools, vomiting blood or material that looks like coffee grounds (signs of GI bleeding)
  • Chest pain, shortness of breath, weakness on one side of the body, slurred speech (signs of heart attack or stroke)
  • Sudden weight gain, swelling in ankles/feet, decreased urination (signs of kidney problems or heart failure)
  • Yellowing of skin or eyes (jaundice), dark urine, unusual tiredness (signs of liver problems)
  • Severe skin rash, blistering, or peeling
  • Unexplained bruising or bleeding
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Before Using This Medicine

Before Taking This Medication: Important Information to Share with Your Doctor

It is essential to inform your doctor about the following conditions to ensure safe treatment:

Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Describe the allergic reaction and its symptoms.
Allergies to aspirin or nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen or naproxen.
A history of asthma triggered by salicylate medications, such as aspirin, or NSAIDs.
Certain health conditions, including:
+ Gastrointestinal (GI) bleeding or kidney problems.
+ Heart failure (weak heart) or a recent heart attack.
Concurrent use of other NSAIDs, salicylate drugs like aspirin, or pemetrexed.
Difficulty getting pregnant or ongoing fertility evaluations.
* Pregnancy, planned pregnancy, or pregnancy during treatment. This medication may harm an unborn baby if taken after 20 weeks of pregnancy. If you are between 20 and 30 weeks pregnant, only take this medication under your doctor's guidance. Do not take this medication if you are more than 30 weeks pregnant.

To ensure your safety, it is crucial to discuss all your medications (prescription, over-the-counter, natural products, and vitamins) and health conditions with your doctor and pharmacist. Verify that it is safe to take this medication with your existing treatments and health issues. Never start, stop, or adjust the dosage of any medication without consulting your doctor.
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Precautions & Cautions

It is essential to inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication. If you are taking this drug for an extended period, your doctor may recommend regular blood tests to monitor your condition.

This medication may interfere with certain laboratory tests, so it is crucial to notify all your healthcare providers and lab personnel that you are taking this drug. There is a risk of developing high blood pressure with medications like this one, so your doctor may advise you to have your blood pressure checked regularly.

Before consuming alcohol, discuss the potential risks with your doctor. If you smoke, talk to your doctor about the possible effects on your health. It is vital to follow your doctor's instructions regarding dosage and duration of treatment. Taking more than the prescribed amount or using this medication for longer than recommended may increase your risk of severe side effects.

If you have asthma, consult your doctor, as you may be more sensitive to this medication. Additionally, this drug may affect your blood's ability to clot, making you more prone to bleeding. To minimize this risk, be cautious and avoid injuries, use a soft toothbrush, and consider using an electric razor.

The use of medications like this one may increase the risk of heart failure, particularly in people with pre-existing heart failure. This may lead to a higher chance of heart attack, hospitalization for heart failure, and death. Discuss these risks with your doctor. Furthermore, people who have had a recent heart attack may have a higher risk of heart attack and heart-related death when taking this medication. In fact, studies have shown that individuals taking drugs like this one after a first heart attack were more likely to die within a year compared to those not taking these medications.

If you are taking aspirin to prevent heart attacks, consult your doctor about potential interactions. If you are on a low-sodium or sodium-free diet, inform your doctor, as some formulations of this medication may contain sodium.

Older adults (60 years or older) should use this medication with caution, as they may be more susceptible to side effects. Women of childbearing age should be aware that NSAIDs like this medication may affect ovulation, potentially impacting fertility. However, this effect is reversible when the medication is stopped. If you are breastfeeding, discuss the potential risks to your baby with your doctor.
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Overdose Information

Overdose Symptoms:

  • Drowsiness
  • Dizziness
  • Nausea
  • Vomiting
  • Epigastric pain
  • Indigestion
  • Heartburn
  • Lethargy
  • Acute renal failure (rare)
  • Hypotension (rare)
  • Respiratory depression (rare)
  • Coma (rare)

What to Do:

In case of suspected overdose, seek immediate medical attention. Call 911 or Poison Control at 1-800-222-1222. Management typically involves symptomatic and supportive care, including gastric lavage or activated charcoal if ingestion was recent.

Drug Interactions

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Contraindicated Interactions

  • Aspirin (high-dose, for antiplatelet effect, due to interference)
  • Other NSAIDs (increased risk of adverse effects)
  • Ketorolac (increased risk of adverse effects)
  • Advanced renal disease
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Major Interactions

  • Anticoagulants (e.g., Warfarin, Dabigatran, Rivaroxaban): Increased risk of bleeding.
  • Antiplatelet agents (e.g., Clopidogrel, Ticagrelor): Increased risk of bleeding.
  • SSRIs/SNRIs: Increased risk of GI bleeding.
  • Corticosteroids: Increased risk of GI ulceration and bleeding.
  • ACE Inhibitors/ARBs: Reduced antihypertensive effect, increased risk of renal impairment.
  • Diuretics (e.g., Furosemide, Hydrochlorothiazide): Reduced diuretic and antihypertensive effect, increased risk of renal impairment.
  • Lithium: Increased lithium plasma concentrations and toxicity.
  • Methotrexate: Increased methotrexate plasma concentrations and toxicity.
  • Cyclosporine/Tacrolimus: Increased risk of nephrotoxicity.
  • Digoxin: Increased digoxin plasma concentrations (less common but possible).
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Moderate Interactions

  • Beta-blockers: Reduced antihypertensive effect.
  • Hydantoins (e.g., Phenytoin): Increased phenytoin levels.
  • Sulfonylureas: Increased hypoglycemic effect.
  • Probenecid: Increased naproxen plasma concentrations and half-life.
  • Cholestyramine: May delay naproxen absorption.
  • Alcohol: Increased risk of GI irritation/bleeding.
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Minor Interactions

  • Antacids: May delay absorption but not extent.

Monitoring

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Baseline Monitoring

Complete Blood Count (CBC)

Rationale: To establish baseline for potential hematologic adverse effects (e.g., anemia, thrombocytopenia) with long-term use.

Timing: Before initiating long-term therapy.

Renal Function (BUN, Serum Creatinine, eGFR)

Rationale: To assess baseline renal function, as NSAIDs can cause renal impairment.

Timing: Before initiating therapy, especially in patients with pre-existing renal impairment or risk factors.

Liver Function Tests (ALT, AST, Bilirubin)

Rationale: To assess baseline hepatic function, as NSAIDs can cause liver enzyme elevations.

Timing: Before initiating therapy, especially in patients with pre-existing hepatic impairment or risk factors.

Blood Pressure

Rationale: NSAIDs can cause new onset hypertension or worsen pre-existing hypertension.

Timing: Before initiating therapy.

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Routine Monitoring

Renal Function (BUN, Serum Creatinine, eGFR)

Frequency: Periodically, especially with long-term use, in elderly patients, or those with risk factors for renal impairment (e.g., heart failure, diuretic use).

Target: Within normal limits or stable from baseline.

Action Threshold: Significant increase in creatinine (>20-30% from baseline) or decrease in eGFR; consider dose reduction or discontinuation.

Liver Function Tests (ALT, AST)

Frequency: Periodically with long-term use.

Target: Within normal limits or stable from baseline.

Action Threshold: Significant elevation (e.g., >3 times upper limit of normal); consider discontinuation.

Blood Pressure

Frequency: Regularly, especially in hypertensive patients.

Target: Individualized target.

Action Threshold: Sustained elevation; consider antihypertensive adjustment or NSAID discontinuation.

Complete Blood Count (CBC)

Frequency: Periodically with long-term use (e.g., annually or as clinically indicated).

Target: Within normal limits.

Action Threshold: Significant decrease in hemoglobin/hematocrit or platelet count; investigate for GI bleeding or other hematologic issues.

Signs/Symptoms of GI Bleeding

Frequency: Continuously (patient education is key).

Target: Absence of symptoms.

Action Threshold: Black, tarry stools; coffee-ground emesis; severe abdominal pain; unexplained fatigue/weakness; discontinue and seek medical attention.

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Symptom Monitoring

  • Signs of gastrointestinal bleeding (black, tarry stools; coffee-ground vomit; severe abdominal pain)
  • Signs of fluid retention/edema (swelling in ankles, feet, hands)
  • Unusual weight gain
  • Shortness of breath or chest pain (signs of cardiovascular events)
  • Changes in urination (decreased urine output, dark urine)
  • Yellowing of skin or eyes (jaundice)
  • Unusual bruising or bleeding
  • Persistent headache or dizziness
  • Severe skin rash or blistering

Special Patient Groups

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Pregnancy

Avoid use during the third trimester of pregnancy due to the risk of premature closure of the fetal ductus arteriosus and persistent pulmonary hypertension in the newborn. Use in the first and second trimesters should only be if the potential benefit justifies the potential risk to the fetus, and at the lowest effective dose for the shortest duration.

Trimester-Specific Risks:

First Trimester: Limited data, but potential for increased risk of miscarriage and cardiac malformations (though evidence is conflicting).
Second Trimester: Generally considered lower risk than third trimester, but still use with caution and only if clearly needed.
Third Trimester: High risk of premature closure of the fetal ductus arteriosus, leading to pulmonary hypertension in the newborn. Also potential for renal dysfunction in the fetus, oligohydramnios, and inhibition of labor.
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Lactation

Naproxen is excreted into breast milk in small amounts. While generally considered compatible with breastfeeding by some sources, caution is advised, especially with long-term use or high doses. Monitor the infant for adverse effects such as drowsiness, poor feeding, or gastrointestinal upset.

Infant Risk: L3 (Moderately Safe - caution advised). Low levels in milk, but potential for adverse effects in infant, especially if premature or with underlying conditions.
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Pediatric Use

Not recommended for children under 2 years of age. For children â‰Ĩ2 years with juvenile idiopathic arthritis, specific dosing guidelines apply. Use in children should be carefully weighed against risks, especially regarding renal and GI effects. Avoid in children with dehydration or hypovolemia.

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Geriatric Use

Elderly patients are at increased risk for serious adverse effects, particularly gastrointestinal bleeding, ulceration, perforation, and renal impairment. Use the lowest effective dose for the shortest duration. Monitor renal function, blood pressure, and for signs of GI bleeding more frequently.

Clinical Information

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Clinical Pearls

  • Naproxen has a longer half-life than ibuprofen, allowing for twice-daily dosing, which can improve adherence for chronic conditions.
  • Naproxen sodium (e.g., Aleve) is absorbed faster than naproxen base, leading to quicker pain relief, but the overall efficacy and duration are similar.
  • Always advise patients to take naproxen with food, milk, or antacids to minimize gastrointestinal upset.
  • Educate patients on the signs of GI bleeding and cardiovascular events, as these are serious potential side effects.
  • Consider a proton pump inhibitor (PPI) or H2 blocker for patients at high risk of GI complications (e.g., history of ulcers, concomitant corticosteroid or anticoagulant use).
  • Avoid concomitant use with other NSAIDs (including OTC ibuprofen or aspirin for pain) to prevent additive toxicity.
  • Naproxen can interfere with the antiplatelet effect of low-dose aspirin; if both are necessary, naproxen should be taken at least 30 minutes after or 8 hours before immediate-release aspirin.
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Alternative Therapies

  • Other NSAIDs (e.g., Ibuprofen, Diclofenac, Meloxicam, Celecoxib)
  • Acetaminophen (for pain and fever, no anti-inflammatory effect)
  • Opioid analgesics (for severe pain, with higher risk of side effects and dependence)
  • Topical NSAIDs (e.g., Diclofenac gel, for localized pain)
  • Corticosteroids (for severe inflammation, short-term use)
  • Disease-modifying antirheumatic drugs (DMARDs) for chronic inflammatory conditions like RA
  • Physical therapy, RICE (Rest, Ice, Compression, Elevation) for musculoskeletal injuries
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Cost & Coverage

Average Cost: $15 - $50 per 30 tablets (375mg)
Generic Available: Yes
Insurance Coverage: Tier 1 (Generic) or Tier 2 (Preferred Brand)
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General Drug Facts

If your symptoms or health issues persist or worsen, it is essential to contact your doctor for further guidance. To ensure safe use, never share your medication with others or take someone else's medication. This medication is accompanied by a Medication Guide, which provides crucial information for patients. Please read this guide carefully and review it again whenever you receive a refill. If you have any questions or concerns about this medication, we encourage you to discuss them with your doctor, pharmacist, or other healthcare provider. In the event of a suspected overdose, immediately call your local poison control center or seek emergency medical attention. When reporting the incident, be prepared to provide details about the medication taken, the amount, and the time it occurred.