Naproxen 375mg Tablets
Overview
What is this medicine?
How to Use This Medicine
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.
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.
Available Forms & Alternatives
Available Strengths:
- Naproxen 125mg/5ml Suspension
- Naproxen Dr/ec 375mg Tablets
- Naproxen 250mg Tablets
- Naproxen 500mg Tablets
- Naproxen 375mg Tablets
- Naproxen Sodium 550mg Tablets
- Naproxen Sodium 275mg Tablets
- Naproxen Sodium 220mg Tablets
- Naproxen Sodium CR 375mg Tabs (24h)
- Naproxen Sod 500mg CR Tablets
- Naproxen Sodium 550mg Tablets
- Naproxen Dr/ec 500mg Tablets
- Naproxen Sodium ER 375mg Tabs (24h)
- Naproxen Sod 500mg ER Tablets
- Naproxen 750mg ER Tablets
- Naproxen Dr/ec 500mg Tablets
- Naproxen Dr/ec 375mg Tablets
- Naproxen Sodium CR 375mg Tabs (24h)
- Naproxen Sod 500mg CR Tablets
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
BLACK BOX WARNING
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.
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 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.
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
Before Using This Medicine
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.
Precautions & Cautions
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.
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
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
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).
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.
Minor Interactions
- Antacids: May delay absorption but not extent.
Monitoring
Baseline Monitoring
Rationale: To establish baseline for potential hematologic adverse effects (e.g., anemia, thrombocytopenia) with long-term use.
Timing: Before initiating long-term therapy.
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.
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.
Rationale: NSAIDs can cause new onset hypertension or worsen pre-existing hypertension.
Timing: Before initiating therapy.
Routine Monitoring
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.
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.
Frequency: Regularly, especially in hypertensive patients.
Target: Individualized target.
Action Threshold: Sustained elevation; consider antihypertensive adjustment or NSAID discontinuation.
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.
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.
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
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:
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.
Pediatric Use
Not recommended for children under 2 years of age. For children âĨ2 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.
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
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.
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