Ibuprofen IBUPROFEN PREFERRED PHARMACEUTICALS INC. FDA Approved Ibuprofen tablets, USP contain the active ingredient ibuprofen, which is (±) - 2 - (p - isobutylphenyl) propionic acid. Ibuprofen is a white powder with a melting point of 74-77°C and is very slightly soluble in water (<1 mg/mL) and readily soluble in organic solvents such as ethanol and acetone. The structural formula is represented below: Ibuprofen, a nonsteroidal anti-inflammatory drug (NSAID), is available in 300 mg, 400 mg, 600 mg, and 800 mg tablets for oral administration. Inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, magnesium stearate, microcrystalline cellulose, pregelatinized starch, polyethylene glycol, soidum starch glycoate, stearic acid, talc, titanium dioxide. Chemical Structure

Drug Facts

Composition & Profile

Strengths
400 mg
Quantities
2 bottles 8 bottles 3 bottles 5 bottles 6 bottles 9 bottles
Treats Conditions
Indications And Usage Carefully Consider The Potential Benefits And Risks Of Ibuprofen Tablets And Other Treatment Options Before Deciding To Use Ibuprofen Use The Lowest Effective Dose For The Shortest Duration Consistent With Individual Patient Treatment Goals See Warnings Ibuprofen Tablets Are Indicated For Relief Of The Signs And Symptoms Of Rheumatoid Arthritis And Osteoarthritis Ibuprofen Tablets Are Indicated For Relief Of Mild To Moderate Pain Ibuprofen Tablets Are Also Indicated For The Treatment Of Primary Dysmenorrhea Controlled Clinical Trials To Establish The Safety And Effectiveness Of Ibuprofen Tablets In Children Have Not Been Conducted
Pill Appearance
Shape: oval Color: white Imprint: BI4

Identifiers & Packaging

Container Type BOTTLE
UNII
WK2XYI10QM
Packaging

HOW SUPPLIED Ibuprofen tablets, USP are available in the following strengths, colors and sizes: 400 mg (white, oval shaped, debossed BI 4) Bottles of 20 NDC 68788-4039-2 Bottles of 28 NDC 68788-4039-8 Bottles of 30 NDC 68788-4039-3 Bottles of 50 NDC 68788-4039-5 Bottles of 60 NDC 68788-4039-6 Bottles of 90 NDC 68788-4039-9 Bottles of 100 NDC 68788-4039-1 Store at 20°C - 25°C (68° - 77°F) [see USP Controlled Room Temperature]. Avoid excessive heat 40°C (104°F).; PRINCIPAL DISPLAY PANEL - 400 mg Tablet Bottle Label NDC 68788-4039 Rx Only Ibuprofen Tablets, USP 400 mg Printed Medication guide at: www.wprx.com/prescription-catalog Westminster Pharmaceuticals Repackaged By: Preferred Pharmaceuticals Inc. Ibuprofen Tablets USP 400mg

Package Descriptions
  • HOW SUPPLIED Ibuprofen tablets, USP are available in the following strengths, colors and sizes: 400 mg (white, oval shaped, debossed BI 4) Bottles of 20 NDC 68788-4039-2 Bottles of 28 NDC 68788-4039-8 Bottles of 30 NDC 68788-4039-3 Bottles of 50 NDC 68788-4039-5 Bottles of 60 NDC 68788-4039-6 Bottles of 90 NDC 68788-4039-9 Bottles of 100 NDC 68788-4039-1 Store at 20°C - 25°C (68° - 77°F) [see USP Controlled Room Temperature]. Avoid excessive heat 40°C (104°F).
  • PRINCIPAL DISPLAY PANEL - 400 mg Tablet Bottle Label NDC 68788-4039 Rx Only Ibuprofen Tablets, USP 400 mg Printed Medication guide at: www.wprx.com/prescription-catalog Westminster Pharmaceuticals Repackaged By: Preferred Pharmaceuticals Inc. Ibuprofen Tablets USP 400mg

Overview

Ibuprofen tablets, USP contain the active ingredient ibuprofen, which is (±) - 2 - (p - isobutylphenyl) propionic acid. Ibuprofen is a white powder with a melting point of 74-77°C and is very slightly soluble in water (<1 mg/mL) and readily soluble in organic solvents such as ethanol and acetone. The structural formula is represented below: Ibuprofen, a nonsteroidal anti-inflammatory drug (NSAID), is available in 300 mg, 400 mg, 600 mg, and 800 mg tablets for oral administration. Inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, magnesium stearate, microcrystalline cellulose, pregelatinized starch, polyethylene glycol, soidum starch glycoate, stearic acid, talc, titanium dioxide. Chemical Structure

Indications & Usage

Carefully consider the potential benefits and risks of Ibuprofen tablets and other treatment options before deciding to use ibuprofen. Use the lowest effective dose for the shortest duration consistent with individual patient treatment goals [see WARNINGS ]. Ibuprofen tablets are indicated for relief of the signs and symptoms of rheumatoid arthritis and osteoarthritis. Ibuprofen tablets are indicated for relief of mild to moderate pain. Ibuprofen tablets are also indicated for the treatment of primary dysmenorrhea. Controlled clinical trials to establish the safety and effectiveness of Ibuprofen tablets in children have not been conducted.

Dosage & Administration

Carefully consider the potential benefits and risks of Ibuprofen Tablets, USP and other treatment options before deciding to use Ibuprofen Tablets, USP. Use the lowest effective dose for the shortest duration consistent with individual patient treatment goals [see WARNINGS ]. After observing the response to initial therapy with Ibuprofen Tablets, USP, the dose and frequency should be adjusted to suit an individual patient's needs. Do not exceed 3200 mg total daily dose. If gastrointestinal complaints occur, administer Ibuprofen tablets with meals or milk. Rheumatoid arthritis and osteoarthritis, including flare-ups of chronic disease Suggested Dosage: 1200 mg-3200 mg daily (400 mg, 600 mg or 800 mg tid or qid). Individual patients may show a better response to 3200 mg daily, as compared with 2400 mg, although in well-controlled clinical trials patients on 3200 mg did not show a better mean response in terms of efficacy. Therefore, when treating patients with 3200 mg/ day, the physician should observe sufficient increased clinical benefits to offset potential increased risk. The dose should be tailored to each patient, and may be lowered or raised depending on the severity of symptoms either at time of initiating drug therapy or as the patient responds or fails to respond. In general, patients with rheumatoid arthritis seem to require higher doses of Ibuprofen tablets than do patients with osteoarthritis. The smallest dose of Ibuprofen tablets that yields acceptable control should be employed. A linear blood level dose-response relationship exists with single doses up to 800 mg [See CLINICAL PHARMACOLOGY for effects of food on rate of absorption]. The availability of three tablet strengths facilitates dosage adjustment. In chronic conditions , a therapeutic response to therapy with Ibuprofen tablets is sometimes seen in a few days to a week but most often is observed by two weeks. After a satisfactory response has been achieved, the patient's dose should be reviewed and adjusted as required. Mild to moderate pain 400 mg every 4 to 6 hours as necessary for relief of pain. In controlled analgesic clinical trials, doses of Ibuprofen tablets greater than 400 mg were no more effective than the 400 mg dose. Dysmenorrhea For the treatment of dysmenorrhea, beginning with the earliest onset of such pain, Ibuprofen tablets should be given in a dose of 400 mg every 4 hours as necessary for the relief of pain.

Warnings & Precautions
WARNINGS CARDIOVASCULAR EFFECTS Cardiovascular Thrombotic Events Clinical trials of several COX-2 selective and nonselective NSAIDs of up to three years duration have shown an increased risk of serious cardiovascular (CV) thrombotic events, including myocardial infarction (MI) and stroke, which can be fatal. Based on available data, it is unclear that the risk for CV thrombotic events is similar for all NSAIDs. The relative increase in serious CV thrombotic events over baseline conferred by NSAID use appears to be similar in those with and without known CV disease or risk factors for CV disease. However, Patients with known CV disease or risk factors had a higher absolute incidence of excess serious CV thrombotic events, due to their increased baseline rate. Some observational studies found that this increased risk of serious CV thrombotic events began as early as the first weeks of treatment. The increase in CV thrombotic risk has been observed most consistently at higher doses. To minimize the potential risk for an adverse CV event in NSAID-treated patients, use the lowest effective dose for the shortest duration possible. Physicians and patients should remain alert for the development of such events, throughout the entire treatment course, even in the absence of previous CV symptoms. Patients should be informed about the symptoms of serious CV events and the steps to take if they occur. There is no consistent evidence that concurrent use of aspirin mitigates the increased risk of serious CV thrombotic events associated with NSAID use. The concurrent use of aspirin and an NSAID, such as Ibuprofen, increase the risk of serious gastrointestinal (GI) events [see WARNINGS ]. Status Post Coronary Artery Bypass Graft (CABG) Surgery Two large, controlled clinical trials of a COX-2 selective NSAID for the treatment of pain in the first 10-14 days following CABG surgery found an increased incidence of myocardial infarction and stroke. NSAIDs are contraindicated in the setting of CABG [see CONTRAINDICATIONS ]. Post-MI Patients Observational studies conducted in the Danish National Registry have demonstrated that patients treated with NSAIDs in the post-MI period were at increased risk of reinfarction, CV-related death, and all-cause mortality beginning in the first week of treatment. In this same cohort, the incidence of death in the first year post MI was 20 per 100 person years in NSAID-treated patients compared to 12 per 100 person years in non-NSAID exposed patients. Although the absolute rate of death declined somewhat after the first year post-MI, the increased relative risk of death in NSAID users persisted over at least the next four years of follow-up. Avoid the use of Ibuprofen tablets in patients with a recent MI unless the benefits are expected to outweigh the risk of recurrent CV thrombotic events. If Ibuprofen tablets are used in patients with a recent MI, monitor patients for signs of cardiac ischemia . Hypertension NSAIDs including Ibuprofen tablets, can lead to onset of new hypertension or worsening of preexisting hypertension, either of which may contribute to the increased incidence of CV events. Patients taking thiazides or loop diuretics may have impaired response to these therapies when taking NSAIDs. NSAIDs, including Ibuprofen tablets, should be used with caution in patients with hypertension. Blood pressure (BP) should be monitored closely during the initiation of NSAID treatment and throughout the course of therapy. Heart Failure and Edema The Coxib and traditional NSAID Trialists' Collaboration meta-analysis of randomized controlled trials demonstrated an approximately two-fold increase in hospitalizations for heart failure in COX-2 selective-treated patients and nonselective NSAID-treated patients compared to placebotreated patients. In a Danish National Registry study of patients with heart failure, NSAID use increased the risk of MI, hospitalization for heart failure, and death. Additionally, fluid retention and edema have been observed in some patients treated with NSAIDs. Use of Ibuprofen may blunt the CV effects of several therapeutic agents used to treat these medical conditions [e.g., diuretics, ACE inhibitors, or angiotensin receptor blockers (ARBs)] [See Drug Interactions ]. Avoid the use of Ibuprofen tablets in patients with severe heart failure unless the benefits are expected to outweigh the risk of worsening heart failure. If Ibuprofen tablets are used in patients with severe heart failure, monitor patients for signs of worsening heart failure. Gastrointestinal Effects - Risk of Ulceration, Bleeding, and Perforation NSAIDs, including Ibuprofen tablets, can cause serious gastrointestinal (GI) adverse events including inflammation, bleeding, ulceration, and perforation of the stomach, small intestine, or large intestine, which can be fatal. These serious adverse events can occur at any time, with or without warning symptoms, in patients treated with NSAIDs. Only one in five patients, who develop a serious upper GI adverse event on NSAID therapy, is symptomatic. Upper GI ulcers, gross bleeding, or perforation caused by NSAIDs occur in approximately 1% of patients treated for 3-6 months, and in about 2-4% of patients treated for one year. These trends continue with longer duration of use, increasing the likelihood of developing a serious GI event at some time during the course of therapy. However, even short-term therapy is not without risk. NSAIDs should be prescribed with extreme caution in those with a prior history of ulcer disease or gastrointestinal bleeding. Patients with a prior history of peptic ulcer disease and/or gastrointestinal bleeding who use NSAIDs have a greater than 10-fold increased risk for developing a GI bleed compared to patients treated with neither of these risk factors. Other factors that increase the risk of GI bleeding in patients treated with NSAIDs include concomitant use of oral corticosteroids or anticoagulants, longer duration of NSAID therapy, smoking, use of alcohol, older age, and poor general health status. Most spontaneous reports of fatal GI events are in elderly or debilitated patients and therefore, special care should be taken in treating this population. To minimize the potential risk for an adverse GI event in patients treated with a NSAID, the lowest effective dose should be used for the shortest possible duration. Patients and physicians should remain Alert for signs and symptoms of GI ulcerations and bleeding during NSAID therapy and promptly initiate additional evaluation and treatment if a serious GI event is suspected. This should include discontinuation of the NSAID until a serious GI adverse event is ruled out. For high-risk patients, alternate therapies that do not involve NSAIDs should be considered. Renal Effects Long-term administration of NSAIDs has resulted in renal papillary necrosis and other renal injury. Renal toxicity has also been seen in patients in whom renal prostaglandins have a compensatory role in the maintenance of renal perfusion. In these patients, administration of a NSAID may cause a dose dependent reduction in prostaglandin formation and, secondarily, in renal blood flow, which may precipitate overt renal decompensation. Patients at greatest risk of this reaction are those with impaired renal function, heart failure, liver dysfunction, those taking diuretics and ACE inhibitors, and the elderly. Discontinuation of NSAID therapy is usually followed by recovery to the pretreatment state. Advanced Renal Disease No information is available from controlled clinical studies regarding the use of Ibuprofen tablets in patients with advanced renal disease. Therefore, treatment with Ibuprofen tablets is not recommended in these patients with advanced renal disease. If Ibuprofen tablet therapy must be initiated, close monitoring of the patients renal function is advisable. Anaphylactoid Reactions As with other NSAIDs, anaphylactoid reactions may occur in patients without known prior exposure to Ibuprofen tablets. Ibuprofen tablets should not be given to patients with the aspirin triad. This symptom complex typically occurs in asthmatic patients who experience rhinitis with or without nasal polyps, or who exhibit severe, potentially fatal bronchospasm after taking aspirin or other NSAIDs [see CONTRAINDICATIONS and PRECAUTIONS, Preexisting Asthma ]. Emergency help should be sought in cases where an anaphylactoid reaction occurs. Serious Skin Reactions NSAIDs, including Ibuprofen, can cause serious skin adverse reactions such as exfoliative dermatitis, Stevens-Johnson Syndrome (SJS), and toxic epidermal necrolysis (TEN), which can be fatal. NSAIDs can also cause fixed drug eruption (FDE). FDE may present as a more severe variant known as generalized bullous fixed drug eruption (GBFDE), which can be life-threatening. These serious events may occur without warning. Inform patients about the signs and symptoms of serious skin reactions, and to discontinue the use of Ibuprofen tablets at the first appearance of skin rash or any other sign of hypersensitivity. Ibuprofen tablets are contraindicated in patients with previous serious skin reactions to NSAIDs (see CONTRAINDICATIONS ) . Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS) Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS) has been reported in patients taking NSAIDs such as Ibuprofen tablets. Some of these events have been fatal or life-threatening. DRESS typically, although not exclusively, presents with fever, rash, lymphadenopathy, and/or facial swelling. Other clinical manifestations may include hepatitis, nephritis, hematological abnormalities, myocarditis, or myositis. Sometimes symptoms of DRESS may resemble an acute viral infection. Eosinophilia is often present. Because this disorder is variable in its presentation, other organ systems not noted here may be involved. It is important to note that early manifestations of hypersensitivity, such as fever or lymphadenopathy, may be present even though rash is not evident. If such signs or symptoms are present, discontinue Ibuprofen tablets and evaluate the patient immediately. Fetal Toxicity Premature Closure of Fetal Ductus Arteriosus Avoid use of NSAIDs, including Ibuprofen tablets, in pregnant women at about 30 weeks gestation and later. NSAIDs including Ibuprofen tablets, increase the risk of premature closure of the fetal ductus arteriosus at approximately this gestational age. Oligohydramnios/Neonatal Renal Impairment Use of NSAIDs, including Ibuprofen tablets, at about 20 weeks gestation or later in pregnancy may cause fetal renal dysfunction leading to oligohydramnios and, in some cases, neonatal renal impairment. These adverse outcomes are seen, on average, after days to weeks of treatment, although oligohydramnios has been infrequently reported as soon as 48 hours after NSAID initiation. Oligohydramnios is often, but not always, reversible with treatment discontinuation. Complications of prolonged oligohydramnios may, for example, include limb contractures and delayed lung maturation. In some postmarketing cases of impaired neonatal renal function, invasive procedures such as exchange transfusion or dialysis were required. If NSAID treatment is necessary between about 20 weeks and 30 weeks gestation, limit Ibuprofen tablets use to the lowest effective dose and shortest duration possible. Consider ultrasound monitoring of amniotic fluid if Ibuprofen tablets treatment extends beyond 48 hours. Discontinue Ibuprofen tablets if oligohydramnios occurs and follow up according to clinical practice [see PRECAUTIONS; Pregnancy ].
Boxed Warning
Cardiovascular Thrombotic Events • Nonsteroidal anti-inflammatory drugs (NSAIDs) cause an increased risk of serious cardiovascular thrombotic events, including myocardial infarction and stroke, which can be fatal. This risk may occur early in treatment and may increase with duration of use. [See WARNINGS and PRECAUTIONS ]. • Ibuprofen tablets are contraindicated in the setting of coronary artery bypass graft (CABG) surgery [see CONTRAINDICATIONS and WARNINGS ]. 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 are at greater risk for serious gastrointestinal events. [See WARNINGS ].
Contraindications

Ibuprofen tablets are contraindicated in patients with known hypersensitivity to ibuprofen. Ibuprofen tablets should not be given to patients who have experienced asthma, urticaria, or allergic-type reactions after taking aspirin or other NSAIDs. Severe, rarely fatal, anaphylactic-like reactions to NSAIDs have been reported in such patients [see WARNINGS, Anaphylactoid Reactions , and PRECAUTIONS, Preexisting Asthma ]. Ibuprofen tablets are contraindicated in the setting of coronary artery bypass graft (CABG) surgery [see WARNINGS ].

Adverse Reactions

The most frequent type of adverse reaction occurring with Ibuprofen tablets is gastrointestinal. In controlled clinical trials the percentage of patients reporting one or more gastrointestinal complaints ranged from 4% to 16%. In controlled studies when Ibuprofen tablets were compared to aspirin and indomethacin in equally effective doses, the overall incidence of gastrointestinal complaints was about half that seen in either the aspirin- or indomethacin-treated patients. Adverse reactions observed during controlled clinical trials at an incidence greater than 1% are listed in the table. Those reactions listed in Column one encompass observations in approximately 3,000 patients. More than 500 of these patients were treated for periods of at least 54 weeks. Still other reactions occurring less frequently than 1 in 100 were reported in controlled clinical trials and from marketing experience. These reactions have been divided into two categories: Column two of the table lists reactions with therapy with Ibuprofen tablets where the probability of a causal relationship exists: for the reactions in Column three, a causal relationship with Ibuprofen tablets has not been established. Reported side effects were higher at doses of 3200 mg/day than at doses of 2400 mg or less per day in clinical trials of patients with rheumatoid arthritis. The increases in incidence were slight and still within the ranges reported in the table. Incidence Greater than 1% (but less than 3%) Probable Causal Relationship Reactions occurring in 3% to 9% of patients treated with ibuprofen tablets. (Those reactions occurring in less than 3% of the patients are unmarked.) Precise Incidence Unknown (but less than 1%) Probable Causal Relationship Reactions are classified under "Probable Causal Relationship (PCR)" if there has been one positive rechallenge or if three or more cases occur which might be causally related. Reactions are classified under "Causal Relationship Unknown" if seven or more events have been reported but the criteria for PCR have not been met. Precise Incidence Unknown (but less than 1%) Causal Relationship Unknown GASTROINTESTINAL Nausea , epigastric pain , heartburn , diarrhea, abdominal distress, nausea and vomiting, indigestion, constipation, abdominal cramps or Pain, fullness of GI tract (bloating or flatulence) Gastric or duodenal ulcer with bleeding and/or perforation, gastrointestinal hemorrhage, melena, gastritis, hepatitis, jaundice, abnormal liver function tests; pancreatitis CENTRAL NERVOUS SYSTEM Dizziness , headache, nervousness Depression, insomnia, confusion, emotional liability, somnolence, aseptic meningitis with fever and coma (see PRECAUTIONS ) Paresthesias, hallucinations, dream abnormalities, pseudotumor cerebri DERMATOLOGIC Rash , (including maculopapular type), pruritus Vesiculobullous eruptions, urticaria, erythema multiforme, Stevens-Johnson syndrome, alopecia Toxic epidermal necrolysis, photoallergic skin reactions SPECIAL SENSES Tinnitus Hearing loss, amblyopia (blurred and/or diminished vision, scotomata and/or changes in color vision) (see PRECAUTIONS ) Conjunctivitis, diplopia, optic neuritis, cataracts HEMATOLOGIC Neutropenia, agranulocytosis, aplastic anemia, hemolytic anemia (sometimes Coombs positive), thrombocytopenia with or without purpura, eosinophilia, decreases in hemoglobin and hematocrit (see PRECAUTIONS ) Bleeding episodes (eg epistaxis, menorrhagia) METABOLIC/ ENDOCRINE Decreased appetite Gynecomastia, hypoglycemic reaction, acidosis CARDIOVASCULAR Edema, fluid retention (generally responds promptly to drug discontinuation) (see PRECAUTIONS ) Congestive heart failure in patients with marginal cardiac function, elevated blood pressure, palpitations Arrhythmias (sinus tachycardia, sinus bradycardia) ALLERGIC Syndrome of abdominal pain, fever, chills, nausea and vomiting; anaphylaxis; bronchospasm (see CONTRAINDICATIONS ) Serum sickness, lupus erythematosus syndrome. Henoch- Schonlein vasculitis, angioedema RENAL Acute renal failure (see PRECAUTIONS ), decreased creatinine clearance, poliuria, azotemia, cystitis, Hematuria Renal papillary necrosis MISCELLANEOUS Dry eyes and mouth, gingival ulcer, rhinitis Postmarketing Experience The following adverse reactions have been identified during postapproval use of ibuprofen. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. Skin and Appendages: Exfoliative dermatitis, Stevens- Johnson Syndrome (SJS), toxic epidermal necrolysis (TEN), and fixed drug eruption (FDE).

Drug Interactions

ACE-inhibitors Reports suggest that NSAIDs may diminish the antihypertensive effect of ACE-inhibitors. This interaction should be given consideration in patients taking NSAIDs concomitantly with ACE-inhibitors. Aspirin Pharmacodynamic studies have demonstrated interference with the antiplatelet activity of aspirin when ibuprofen 400 mg, given three times daily, is administered with enteric-coated low-dose aspirin. The interaction exists even following a once-daily regimen of ibuprofen 400 mg, particularly when ibuprofen is dosed prior to aspirin. The interaction is alleviated if immediate-release low-dose aspirin is dosed at least 2 hours prior to a once-daily regimen of ibuprofen; however, this finding cannot be extended to enteric-coated low-dose aspirin [see Clinical Pharmacology/Pharmacodynamics ]. Because there may be an increased risk of cardiovascular events due to the interference of ibuprofen with the antiplatelet effect of aspirin, for patients taking low-dose aspirin for cardio protection who require analgesics, consider use of a NSAID that does not interfere with the antiplatelet effect of aspirin, or non-NSAID analgesics, where appropriate. When Ibuprofen tablets are administered with aspirin, its protein binding is reduced, although the clearance of free Ibuprofen tablets is not altered. The clinical significance of this interaction is not known; however, as with other NSAIDs, concomitant administration of ibuprofen and aspirin is not generally recommended because of the potential for increased adverse effects. Diuretics Clinical studies, as well as post marketing observations, have shown that Ibuprofen tablets can reduce the natriuretic effect-of furosemide and thiazides in some patients. This response has been attributed to inhibition of renal prostaglandin synthesis. During concomitant therapy with NSAIDs, the patient should be observed closely for signs of renal failure [see PRECAUTIONS, Renal Effects ], as well as to assure diuretic efficacy. Lithium Ibuprofen produced an elevation of plasma lithium levels and a reduction in renal lithium clearance in a study of eleven normal volunteers. The mean minimum lithium concentration increased 15% and the renal clearance of lithium was decreased by 19% during this period of concomitant drug administration. This effect has been attributed to inhibition of renal prostaglandin synthesis by ibuprofen. Thus, when ibuprofen and lithium are administered concurrently, subjects should be observed carefully for signs of lithium toxicity. (Read circulars for lithium preparation before use of such concurrent therapy.) Methotrexate NSAIDs have been reported to competitively inhibit methotrexate accumulation in rabbit kidney slices. This may indicate that they could enhance the toxicity of methotrexate. Caution should be used when NSAIDs are administered concomitantly with methotrexate. Warfarin-type anticoagulants Several short-term controlled studies failed to show that Ibuprofen tablets significantly affected prothrombin times or a variety of other clotting factors when administered to individuals on coumarin-type anticoagulants. However, because bleeding has been reported when Ibuprofen tablets and other NSAIDs have been administered to patients on coumarin-type anticoagulants, the physician should be cautious when administering Ibuprofen tablets to patients on anticoagulants. The effects of warfarin and NSAIDs on GI bleeding are synergistic, such that the users of both drugs together have a risk of serious GI bleeding higher than users of either drug alone. H-2 Antagonists In studies with human volunteers, co-administration of cimetidine or ranitidine with ibuprofen had no substantive effect on ibuprofen serum concentrations.

Storage & Handling

Store at 20°C - 25°C (68° - 77°F) [see USP Controlled Room Temperature]. Avoid excessive heat 40°C (104°F).


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