Ibuprofen Drug Profile

What is Ibuprofen?

Ibuprofen is a widely used nonsteroidal anti-inflammatory drug (NSAID) that reduces pain, fever, and inflammation throughout the body. It belongs to the propionic acid class of NSAIDs and is available both over-the-counter and by prescription in higher strengths. Ibuprofen is commonly used to treat conditions ranging from headaches and muscle pain to arthritis and menstrual cramps.

Uses

Ibuprofen has several documented therapeutic applications:

• Pain relief: Effective for mild to moderate pain including headaches, dental pain, muscle aches, and back pain
• Fever reduction: Commonly used to lower elevated body temperature in adults and children
• Inflammatory conditions: Helps reduce swelling and inflammation in conditions like arthritis, sprains, and strains
• Menstrual pain: Provides relief from dysmenorrhea (painful menstrual periods) by reducing uterine contractions
• Post-operative pain: Often prescribed to manage pain following minor surgical procedures

How it works

Ibuprofen works by blocking the action of cyclooxygenase (COX) enzymes, specifically COX-1 and COX-2, which are responsible for producing prostaglandins in the body. Prostaglandins are chemical messengers that promote inflammation, pain, and fever at injury sites. By reducing prostaglandin production, ibuprofen effectively decreases pain signals, lowers fever, and reduces inflammatory responses.

Side effects

Common side effects include:

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• Stomach upset or nausea
• Heartburn or indigestion
• Dizziness
• Headache
• Drowsiness
• Mild skin rash
• Fluid retention
• Constipation or diarrhea

Serious side effects requiring immediate medical attention:

• Signs of gastrointestinal bleeding (black, tarry stools or vomiting blood)
• Severe allergic reactions including difficulty breathing or facial swelling
• Chest pain or signs of heart problems
• Severe kidney problems (decreased urination, swelling)
• Liver damage symptoms (yellowing of skin or eyes, dark urine)

Warnings and precautions

• Cardiovascular risk: Long-term use may increase risk of heart attack and stroke, particularly in people with existing heart disease
• Gastrointestinal concerns: Can cause stomach ulcers and bleeding, especially in elderly patients or those with a history of peptic ulcers
• Kidney function: Should be used cautiously in patients with kidney disease, as it can worsen kidney function
• Pregnancy considerations: Generally avoided during pregnancy, especially in the third trimester, as it may cause complications for both mother and baby
• Age restrictions: Not recommended for infants under 6 months of age without specific medical supervision

Interactions

Ibuprofen can interact with several medications and supplements:

• Warfarin and blood thinners: Increases bleeding risk when combined with anticoagulant medications
• ACE inhibitors and ARBs: May reduce effectiveness of blood pressure medications and increase kidney damage risk
• Lithium: Can increase lithium levels in the blood, potentially causing toxicity
• Methotrexate: May increase methotrexate toxicity by reducing its elimination from the body
• Aspirin: Combination may increase gastrointestinal bleeding risk and reduce aspirin’s heart-protective effects
• Corticosteroids: Increases risk of stomach ulcers and bleeding when used together
• Diuretics: May reduce the effectiveness of water pills and affect kidney function
• Alcohol: Increases risk of stomach irritation and liver damage

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Dosage

Typical adult dosages for ibuprofen vary based on the condition being treated. For over-the-counter use, the standard dose is 200-400 mg every 4-6 hours as needed, not exceeding 1,200 mg in 24 hours unless directed by a healthcare provider. Prescription strengths may range from 400-800 mg taken 3-4 times daily, with maximum daily doses typically not exceeding 3,200 mg. For children, dosing is based on weight and age, typically 5-10 mg per kilogram of body weight every 6-8 hours. It is important to take ibuprofen with food or milk to reduce stomach irritation, and dosage should always be determined by a healthcare provider based on individual medical needs and conditions.

Sources: FDA DailyMed drug labels (public domain), BNF, WHO Essential Medicines List. This article is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before starting or stopping any medication.

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