IP 466 Pill Identification
The tablet imprinted with IP 466 is a prescription nonsteroidal anti-inflammatory drug (NSAID). It is a generic formulation equivalent to brand-name Motrin 800 mg or Advil 800 mg.
Attribute Specification
- Active Ingredient – Ibuprofen (800 mg)
- Appearance – White to off-white, capsule-shaped (oval) film-coated tablet
- Imprint – “IP 466” on one side, plain or bisected on the reverse
- Manufacturer – Amneal Pharmaceuticals
- Drug Class – Nonsteroidal Anti-inflammatory Drug (NSAID)
- DEA Schedule – Non-controlled prescription drug
Mechanism of Action
Ibuprofen produces its anti-inflammatory, analgesic (pain-relieving), and antipyretic (fever-reducing) effects primarily through the non-selective inhibition of cyclooxygenase enzymes:
- COX-1 and COX-2 Inhibition: Ibuprofen inhibits both cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2) enzymes.
- Prostaglandin Suppression: These enzymes synthesize prostaglandins from arachidonic acid. Prostaglandins act as key mediators of inflammation, pain signaling, and fever in response to tissue injury or disease.
- Targeted Relief: By stopping prostaglandin production, IP 466 reduces localized swelling, lowers the pain threshold sensitization of peripheral nociceptors (pain receptors), and resets the hypothalamic thermostat to lower fever.
Therapeutic Indications & Dosage
Standard Uses
Prescribed for the treatment of moderate-to-severe inflammatory pain, including:
- Osteoarthritis and Rheumatoid Arthritis
- Severe dysmenorrhea (menstrual cramps)
- Acute musculoskeletal disorders, sprains, or post-surgical dental/orthopedic pain
Standard Dosage Guidance
- Adult Dosage: Typically 800 mg (1 tablet) orally every 6 hours or every 8 hours as needed.
- Maximum Daily Limit: Do not exceed 3,200 mg per day (a maximum of 4 tablets of 800 mg in a 24-hour window) under medical supervision.
- Administration: Take with food, milk, or an antacid to reduce gastric irritation and minimize stomach upset.
Side Effects
Common Side Effects
- Gastrointestinal upset (nausea, heart burn, stomach pain, gas)
- Dizziness or mild headache
- Fluid retention or minor swelling in ankles/feet
- Tinnitus (ringing in the ears) at higher systemic concentrations
Severe Side Effects (Seek Immediate Medical Care)
- GI Bleeding: Dark/tarry stools, coughing up blood, or “coffee-ground” vomit
- Cardiovascular Events: Chest pain, shortness of breath, sudden weakness or numbness on one side of the body, slurred speech
- Renal Impairment: Sudden drop in urination frequency or volume, severe fluid retention
- Hypersensitivity / Severe Skin Reactions: Hives, facial swelling, difficulty breathing, or severe skin rash with peeling (such as Stevens-Johnson syndrome)
FDA Boxed Warnings & Major Risks
- Cardiovascular Risk: NSAIDs cause an increased risk of serious cardiovascular thrombotic events, including myocardial infarction (heart attack) and stroke, which can be fatal. This risk may occur early in treatment and may increase with duration of use.
- Contraindication: IP 466 is strictly contraindicated for perioperative pain management in the setting of coronary artery bypass graft (CABG) surgery.
- Gastrointestinal Risk: NSAIDs cause an increased risk of serious gastrointestinal (GI) 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 GI events.
Critical Precautions & Drug Interactions
- Kidney Health: Long-term administration of NSAIDs can result in renal papillary necrosis and other renal injuries. Caution is required in patients with pre-existing renal impairment, heart failure, or liver dysfunction.
- Aspirin / Blood Thinners: Taking IP 466 with anticoagulants (e.g., warfarin) or antiplatelet agents increases the risk of severe GI bleeding. Ibuprofen can also interfere with the antiplatelet effect of low-dose aspirin taken for cardioprotection.
- BP & Heart Medications: NSAIDs can diminish the antihypertensive efficacy of ACE inhibitors, ARBs, and beta-blockers.
- Pregnancy Warning: Avoid use of ibuprofen at 20 weeks or later in pregnancy, as it can cause rare but serious kidney problems in the unborn baby, leading to low amniotic fluid (oligohydramnios), or premature closure of the ductus arteriosus in the fetus.