Larofen (Ibuprofen)

Ibuprofen, a topical NSAID, acts on the prostaglandin‑mediated inflammatory pathway to provide analgesic, antipyretic, and anti‑inflammatory effects.

• Mild to moderate pain: Provides symptomatic relief of headaches, dental pain, minor injuries, and other everyday aches.
• Inflammation reduction: Decreases swelling and redness in joints, muscles, and soft‑tissue injuries.
• Fever reduction: Lowers elevated body temperature when applied to the skin.
• Musculoskeletal discomfort: Alleviates pain and stiffness associated with strains, sprains, and overuse injuries.

• Ibuprofen reversibly inhibits cyclooxygenase‑1 (COX‑1) and cyclooxygenase‑2 (COX‑2) enzymes in peripheral tissues. This inhibition reduces the conversion of arachidonic acid to prostaglandins, which are mediators of pain, fever, and inflammation. By lowering prostaglandin levels locally at the site of application, the topical product diminishes nociceptor activation and vascular inflammation, resulting in analgesic, antipyretic, and anti‑inflammatory effects.

Topical ibuprofen may cause local skin reactions and, in rare cases, systemic adverse events.

Common Side Effects

• Skin irritation: Redness, itching, or mild burning at the application site.
• Dryness: Peeling or flaking of the treated skin.
• Pruritus: Persistent itching that may worsen with repeated use.
• Local swelling: Minor edema around the area of application.
• Sensation of warmth: Transient feeling of heat after rubbing in the product.

Serious or Rare Side Effects

• Allergic reactions: Rash, hives, or angioedema requiring medical attention.
• Severe skin disorders: Stevens‑Johnson syndrome or toxic epidermal necrolysis.
• Systemic toxicity: Gastrointestinal ulceration, renal impairment, or hepatic dysfunction if absorbed in large amounts.
• Cardiovascular events: Increased risk of heart attack or stroke in susceptible individuals.
• Blood disorders: Unexplained bruising or bleeding.
• Severe hypersensitivity: Anaphylaxis, a life‑threatening allergic response.

When using topical ibuprofen, consider the following safety measures.

• Assess skin integrity: Avoid application on broken, infected, or irritated skin.
• Limit area: Do not cover more than 10% of body surface with a single application.
• Duration of use: Restrict continuous use to the period recommended by a healthcare professional, typically not exceeding 7‑10 days without review.
• Concomitant NSAIDs: Use caution if other NSAIDs are taken systemically to reduce risk of additive toxicity.
• Underlying conditions: Patients with asthma, cardiovascular disease, renal or hepatic impairment should consult a clinician before use.
• Store at ambient temperature: Keep below 25 °C, in the original packaging, protected from moisture and direct sunlight.

Topical ibuprofen can interact with other medicines, especially those affecting coagulation or renal function.

Major Interactions (Avoid)

• Anticoagulants (e.g., warfarin, direct oral anticoagulants): Increased bleeding risk.
• Systemic NSAIDs or aspirin: Additive gastrointestinal and renal toxicity.
• Corticosteroids (systemic or high‑potency topical): Heightened risk of skin ulceration and delayed wound healing.
• Lithium: Potential for increased lithium serum levels.
• Methotrexate: Enhanced methotrexate toxicity due to reduced renal clearance.

Moderate Interactions (Monitor Closely)

• ACE inhibitors or ARBs: Possible reduction in renal function, especially in dehydrated patients.
• Diuretics: May potentiate renal adverse effects.
• Antihypertensives: NSAID‑induced sodium retention can blunt blood‑pressure control.
• SSRIs or SNRIs: Slightly increased bleeding tendency.
• Alcohol: Combined use may irritate the skin and increase systemic NSAID exposure.