Otipax (Phenazone, Lidocaine Hydrochloride)

Otipax combines phenazone and lidocaine to address ear‑related pain pathways. It is indicated for:

• Otitis externa: reduces pain and discomfort during inflammation.
• Ear canal irritation after swimming or water exposure : alleviates burn and tingling sensation.
• Minor trauma to the external ear : eases pain and facilitates healing.
• Post‑procedural ear care after auricular clean‑up : provides local analgesia.
• Chronic ear dry skin : moistur soothing effect and symptom relief.

• Phenazone acts as a non‑opioid analgesic that inhibits prostaglandin synthesis, reducing inflammation‑mediated pain signals. Lidocaine hydrochloride blocks voltage‑gated sodium channels in peripheral nerve membranes, preventing the initiation and propagation of nociceptive impulses, thereby providing rapid local anaesthesia in the treated area.

Otipax may cause a range of adverse reactions, most of which are mild and reversible.

Common Side Effects

• Mild burning sensation at the application site.
• Transient itching or redness.
• Slight ear fullness.
• Temporary taste alteration.
• Minor dizziness.
• Localized swelling.

Serious or Rare Side Effects

• Allergic dermatitis or severe skin reaction.
• Persistent otitis media.
• Significant hearing loss.
• Systemic toxicity from lidocaine absorption.
• Anaphylaxis.
• Unexplained severe vertigo.

Before using Otipax, consider the following safety measures:

• Allergy assessment: verify the presence of any known phenazone or lidocaine hypersensitivity.
• Ear condition review: ensure the ear is intact and free of perforation.
• Pediatric use: limit use in children under the recommended age by the prescriber.
• Concomitant otic medications: avoid simultaneous use with other ototoxic preparations.
• Pregnancy & lactation: use only if clearly indicated by the healthcare professional.
• Store at ambient temperature: keep in the original container, protect from moisture and direct sunlight.

Otipax can interact with other medicines applied to the ear or systemically absorbed agents.

Major Interactions (Avoid)

• Concurrent use of other topical anesthetics: may increase local lidocaine exposure.
• Ototoxic antibiotics (e.g., aminoglycosides): heightened risk of ear toxicity.

Moderate Interactions (Monitor Closely)

• Systemic lidocaine therapy: additive sodium‑channel blockade.
• CYP enzyme modulators that affect phenazone metabolism.
• Anticoagulants: potential for altered bleeding if ear trauma occurs.
• Alcohol consumption: may enhance systemic absorption of phenazone.
• Herbal supplements such as ginkgo biloba that affect platelet function.