Mechanism of action of camphorcamphor acts as a rubefacient when it is rubbed on the skin and causes localized vasodilatation- which gives feelings of comfort and warmth. when applied gently on the skin, it acts as an anti-pruritic agent and creates a feeling of coolness, and a mild local anaesthetic effect and relieves itching. when ingested in small amounts, it creates feelings of warmth and comfort in the epigastrium. camphor acts as a local anesthetic on the respiratory passageways and causing cough suppression.pharmacokinets of camphorabsorption: well absorbed through the skin, distribution: widely distributed in the body and crosses the placenta, metabolism: metabolized in liver, excretion: excreted mainly through urine and a minor portion is excreted through lungs.