Non-inferiority Clinical Trial of Dexchlorpheniramine (Cream Versus Gel) in the Relief of Sunburn Related Symptoms

Topical antihistamines can be used to promote relief of sunburn related symptoms (erythema, itch and burning sensations). Dexchlorpheniramine maleate 1% cream is a topical antihistamine formulation approved by ANVISA in Brazil for the relief of skin irritation and pruritus, including the ones caused by sunburn. The aim of the present study is to demonstrate non-inferiority of a new pharmacological preparation of dexchlorpheniramine maleate (1% gel) with the standard preparation (1% cream) for the relief of sunburn related symptoms and to demonstrate the safety of both preparations.