1. Contact and photocontact dermatitis to benzydamine hydrochloride;Ikemura I.;Japanese Journal of Clinical Dermatology,1971
2. Photodermatitis from benzydamine
3. The Merck Index 9th edition. Rahway NJ USA :Merck and Co. Inc. 1976:147–148.
4. Evidence from two classic irritation tests for an anti-inflammatory action of a natural extract, Echinacina B