Fruits may be used as drug. Every part of fruit has medicinal/pharmacological property. Leaves, stem, fruits and fruit peels all have such chemicals which may be used in pharmacology because all of them have pharmacological active compounds. Fruit peels have very less side effects. Mango, orange, pomegranate and apple peels have pharmacologically active compounds which may be used for the treatment of various types of cancers and also as anti-inflammatory and antimicrobial agents.
Faiza Hassan. Pharmacological evaluation of fruit peel. International Journal of Pharmaceutical Science and Research, Volume 1, Issue 1, 2016, Pages 37-39