💊 Chemical information

Cebolla; Cipolla; Oignon; Zwiebel.

💊 Profile

Onion is the bulb of Allium cepa (Liliaceae). It has been reported to reduce platelet aggregation, lower serum cholesterol, and to enhance fibrinolysis. It has been used in preparations for the treatment of urinary-tract disorders and in topical preparations for scars and contractures.


Onion has been used in homoeopathic medicines under the following names: Cepa; Allium cepa; All. cepa.

Cardiovascular disease.

A review of controlled studies purporting to show beneficial effects of garlic and/or onion on cardiovascular risk factors found those studies to have severe methodological failings.1
1. Kleijnen J, et al. Garlic, onions and cardiovascular risk factors: a review of the evidence from human experiments with emphasis on commercially available preparations. Br J Clin Pharmacol 1989; 28: 535–44.


An onion bulb was used to treat the wound caused by a blue-spotted stingray (Dasyatis kuhlii).1 Pain relief occurred within 30 minutes.
1. Whiting SD, Guinea ML. Treating stingray wounds with onions. Med J Aust 1998; 168: 584.

💊 Preparations

Proprietary Preparations

Austral.: Mederma; Chile: Mederma†; Israel: Mederma; Malaysia: Mederma; Pol.: Alcep; Singapore: Mederma; USA: Mederma. Multi-ingredient: Arg.: Contractubex; Austral.: Garlic Allium Complex; Austria: Contractubex; Braz.: Contractubex; Cz.: Contractubex; Ger.: Contractubex; Hong Kong: Contractubex; Hung.: Contractubex; India: Contractubex; Indon.: Mederma; Ital.: Skarflex; Malaysia: Palmer’s Cocoa Butter Formula Scar Serum; Philipp.: Contractubex; Pol.: Alcepalan; Cepan; Cepasmel; Cepastil; Contractubex; Rus.: Contractubex (Контрактубекс); Singapore: Erase; Switz.: Contractubex.
Published May 08, 2019.