Allergen

An allergen was any substance that could cause an allergic reaction. 
In 2377, The Doctor gave Neelix something to counteract any allergens he might encounter in the atmosphere of a planet he was about to visit. ()
==Known allergens==
* Bee venom 
* Benzethonium chloride
* Chocolate
* Icoberry juice
* Inkarian wool
* Insect bites
* Leola ointment
* Metorapan
* Retinax V
* Water
* Viscoelastic polyurethane foam
==External link==
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Category:Materials
Category:Medicine