Most of the side effects of the drugs are not due to an allergic reaction. For example, aspirin can cause hives or trigger asthma without involving the immune system. Many people mistake an unpleasant, but not serious, side effect of a drug with a drug allergy. Allergy can occur for several reasons. Medsshop.co Pharmacy offers the best allergy medicines online like Alerid 10mg, Azee 1000mg, Azithromycin Eye Drop 3ml and Ciplatin 4mg etc. This medication helps you to better manage your allergy.