Never, ever mix alcohol and sleeping pills. If the sleeping pill causes excessive daytime sleepiness, discontinue its use. Antihistamines are often found in medications used to treat the common cold and allergies. As a result, many people use these these medications to help them sleep. However, it is easy to build up a tolerance to antihistamines.
Antihistamines also cause daytime drowsiness which can impair our performance.
They can also cause allergic reactions and they may not mix well with medications. Taking antihistamines with alcohol can also be harmful. The Centre for Sleep and Dream Studies, Ottawa, Canada. All rights reserved.