Taking Claritin with alcohol can cause dizziness, drowsiness and increased risk for overdose, states RxList. According to MedlinePlus, signs of Claritin overdose include excessive drowsiness, headache, unusual body movements, and fast or pounding heartbeat. If overdose is suspected, it is best to contact poison control immediately for further instructions. If the patient is unconscious or not breathing, emergency medical attention is necessary.
According to MedlinePlus, Claritin, also known as loratadine, is an antihistamine used to relieve allergy symptoms such as sneezing, runny nose. and itchy eyes, throat and nose. It also relieves itching and redness associated with hives. Claritin works by blocking the action of a substance in the body called histamine, which causes allergic reactions. It is taken by mouth and is available in liquid or pill form.
MedlinePlus states that Claritin sometimes causes side effects such as headache, dry mouth, sore throat, mouth sores, nosebleed, nervousness, weakness, stomach problems, sleeping problems, and red or itchy eyes. Reporting these side effects to a doctor is recommended if they are severe or persist for an extended period. More serious side effects requiring immediate medical attention include itching, rash, hives, hoarseness, breathing or swallowing problems, swelling of any part of the body, and wheezing.