The word bruh is slang. It can mean really or sometimes bro. Their  is the possessive pronoun of them or themselves.   They're is a contraction or shortening of 'they are'.   . Their means belonging to people or things previously mentioned or  easily identified (Your parents do not look similar, except for  their noses).
Claritin is an antihistamine. It blocks histamine, a chemical that causes congestion, itching, and other allergic reactions. Antihistamines can also make you sleepy, but Loratadine is a low-drowsiness version. Claritin D is a combination medicine for allergies. Loratadine (an antihistamine) prevents allergy symptoms like runny nose, sneezing, and itchy eyes or skin.
Claritin (loratadine) is an antihistamine medication that is used to treat allergy symptoms. Claritin is available as a generic drug, called loratadine. Claritin blocks the action of histamine, a substance in the body that initiates allergic symptoms like itching, sneezing, runny nose, and allergic skin rashes.ur Claritin Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication. This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.