No significant interactions are known with these drugs. Caution is always advised with multiple medications. Speak with your physician and share any concerns you may have regarding drug interactions.
Although no harmful interactions with Loratidine/Claritin have been reported, there is a theoretical possibility of an interaction with the following drugs:
Antibiotics such as erythromycin...
Loratidine (Claritin, clarinex) is an antihistamine and may be taken with other cold medications that do not also contain antihistamines, but only have decongestants and cough supressants.