How do antihistamines interact with other medications?

Antihistamines are usually mixed with other decongestants and pain relievers. So you should examine every ingredient in your cold medication to rule out any possible interactions. Individuals using medications like sedatives, sleeping pills, or muscle relaxants should speak to their doctor before using an antihistamine. Antihistamines often cause drowsiness, which could be complicated by these medications.

Before taking this or any other medication, you should talk to your doctor about all of the possible interactions you may experience.