Question: do sudafed and benadryl work the same?
Answer: Sudafed is also used to relieve nasal congestion due to the common cold. Benadryl and Sudafed belong to different drug classes. Benadryl is an antihistamine and Sudafed is a decongestant. Benadryl and Sudafed are available in generic form and over-the-counter (OTC).