Caffeine + Diphenhydramine + Paracetamol + Phenylephrine is a combination of four medicines: Caffeine , Diphenhydramine , Paracetamol , and Phenylephrine, which relieves common cold symptoms. Diphenhydramine is an antiallergic which relieves allergy symptoms like runny nose, watery eyes and sneezing. Paracetamol is an analgesic (pain reliever) and an antipyretic (fever reducer). It blocks the release of certain chemical messengers in the brain that are responsible for pain and fever. Caffeine increases the effectiveness of paracetamol and decreases sleepiness caused by diphenhydramine. Phenylephrine is a decongestant which narrows the small blood vessels providing temporary relief from congestion or stuffiness in the nose.

Nausea, Vomiting, Stomach pain/epigastric pain, Insomnia (difficulty in sleeping), Restlessness, Allergic reaction, Sleepiness, Dizziness, Impaired coordination, Thickened respiratory tract secretions, Headache

Caffeine+Diphenhydramine+Paracetamol+Phenylephrine is a combination of four medicines: Paracetamol, Caffeine, Diphenhydramine, and Phenylephrine.