LESON COLD

MOA: Phenylephrine: α₁‑adrenergic agonist which causes vasoconstriction of nasal blood vessels that result in the reduce nasal congestion. Chlorpheniramine: Blocks H₁ histamine receptors which reduces sneezing, runny nose, and itching Paracetamol: • Acts on the central nervous system • Inhibits prostaglandin synthesis thus reduces pain and fever