...Caffeine Is Often Added To Medications As A Catalyst Though, Isn't It... (?) ...From My Much Brighter Associate... Caffeine is added to medications as an adjuvant (a booster) to enhance the pain-relieving power of common analgesics like paracetamol, aspirin, and ibuprofen, particularly for headaches and migraines. It helps the body absorb the active drug faster and provides an extra boost against pain. Why Caffeine is Added Boosts Pain Relief: It makes basic painkillers work better for more people. Speeds Absorption: It helps the main medicine get into your system faster. Constricts Blood Vessels: In migraine and headache formulas, it helps narrow swollen blood vessels in the brain. Common Uses Over-the-counter migraine and tension headache pills Some combination cold and flu formulas ***