Beechams Flu Plus Caplets provide relief from sinus pain and the symptoms of colds and flu, including fatigue and drowsiness. Here's how the key ingredient work: 

• Paracetamol: This ingredient acts as a pain reliever and fever reducer, helping to alleviate aches, pains, and fever associated with colds and flu.
• Phenylephrine hydrochloride: This decongestant helps to clear blocked nasal passages and sinuses, making it easier to breathe
• Caffeine: Caffeine acts as a mild stimulant, helping to combat fatigue and drowsiness and improve alertness.