Beechams Flu Plus Caplets Beechams Flu Plus Caplets provide effective relief from the major cold & flu symptoms, including headache, shivers, aches & pains, blocked nose & painful sinuses, catarrh, sore throat, fatigue & tiredness. They contain three active ingredients: Paracetamol: a painkiller that also reduces your temperature when you have a fever. Phenylephrine hydrochloride: unblocks your nose & sinuses helping you to breathe more easily. Caffeine: a mild stimulant to relieve fatigue & tiredness. Beechams Flu Plus Caplets are suitable for adults & children from 12 years.