Vicks Sinex Decongestant Caps 10 Relief of symptoms of colds & influenza, including aches & pains, headache, nasal congestion sinus pain & feverishness. Green & white capsule containing: Paracetamol 500 mg Phenylephrine hydrochloride 12.18 mg Dosage: Over 12 years only: 1 capsule to be taken every 4 hours. Maximum 4 capsules in 24 hours. Under 12 years: not to be given.