Sudafed Congestion & Headache Relief Sudafed Congestion & Headache Capsules provide non-drowsy pain relief from the symptoms of pain & congestion caused by sinusitis. Ingredients The active ingredients are Paracetemol, Phenylephrine & Caffeine. Directions Adults & children over 12 years: take 2 capsules every 4 hours hours as required. Do not take more than 8 capsules in 24 hours. Children aged 6-12: take one capsule every 4 hours as required. Do not take more than 4 capsules in 24 hours. Do not give to children under 6 years of age.