Beechams Max Strength All in One Capsules Beechams Max Strength All in One Capsules relieve the symptoms of cold & flu & the pain of sinusitis, including aches & pains, headache, blocked nose, sore throat, chills & feverishness. They also loosen stubborn mucus (phlegm) & provide relief from chesty coughs. Beechams Max Strength All in One Capsules contain three active ingredients: Paracetamol: a painkiller which also reduces your temperature when you have a fever. Guaifenesin: an expectorant which loosens phlegm & relieves chesty coughs. Phenylephrine hydrochloride: a decongestant which unblocks your nose & sinuses, helping you to breathe more easily. Beechams Max Strength All in One Capsules are suitable for adults & children from 12 years.