Anadin Extra Caplets Anadin Extra Caplets contain a powerful triple action formula for fast, effective relief from mild to moderate pain including headache, migraine, neuralgia, toothache, sore throat, period pains & symptomatic relief of sprains, strains, rheumatic pain, sciatica, lower back pain (lumbago), muscular aches & pains, joint swelling & stiffness, influenza, feverishness & feverish colds. Anadin Extra Caplets contain three active ingredients: Aspirin: Targets the source of the pain, has anti-inflammatory properties & reduces high temperature & fever. Paracetamol: Helps block pain signals & reduces high temperature & fever. Caffeine: Helps speed up pain relief.