What is Senokot Max Strength 12 years plus tablets? Senokot Max Strength Tablets 12 Years Plus is an effective laxative made with natural Senna Fruit (pods), standardised to contain a constant amount of active ingredient in each dose. It provides effective relief from short-term, occasional constipation. Laxatives do not affect the number of calories absorbed from food.   How to take Senokot Max Strength 12 Years Plus Adults, the elderly and children over 12 years of age: Swallow 1 tablet at night.  Do not take more than 1 tablet within any 24hr period. Always read the patient information leaflet.