tigosol is a power product consisting of 3 different active ingredients, the sun vitamin D, green tea and the special bacterium Bacillus subtilis. If you want to increase your vitamin dosage in grey rainy weather, you should start using tigosol. We are really impressed with this product and also very enthusiastic about the concept behind it. With the lozenges we get our daily dose of vitamin D and we are very happy with it. Especially during the dark season of the year.