The most important thing to know first: There are no Stevia sweetener tablets that are 100% Stevia. Do not be fooled by such offers. The maximum value is usually between 12% and 25%. For the production of sweetener tablets, you always need so-called carrier and tableting aids. Without these, the production of tablets is not possible.
The most commonly used excipients are: Sorbitol, lactose (milk sugar), carboxymethyl cellulose, isomaltose, erythritol, sodium hydrogen carbonate or dextrose.
Addition of flavours: Stevia tablets are often made with flavours, especially vanilla flavours. The addition can often be an indicator that high-quality Stevia extracts are not used in the production process. These are primarily used to mask the taste, sweetness.