1. Look at who "stands behind" the product. This means who manufactures it and especially who formulated it. The author of the product and the manufacturer should have full control over the quality of production.
2. Ask the seller how the manufacturer of their product guarantees the use of the correct herbs. If the manufacturer refers to TCM (Traditional Chinese Medicine), ask how the manufacturer identifies and checks the authenticity and quality of herbs used according to TCM principles at the input.
3. It is important to know if doctors have experience with the dietary supplement.
4. It is important to know how long people have experience with its use.
5. Ask if the manufacturer has conducted clinical trials for their dietary supplement, proving its effects on the human body with evidence.
6. Ask to see documents proving the research and development of your supplement's manufacturer (registered patent for production technology, defended public grant for quality standards). This gives you the assurance that your manufacturer's claims about effects, safety, and production quality are substantiated!
7. To guarantee the effects and safety of dietary supplements, it is important for the manufacturer to be able to ensure repeatability of quality and the same composition in every bottle, produced at different time periods (this is also a condition for the feasibility of clinical trials).

Mixing a blend of "some" herbs is no art. But the great art is choosing their composition and mutual ratio appropriately, which only someone dealing with this issue for several decades can do. The founder of the field of herbal mixtures in the world, Mr. Albert Y. Leung Ph.D., is a world-renowned expert on herbs and their processing. In the field of research and development of Chinese herb standards, he is the author of Phyto True™ technology, now in the patent process. Therefore, his above-mentioned experience can definitely help you when choosing the right herbal dietary supplements.