I have tested them one month. The taste I felt as comfortable yet, is just quite concentrated. Healthwise, I noticed no effect - I was still cold while repeatedly. But my hair and nails did it very well, I am unfortunately nails Kauer and was able to get my broken nails back under control, they have grown super. Even my hair got back more wealth. Unfortunately, the action lies after the month again. The vials contain a lot of acid, which was not well tolerated by me as neurodermatitis, my skin very flourished, so please note who is sensitive to acid should perhaps rather try the tablet form.