As a connoisseur of the effect of L-tryptophan (it take for 7 months and can since 1995 by sleep), I dschte, the offer would be great. Featuring reputable, the company makes a good impression, so I buy it. Came within 3 days a can, not as pictured. Tagless without information on additives, etc. Only a small sticker with bar code and still less the word L-tryptophan plan. Serious I do not find that. In the previous company everything was great!