L-Tryptophan is an essential amino acid. Amino acids are the molecules that our bodies use to build proteins and perform other essential functions in the body.

We can finish the label with your OEM bottle, if you are interested in it.

Our Nutrition Factory was established in May 2010. We are a professional supplier specializing in OEM customization, capsules, gummies, vitamins, amino acids, and nutritional supplements. It has absolute advantage because of strong research strength, modern management system and high-quality marketing team.

Now we have 3 GMP standard workshops. Meanwhile, the factory is equipped with a research and quality inspection center, backed by robust technology research and development strength. We also have 3 sales departments with over 30 professionals, serving markets worldwide.

To meet customer needs, OEM service is fully supported. If you have a promising concept for a new product but require laboratory development and resource support, we are equipped to support you. We sincerely look forward to strengthening partnerships with customers from all regions.