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Why you'll want to make Tryptopure your choice

Tryptopure is tryptophan from Ajinomoto, the global leader in the research, production, and sales of amino acids.

Until recently Ajinomoto only sold Tryptopure for medical use through doctors, hospitals, and other professional health care facilities. Tryptopure is widely used in intravenous solutions, infant formulas, and other specialty medical products. Many pharmaceutical companies use Tryptopure in the development and manufacture of their prescription medications.

In short, Tryptopure is the most trusted tryptophan available. It's not only produced by the world's leading maker of amino acids—Ajinomoto—it's also the purest tryptophan available.

Ajinomoto was one of the first to make pharmaceutical-grade amino acids; we literally invented the process. Tryptopure is only manufactured via fermentation from vegetable sources, and it's between 99% and 100% pure. Most other brands don't come close—the level of impurities in tryptophan from other makers can be as much as six times higher.

In fact, from 1989 to 2006 the FDA was so concerned about the quality of tryptophan coming into the U.S., that it instituted an import ban with one exception: Ajinomoto's Tryptopure.

Tryptophan can be an excellent supplement to your diet, especially to promote more restful sleep and a brighter mood. So get the purest tryptophan available—Tryptopure. Look for the Tryptopure name on the bottle or ask your pharmacist for product containing Tryptopure from Ajinomoto.

And be sure to talk with your doctor about using Tryptopure. Tryptopure is not a drug but you should always let your physician know about any supplements you may take.


Look for the Tryptopure name on the bottle or ask your pharmacist for product containing Tryptopure from Ajinomoto.

It's important to note that you should talk with your physician about using Tryptopure. Tryptopure is not a drug but your physician should know of any and all supplements you are taking.