What does CHK stand for?

“CHK stands for Clinical Health and Knowledge. CHK Nutrition is more than a name. It is a promise to provide the highest quality products and information supported by scientific and clinical research.


How long has CHK Nutrition been in business?

Our company was established in 2005, but it evolved from clinical research started in 1995. In 1999, the NeuroReplete formulation was established. At the time, the early CHK Nutrition founders hired a company that provided products for a number of well-known brands to manufacture and distribute our patented formulas. However, the lack of direct control meant that it was difficult to guarantee the quality and availability of the products, the reliability of service, and the selection of specialized ingredients (such as our naturally sourced 40% Mucuna Pruriens). By taking control of our manufacturing and distribution, we have been able to hold to our original vision of offering healthcare professionals scientifically researched and clinically supported nutritional products sourced from the highest quality ingredients.

Have CHK Nutrition’s Amino Acid Formulations been clinically tested?

Yes, CHK Nutrition’s Amino Acid Formulations have been tested in pre-clinical and clinical studies.


Where are these scientific studies found?

Peer-reviewed scientific studies testing CHK Nutrition’s amino acid formulas can be found in the following journals, as well as on PubMed and Dove Press websites:

  1. Neuropsychiatric Disease and Treatment” (Multiple Studies)
  2. “Book: Food and Nutrients in Disease Management”
  3. “Open Access Journal of Urology”(Multiple Studies)
  4. “Neuropsychiatric Disease and Treatment” (Multiple Studies)
  5. “Clinical and Experimental Gastroenterology”
  6. “International Journal of General Medicine” (Multiple Studies)
  7. “International Journal of Nephrology and Renovascular Disease”
  8. “Healthcare and Patient Safety”(Multiple Studies)
  9. “Clinical Pharmacology: Advances and Applications” (Multiple Studies)

Please note: These studies are intended to support structure-functions claims made regarding CHK Nutrition’s products. The studies may involve findings that discuss uses that go outside CHK Nutrition’s product labeling and product structure-function claims. This information is NOT presented to make drug claims about CHK Nutrition’s products. The intent of providing this information is to disseminate the scientific literature currently available about the CHK Nutrition products and the structure-function claims that we offer. Please read these studies to understand the strengths and limitations of the data.

Important: These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not intended to diagnose, treat, cure, mitigate, or prevent any disease.


Where is CHK Nutrition located?

CHK Nutrition is located at 3930 East Calvary Rd in Rice Lake, which is just outside of beautiful Duluth. In the last 7 years, we have moved twice, taking us from a cramped four room office to a spacious office with a warehouse.


Are CHK Nutrition’s products manufactured in the United States?

Yes, CHK Nutrition’s products are manufactured in the US.


I am having trouble swallowing the capsules, can I open them up?

Yes, you certainly can. We do not recommend opening CysReplete capsules as they are sulfur based, which results in a very strong, unpleasant smell and taste.

For the remaining amino acid products, they can be mixed with any cold, cool or warm food or drink. We do not have research indicating whether or not the efficacy would change due to heat exposure. It is important that you consume the entire mix to get the full dose.


With what can I mix my Mucuna Powder, Tyrosine Powder, or opened capsules?

You can mix any of CHK Nutrition’s Amino Acids with anything you eat or drink as long as it is not too hot and you consume all of what you have mixed them in.

We do not recommend opening CysReplete capsules as they are sulfur based, which results in a very strong, unpleasant smell and taste.


Can the amino acids be mixed with hot items – such as coffee, soup, or baked into a meal?

For items over 200 degrees Fahrenheit, we have no research indicating whether or not the efficacy would change due to the heat. We have anecdotal reports that people felt the integrity of the products were maintained in hot items but nothing to support these assertions. If you do mix the products with hot items, be certain to consume everything you have mixed them in.