The research was started in 1995, the formulations became available in 1999. Our original research focused on creating a formulation that could support brain health in a way that was reproducible. For over 20 years, providers in the United States (and around the world) have used our comprehensively researched formulations to support their patients’ brain, gut, and overall health.
CHK Nutrition’s amino acid products support normal brain, gut and overall health by providing balanced amino acid nutrients which support serotonin, dopamine, norepinephrine and epinephrine.

CHK Nutrition
CHK NUTRITION Mucuna 40% (Mucuna Pruriens) Capsules
Sale price$80.00
Excluding sales tax | Free 2–5 day delivery

CHK Nutrition
CHK NUTRITION Mucuna 40% (Mucuna Pruriens) Powder
Sale price$270.00
Excluding sales tax | Free 2–5 day delivery

CHK Nutrition
CHK NUTRITION NeuroReplete LT 240 Capsules
Sale price$99.00
Excluding sales tax | Free 2–5 day delivery

CHK Nutrition
CHK NUTRITION CysReplete LT 180 Capsules
Sale price$54.00
Excluding sales tax | Free 2–5 day delivery

CHK Nutrition
CHK NUTRITION RepleteExtra LT 120 Capsules
Sale price$80.00
Excluding sales tax | Free 2–5 day delivery

CHK Nutrition
CHK NUTRITION Tyrosine Powder
Sale price$149.00
Excluding sales tax | Free 2–5 day delivery

CHK Nutrition
CHK NUTRITION Vitamin B-6 100mg, 100 Count Tablet
Sale price$29.00
Excluding sales tax | Free 2–5 day delivery
