Carlson® Glycine Amino Acid Powder

Carlson® Glycine Amino Acid Powder - CARLSON LABS - GNC Zoom
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Item #686457

Size: 3.53 oz.

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Product Information


Amino Acid Powder
Promotes Energy Production
Glycine is an amino acid found to promote the development of muscle.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.


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Supplement Facts

Serving Size 1/2 teaspoon(s)
Servings Per Container 50
Amount Per Serving % DV
Glycine 2.00 g **
** Daily Value (DV) not established

Product Directions / Additional Info

Take one level green scoopful daily mixed into food or liquid which supplies 2 g of glycine. Keep bottle tightly closed. Store away from heat and moisture.

Storage Instructions: Keep tightly closed in a dry place, do not expose to excessive heat

Warning: Do not take if pregnant or lactating. If taking prescription drugs, consult with your health care practitioner.


Statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.

Dist. by Carlson Division of J.R. Carlson Laboratories, Inc.Arlington Heights, IL 60004

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Health Notes


This nutrient has been used in connection with the following health goals
  • Reliable and relatively consistent scientific data showing a substantial health benefit.
  • Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit.
  • For an herb, supported by traditional use but minimal or no scientific evidence. For a supplement, little scientific support.

Our proprietary "Star-Rating" system was developed to help you easily understand the amount of scientific support behind each supplement in relation to a specific health condition. While there is no way to predict whether a vitamin, mineral, or herb will successfully treat or prevent associated health conditions, our unique ratings tell you how well these supplements are understood by the medical community, and whether studies have found them to be effective for other people.

For over a decade, our team has combed through thousands of research articles published in reputable journals. To help you make educated decisions, and to better understand controversial or confusing supplements, our medical experts have digested the science into these three easy-to-follow ratings. We hope this provides you with a helpful resource to make informed decisions towards your health and well-being.

This supplement has been used in connection with the following health conditions:

Dose: 0.8 grams for every 2.2 lbs (1 kg) of body weight under medical supervision
Supplementing with glycine appears to help improve depression and mental symptoms and may reduce symptoms in people unresponsive to drug therapy.(more)
Dose: 0.8 grams for every 2.2 lbs (1 kg) of body weight under medical supervision

There have been several reports of glycine reducing the symptoms of people with schizophrenia who were unresponsive to drug therapy.1 Large amounts of glycine (0.8 gram per 2.2 pounds of body weight per day) have been shown to reduce negative symptoms of schizophrenia and improve psychiatric rating scores in one preliminary trial;2 however, these results have not been repeated in later trials using similar (very high) amounts.3, 4 Earlier double-blind trials found significant improvements in depression and mental symptoms in people with schizophrenia who took glycine for six weeks.5, 6 Most trials demonstrated a moderate improvement in schizophrenia symptoms in those taking glycine supplements.7 Long-term supplementation with high amounts of glycine may be toxic to nerve tissue, however. Some preliminary successes have been reported using smaller amounts of glycine, such as 10 grams per day.8 Long-term studies on the safety of glycine therapy are needed.


1. Waziri R. Glycine therapy of schizophrenia: Some caveats. Biol Psychiatry 1996;39:155-6.

2. Heresco-Levy U, Javitt DC, Ermilov M, et al. Efficacy of high-dose glycine in the treatment of enduring negative symptoms of schizophrenia. Arch Gen Psychiatry 1999;56:29-36.

3. Evins AE, Fitzgerald SM, Wine L, et al. Placebo-controlled trial of glycine added to clozapine in schizophrenia. Am J Psychiatry 2000;157:826-8.

4. Potkin SG, Jin Y, Bunney BG, et al. Effect of clozapine and adjunctive high-dose glycine in treatment-resistant schizophrenia. Am J Psychiatry 1999;156:145-7.

5. Heresco-Levy U, Javitt DC, Ermilov M, et al. Double-blind, placebo-controlled, crossover trial of glycine adjuvant therapy for treatment-resistant schizophrenia. Br J Psychiatry 1996;169:610-7.

6. Javitt DC, Zylberman I, Zukin SR, et al. Amelioration of negative symptoms in schizophrenia by glycine. Am J Psychiatry 1994;151:1234-6.

7. Semba J. [Glycine therapy of schizophrenia; its rationale and a review of clinical trials]. Nihon Shinkei Seishin Yakurigaku Zasshi 1998;18:71-80 [review] [in Japanese].

8. Rosse RB, Theut SK, Banay-Schwartz M, et al. Glycine adjuvant therapy to conventional neuroleptic treatment in schizophrenia: an open-label, pilot study. Clin Neuropharmacol 1989;12:416-24.

Glycine is a nonessential amino acid used by the body to build proteins. It is present in considerable amounts in prostate fluid.

Copyright 2016 Healthnotes, Inc. All rights reserved.

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The information presented by Healthnotes is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. Self-treatment is not recommended for life-threatening conditions that require medical treatment under a doctor's care. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2017.