Research peptides · Third-party tested
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Quaternary ammonium compound, sold for laboratory research.
Identity
L-Carnitine is a small molecule the body already makes from two amino acids, mostly in the liver and kidneys, and then stores in muscle and heart tissue. It is also sold as a standalone supplement, usually marketed around exercise and weight management. Think of it as a shuttle, its main job is carrying fat into the part of the cell that burns it for fuel.
L-Carnitine is a quaternary ammonium compound, molecular formula C7H15NO3, molecular weight 161.20 g/mol. SBz Industries sells it for laboratory research.
Research
In plain terms, with a link to every study. The most useful thing to notice is what each study was done in.
L-Carnitine has one of the deeper research records of anything in this catalog, with dozens of randomized trials in people going back over 30 years. Most of that work centers on weight, fasting-related fatigue, and exercise recovery, with mixed and often modest results. Reviews that pool this data describe small average effects, not dramatic ones.
review2016
Pooled nine randomized trials totaling 911 adults comparing carnitine against a placebo and tracked body weight over the study period. People taking carnitine lost a few pounds more on average than the placebo group, and that gap shrank the longer people stayed on it.
The effect of (L-)carnitine on weight loss in adults: a systematic review and meta-analysis of randomized controlled trials.
Pooyandjoo and colleagues, Obesity Reviews
people2014
Ran a week-long supervised fast in 30 adults with several common metabolic risk factors, giving half an IV of L-carnitine and half a saline IV, then tracked daily hunger and fatigue ratings. The carnitine group reported less hunger and less fatigue than the saline group during the fast.
L-carnitine ameliorated fasting-induced fatigue, hunger, and metabolic abnormalities in patients with metabolic syndrome: a randomized controlled study.
Zhang and colleagues, Nutrition Journal
review2021
Reviewed 11 human trials that gave people oral L-carnitine either once before a workout or daily for weeks, then measured things like perceived effort and cycling power. Higher-intensity workout tests tended to show higher power numbers with carnitine; moderate-intensity tests generally showed no difference from placebo.
Effect of Acute and Chronic Oral l-Carnitine Supplementation on Exercise Performance Based on the Exercise Intensity: A Systematic Review.
Mielgo-Ayuso and colleagues, Nutrients
Each study links to its record on PubMed, the US National Library of Medicine database. Checked 25 September 2026.
Handling
Per supplier spec. Confirm before publishing.
Give the vial twenty minutes on the bench before opening it, so water does not condense onto the powder.
Slowly, down the inside wall of the vial, never straight onto the powder.
Leave it alone until it clears. Do not shake it. Shaking damages the peptide.
Once mixed, it breaks down much faster than the dry powder. Keep it cold and dark.
Documentation
An independent lab tests every compound we sell. It confirms the compound is what the label says and measures purity by HPLC.
The latest certificate is on the product page, so you can read the result before you order.
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Questions
L-Carnitine is a small molecule the body already makes from two amino acids, mostly in the liver and kidneys, and then stores in muscle and heart tissue. It is also sold as a standalone supplement, usually marketed around exercise and weight management. Think of it as a shuttle, its main job is carrying fat into the part of the cell that burns it for fuel. SBz Industries sells it for laboratory research only.
Pooled data from nine human trials found people taking it lost a small amount more weight than a placebo group, on average a few pounds over the study period, and the gap got smaller the longer people took it.
Yes. It is the same molecule the liver and kidneys produce from two amino acids; a supplement just adds more of it from outside.
The molecular formula is C7H15NO3. The molecular weight is 161.20 g/mol. Both are stated on the certificate of analysis on the product page.
L-Carnitine ships as a freeze-dried powder. Mix it with bacteriostatic water, added slowly down the inside wall of the vial, and let it dissolve without shaking. The researcher decides the working concentration, not us, and we publish no protocols.
Per supplier spec. Confirm before publishing. Vials ship in plain outer packaging with no product name on the outside.
Yes. An independent lab tests every compound: it confirms the compound is what the label says and measures purity by HPLC. The latest certificate is on the product page, and you can read it before you order.
Researchers and institutions, 21 or over. By ordering you confirm the material is for laboratory research and will not be used in humans or animals.
Order
Every compound is third-party tested, with the certificate on its product page. Every order ships in plain packaging.