Metabolic Category
L-Carnitine
THE FAT TRANSPORTER
Levocarnitine; L-Carnitine Tartrate
L-Carnitine is an amino acid that shuttles fatty acids into your mitochondria to be burned for energy. It's essential for fat metabolism and energy production. While your body makes it naturally, supplementing can boost fat burning, improve exercise performance, and support brain and heart health.
L-Carnitine Evidence Snapshot
How these guides are reviewed- Regulatory status
- Not FDA approved · research use only
- Dosing guidance
- Reviewed by our clinical team
- Linked evidence
- Sources pending
- Content updated
- Aug 28, 2026
Dose and schedule recommendations shown below come from The Peptide App Clinical Team. Research links are provided so readers can inspect the supporting evidence directly.
Quick Answers About L-Carnitine
Is L-Carnitine FDA approved?
No. This profile records L-Carnitine as not FDA approved and for research use only.
More context
Review the regulatory and source details on this page for the current context.
What dose does The Peptide App Clinical Team recommend for L-Carnitine?
Dose: 1-3 g daily (divided doses).
More context
Schedule: daily. Cycle: Ongoing or as needed. This is clinical-team guidance for reference and does not replace individualized instructions from a licensed clinician.
What research supports this L-Carnitine guide?
No linked research sources are currently available on this guide.
More context
Treat the profile as provisional until supporting sources are published.
What are the side effects of L-Carnitine?
Reported side effects of L-Carnitine include Fishy odor at high doses, Mild nausea, and GI discomfort.
More context
They are reported or occasional reactions, not a prediction of what any one person will experience.
Is L-Carnitine safe?
L-Carnitine has an editorial safety grade of A (Excellent Safety).
More context
Naturally occurring amino acid. Very safe with decades of use. Safety depends on dose, sourcing, health history and medical supervision, so this page does not call it safe for personal use.
Studied Effects & Mechanisms
Fat Shuttle
Transports fatty acids into mitochondria for burning
Energy Production
Increases ATP generation from fat metabolism
Heart Support
Provides energy to heart muscle and reduces oxidative stress
Who is this for
Those wanting enhanced fat burning · Athletes seeking endurance · People with low energy · Anyone supporting mitochondrial function
L-Carnitine price snapshot
In-stock prices from 13 vendors, checked Oct 14, 2026.
- Vendors
- 13
- Listings
- 16
- Observed range
- $19–$101
Market evidence
L-Carnitine product testing and COAs
We found certificates from a few of the L-Carnitine vendors we track. Based on the certificates our crawler found; vendors may publish more than we index. Research on this page describes the molecule. Vendor certificates concern particular market samples or batches; they do not change the research evidence or establish clinical safety, sterility, or suitability for use.
The clinic network
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