Peptide Academy · Metabolic
Also known as Levocarnitine
Educational research summary, not medical advice. Many compounds here are not approved for human use. Talk to a licensed clinician before making any health decision.
The Peptide Academy is free to read. Members also get the research protocols for L-Carnitine 600mg, dose and vial tracking, and an AI Advisor with cited sources. Try it all free for 7 days, no card needed.
Start my free 7-day trialThe shuttle molecule for fatty-acid oxidation, popular in injectable fat-loss and performance stacks.
Transports long-chain fatty acids across the inner mitochondrial membrane for beta-oxidation; injectable dosing bypasses poor oral absorption.
N/A — amino acid derivative (not a peptide)
Fishy body odor at high doses; TMAO elevation debated for cardiovascular risk.
Common side effects
Histamine reactions
Occasional redness or itching at the site.
Common fixes
Stop and get help
Basis: General clinical experience with B12 and L-carnitine injections. Educational only, not medical advice.
Warfarin
L-carnitine has been reported to increase warfarin's effect (higher INR).
Thyroid medicine (levothyroxine)
L-carnitine may reduce thyroid hormone activity; tell the prescriber.
Metformin and acid reducers (omeprazole, famotidine)
These lower B12 absorption from food over time, one reason people use injectable B12.
Everything else you take, including supplements
Bring a full list of medicines and supplements to your pharmacist or clinician before starting.
Basis: Documented L-carnitine and vitamin B12 interactions (NIH/MedlinePlus dietary supplement references). Educational only, not medical advice. Never stop or change a prescribed medicine without your prescriber.
Protocols & tracking are members-only
Members see the research protocols for L-Carnitine 600mg, plan schedules, track every dose and vial, and ask the AI Advisor questions with cited sources. Try every Researcher feature free for 7 days, no card needed.