AMINO ACIDS
L-carnitine (tartrate)
L-carnitine tartrate supports exercise recovery and helps cells use fat for energy.
Also known as: carnitine, L-carnitine tartrate
At a glance
- Form
- L-Carnitine tartrate
- Category
- Amino Acids
- In an apiece formula
- 1,000 mg a day (you can change it)
- Recommended intake
- No recommended intake (not an essential nutrient)
- Upper limit
- No established UL
- Studied for
- Muscle & recovery*
- Reference
- NIH ODS: Carnitine fact sheet
What the research says
L-carnitine tartrate improved recovery and reduced soreness after exercise in men and women aged 21 to 65.*
RCT (double-blind, placebo-controlled) · 80 · Stefan M, Nutrients 2021. Read the study on PubMed
Who should be careful
Our safety rules leave L-carnitine out of a formula, or keep the amount lower, with:
Kept to a lower amount with
- Levothyroxine
- Liothyronine or desiccated thyroid
Medicines and supplements
- Phosphate binder
Procedures
- Dialysis
Health conditions
- Chronic kidney disease
- Advanced kidney disease
Life stage
- Pregnancy
- Breastfeeding
- Trying to conceive
Always check with your doctor or pharmacist before adding a supplement if you take medication, are pregnant or nursing, or have a health condition. Stay under the upper limit from all sources combined, including multivitamins.
Questions
How much L-carnitine a day?
apiece formulas usually include 1,000 mg a day. The recommended intake for adults is No recommended intake (not an essential nutrient). Upper limit: No established UL.
What is L-carnitine used for?
L-carnitine tartrate supports exercise recovery and helps cells use fat for energy. In apiece it is part of formulas for Muscle & recovery.*
Who should be careful with L-carnitine?
apiece’s safety rules leave it out or limit it with: Levothyroxine; Liothyronine or desiccated thyroid; Phosphate binder; Dialysis; Chronic kidney disease; Advanced kidney disease; Pregnancy; Breastfeeding; Trying to conceive. Check with your doctor or pharmacist if any apply to you.
Can I get L-carnitine in a personalized supplement?
Yes. apiece builds one daily blend around your goals and, if you have them, your lab results. L-carnitine can be part of it at the amount listed, with every ingredient shown and never more than 10 capsules a day.
*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. This page is general information, not medical advice. Check with your doctor or pharmacist before starting a supplement, especially if you take medication, are pregnant or nursing, or have a health condition. Updated 2026-10-21.