Ingredient · Amino Acid
L-Carnitine
- Forms graded
- 5
- Dose zones
- 5
- Updated
- 1 Sept 2026
Every L-Carnitine form, graded
5 forms scored on published absorption evidence. This is the comparison no supplement brand will publish about its own products.
- ×1.5Superior absorptionL-Carnitine Tartrate
- ×1.25Well absorbedAcetyl L-Carnitine (ALCAR), L-Carnitine
- ×1Reference formCarnitine, Carnitine
- ×0.85Poor absorptionNone graded here
- L-Carnitine TartrateMultiplier×1.5
- Acetyl L-Carnitine (ALCAR)Multiplier×1.25
- L-CarnitineMultiplier×1.25
- CarnitineMultiplier×1
- CarnitineMultiplier×1
Multipliers are applied to each ingredient's dose score when a product is graded. How multipliers are assigned.
How much L-Carnitine should you take?
SuppScore grades doses across evidence zones rather than against a single recommended figure. Scored information, not a recommendation.
- Zone 10 to 250 mg per dayLow dose
- Zone 2250 to 750 mg per dayGeneral maintenance dose
- Zone 3750 to 1000 mg per dayFor deficiency or elevated need
- Zone 53000 to 4500 mg per dayPractitioner-grade dose
- Zone 51000 to 3000 mg per dayPractitioner-grade dose
Zones describe what the evidence supports at a dose. They are not advice on what to take, and they do not replace a conversation with a doctor or pharmacist.
What is L-Carnitine good for?
Products containing L-Carnitine
Scored products that list it on the label, highest scoring first. Ordering is by SuppScore only. We have no commercial relationship with any brand shown.

Happy Koala LLC
Metabolic Harmony
SuppScore 53
Seeking Health
Kids Multivitamin Chewable - MF
SuppScore 36
Wellman
Wellman Original
SuppScore 34
Viridian Nutrition
Cognitive Complex
SuppScore 32
Vitabiotics
Wellman 50+
SuppScore 27
Cardioace
Cardioace Original
SuppScore 26
Wellman
Wellman Max
SuppScore 25Boots
Complete Man 50+
SuppScore 23Boots
Complete Man Multivitamins
SuppScore 18References
Reviewed by the SuppScore advisory board
Every score on this page is computed from the SuppScore ingredient database using our published scoring rules. Our advisory board maintains those rules and the ingredient data behind them, and takes no payment from the brands whose products are scored.
Meet the advisory board · Last reviewed 1 Sept 2026
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