L-Carnitine (L-Tartrate/ALCAR)
Metabolism & fitnessFunction & benefits
It plays a vital role in transporting long-chain fatty acids into the mitochondria to produce energy, supporting physical performance and muscle recovery.
Dosage & how to use
| Recommended dose | 1000–2000 mg daily |
| Best time to take | 30–60 minutes before training or in the morning |
| Frequency | 1–2 times daily |
Important warnings
High doses may cause nausea or a slight fishy odour in sweat and urine
Avoid taking it at night to prevent insomnia
Not recommended for people with epilepsy without medical supervision
Drug interactions
It may reduce the effect of thyroid hormones in the tissues; people with an underactive thyroid should consult a doctor. It interacts with anticoagulants.
Scientific references
- NIH ODS: Carnitine Fact Sheet
Related supplements
- CLA (Conjugated Linoleic Acid)Metabolism & fitness
- Green Tea Extract (EGCG)Metabolism & weight management
Content last updated: 17 October 2026 · Based on published sources and research (EFSA / NIH / PubMed)
⚖️ Medical disclaimer: The information and data provided here are for health education and nutritional guidance only. They are not a medical diagnosis and never replace a direct consultation with your doctor or pharmacist. Always consult your doctor before starting any supplement, especially during pregnancy or breastfeeding or when taking long-term medication.