
What is L-carnitine? The body's own compound made from lysine and methionine
- L-carnitine is a compound that occurs naturally in the body and is formed from the amino acids lysine and methionine. In the diet, it is mainly obtained from meat and dairy products.
- In biochemistry, L-carnitine is known as a transport molecule that shuttles long-chain fatty acids into the mitochondria, the "power plants" of the cells. Around 95% of the body's carnitine is found in skeletal and heart muscle (Evans & Fornasini, 2003).
- In food supplements, L-carnitine is used in stable salt forms, for example as L-carnitine tartrate or as acetyl-L-carnitine (ALCAR).
3220 mg complex with 2184 mg L-carnitine - high-dose and transparently declared
- Green Naturals L-Carnitine contains a 3220 mg complex per daily dose - of which 2184 mg is pure L-carnitine.
- Two forms per daily dose (4 capsules): 2000 mg L-carnitine tartrate (1380 mg L-carnitine) and 1200 mg acetyl-L-carnitine HCl (804 mg L-carnitine) - compared to products that rely on a single form only.
- L-carnitine tartrate is the form most frequently studied in human trials in connection with physical exercise (review: Fielding et al., 2018); acetyl-L-carnitine additionally carries an acetyl group.
With black pepper extract - 19 mg piperine per daily dose
- The complex is complemented by 20 mg black pepper extract (Piper nigrum) with 19 mg piperine, the natural pungent compound of pepper.
- Piperine is being researched as a so-called bioenhancer, i.e. a plant compound that can influence the absorption of other substances (Shoba et al., 1998).
- 120 vegan capsules last 30 days at 4 capsules daily - filled in Germany and lab-tested.
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Optimal time to take
Take the capsules with sufficient liquid during a meal. You can take the daily dose all at once or split it across two meals, for example 2 capsules at breakfast and 2 capsules at lunch. Regular daily intake is what matters.
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Dosage and duration of use
Daily dose: 4 capsules (= 3220 mg L-carnitine complex with 2184 mg L-carnitine and 19 mg piperine). Do not exceed the recommended daily dose. 120 capsules last 30 days. For adults only.
| Quality criterion | Green Naturals® | Other manufacturers |
|---|---|---|
| Raw material & forms | ✔ L-carnitine tartrate + acetyl-L-carnitine HCl | ✕ |
| Sensible dosage | ✔ 3220 mg complex per daily dose | ✕ |
| Transparent declaration | ✔ 2184 mg pure L-carnitine clearly stated | ✕ |
| Well-designed formula | ✔ with black pepper extract (19 mg piperine) | ✕ |
| Purity & lab testing | ✔ every batch independently lab-tested | ✕ |
| Tolerability | ✔ vegan HPMC capsule, no unnecessary additives | ✕ |
| Transparency & responsibility | ✔ clear notes on medication & pregnancy | ✕ |
| Practicality | ✔ 4 capsules daily, 120 capsules = 30 days | ✕ |
Our vision at Green Label® is to create products based on purity and transparency. Our approach is to source high-quality raw materials directly from leading producers worldwide to offer a product that is uncompromisingly committed to natural ingredients. Every capsule of our products carries the promise of purity, sustainability, and maximum effectiveness:
- Premium active ingredients as pure substances, directly from leading producers.
- Production and bottling under the highest pharmaceutical standards (GMP, ISO 22000:2018, HACCP).
- Maximum avoidance of all additives; only valuable natural substances are used.
- Vegan capsule shells, 100% free of PEG and other undesirable substances.
- Packaging in environmentally friendly, non-toxic materials for optimal aroma protection.
My name is Dr. Hari Sven Krishnan, founder of Heilpflanzenwohl GmbH and chief pharmacist.
Together with an experienced team of specialists, including Stephan Walz (pharmacist), Marie Schröder (nutritional scientist), and Dr. Christiane Gras (immunologist), we developed Green Naturals.
The result of intensive research with a clear goal: to offer you natural, highly effective products. At Heilpflanzenwohl, quality and purity come first, because we are convinced: "The best medicine comes from nature – we just need to learn how to use it correctly."
| Ingredients | 4 capsules / day | *NRV% |
|---|---|---|
| L-carnitine tartrate | 2000 mg | ** |
| of which L-Carnitine | 1380 mg | ** |
| Acetyl L-Carnitine | 1200 mg | ** |
| of which L-Carnitine | 804 mg | ** |
| Black pepper extract | 20 mg | ** |
| of which piperine | 19 mg | ** |
** no reference available
What is L-carnitine?
What does L-carnitine do?
What is L-carnitine taken for?
What is the difference between L-carnitine tartrate and acetyl-L-carnitine?
Why does the product contain black pepper extract?
How much L-carnitine per day?
When should you take L-carnitine?
L-carnitine before or after training?
Does L-carnitine have side effects?
Is L-carnitine suitable for women?
Are the L-carnitine capsules vegan?
Who is L-carnitine not suitable for?
How long does one tub last?
Is L-Carnitine available in pharmacies?
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Sources
- Evans, A.M. & Fornasini, G. (2003). Pharmacokinetics of L-carnitine. Clinical Pharmacokinetics, 42(11), 941-967. DOI: 10.2165/00003088-200342110-00002
- Fielding, R., Riede, L., Lugo, J.P. & Bellamine, A. (2018). L-Carnitine Supplementation in Recovery after Exercise. Nutrients, 10(3), 349. DOI: 10.3390/nu10030349
- Shoba, G. et al. (1998). Influence of piperine on the pharmacokinetics of curcumin in animals and human volunteers. Planta Medica, 64(4), 353-356. DOI: 10.1055/s-2006-957450
Remarks
- HACCP (Hazard Analysis and Critical Control Points) is a preventive system for ensuring food safety that identifies and assesses potential hazards in production and minimizes them through targeted control measures. The seal refers to the manufacturing process.
- This is how the grade is calculated: Grade calculation based on star ratings: 5.00 - 4.50 Very good, 4.49 - 3.50 Good, 3.49 - 2.50 Satisfactory, 2.49 - 1.50 Sufficient, 1.49 - 1.00 Poor. For the verification of ratings, no authenticity check of customer reviews is carried out. The ratings are combined from different sources, such as mail-order pharmacies and online marketplaces. Last updated: 13.10.26