Pure L-Carnitine Powder Supplier
L-Carnitine is a kind of amino acid-like substance that can be synthesized by the human body. It features multiple functions, including regulating energy metabolism, anti-fatigue, assisting in regulating blood lipids, and protecting myocardium and muscles. It has a wide range of applications, such as pharmaceuticals and dietary supplements. It can also be used as a food additive in functional foods and in pet feed to promote growth and enhance immunity. As a professional manufacturer and supplier, Healthkintai® focuses on pharmaceutical and dietary supplement raw materials as well as intermediates, and can provide high-purity (99%) L-Carnitine powder and other more moisture-resistant products in the same series. If you want to order, please contact us at health@kintaibio.com now. Our hot-selling specifications are shown in the table below.
|
Item |
CAS NO. |
Specification |
Test Method |
|
L-Carnitine Base Powder |
541-15-1 |
99% |
HPLC |
|
Acetyl L-Carnitine HCI Powder |
5080-50-2 |
99% |
|
|
L-Carnitine Tartrate Powder |
36687-82-8 |
99% |
|
|
L-Carnitine Fumarate Powder |
90471-79-7 |
99% |
|
|
Propionyl-L-Carnitine HCl Powder |
119793-66-7 |
98% |
The TDS of Healthkintai's Pure L-Carnitine Powder
|
Item |
Specification |
Testing method |
|
Assay |
99% l-carnitine |
HPLC |
|
Appearance(Color) |
Off-white Powder |
Organoleptic |
|
Particle Size |
99% Through 80 mesh |
USP<786> |
|
Loss on drying |
≤5.0% |
GB 5009.3 |
|
E.Coli |
Negative |
GB 4789.3 |
|
Salmonella |
Negative |
GB 4789.4 |
|
Heavy Metals (Total) |
≤10.0ppm |
GB 2762-2025/ICP-MS |
|
Arsenic(As) |
≤ 1.0ppm |
GB 2762-2025/ICP-MS |
|
Lead(Pb) |
≤ 3.0ppm |
ICP-MS |
|
Mercury(Hg) |
≤ 0.1ppm |
ICP-MS |
|
Cadmium(Cd) |
≤ 1.0ppm |
ICP-MS |
Is L-Carnitine Safe?
In major international markets, l carnitine is widely recognized as a safe, mature, and compliant raw material for dietary supplements and food products.
- The US FDA lists it as a GRAS (Generally Recognized As Safe) substance, allowing it to be freely marketed as a dietary supplement ingredient.
- The EU EFSA approves its use as a food supplement and feed additive, and formally recognizes stable salt forms such as L-Carnitine Fumarate and L-Carnitine Tartrate.
- Markets including Japan, Australia, and New Zealand also regulate L-Carnitine as a food additive, nutritional fortifier, or natural health product, permitting its legal production, import, and marketing.
Acetyl Carnitine VS L Carnitine
L-carnitine is nearly insoluble in lipids and difficult to cross the blood-brain barrier, mainly used for exercise-induced fat loss, muscular energy metabolism, endurance improvement, and weight management.
Acetyl-L-carnitine is an acetylated derivative of L-carnitine. With the introduction of acetyl groups, it possesses both water solubility and lipid solubility with significantly enhanced lipophilicity, allowing easier penetration across cell membranes and the blood-brain barrier. It can donate acetyl groups to participate in neurotransmitter synthesis and exhibits stronger antioxidant activity, mainly applied in neuroprotection, cognitive memory, brain fatigue relief, mood regulation, and peripheral nerve health.
What Are the Benefits of L-Carnitine?
L Carnitine for Weight Loss (Fat Loss)
L-Carnitine does not directly "burn fat", but acts as a critical carrier essential for human fat metabolism. It achieves fat reduction effects by improving the efficiency of fat oxidation, making it one of the most widely recognized safe and commonly used weight-management nutritional raw materials worldwide. Long-chain fatty acids produced by the breakdown of body fat cannot directly enter mitochondria to generate energy. Instead, they rely on L-Carnitine as a transport carrier to shuttle fatty acids from the cytosol into mitochondria for β-oxidation, where they are ultimately converted into ATP for energy supply.
When endogenous L-Carnitine is insufficient, fat accumulates and is difficult to consume. Supplementation with exogenous L-Carnitine can increase the rate of fat transport, accelerate fat decomposition and consumption, and reduce fat accumulation.
L Carnitine Pre Workout
Many people often ask, "can I take l carnitine with pre workout?" The answer is yes. Supplementing with L-Carnitine pre-workout can enhance the body's fat transport capacity in advance, allowing the body to switch to a fat-burning state more quickly once exercise begins, significantly improving fat oxidation efficiency for better fat loss and physical performance.
It helps the body prioritize fat as an energy source, reduces rapid muscle glycogen consumption, effectively delays fatigue, improves exercise endurance, and enables longer and more stable workout intensity. At the same time, it promotes smooth energy metabolism, reduces lactic acid buildup during exercise, and relieves muscle soreness and stiffness after workouts.
L-Carnitine Benefits for Male
Provides core energy for sperm: As the only carrier for fatty acids to enter mitochondria, it promotes ATP production, significantly improves sperm forward motility and vitality, and alleviates asthenospermia.
Protects sperm structure and DNA: Eliminates reactive oxygen species, reduces oxidative stress, stabilizes cell membranes, decreases sperm malformation rate, lowers DNA fragmentation rate, and enhances conception quality.
Promotes sperm maturation: In the epididymis with high carnitine concentration, it facilitates sperm maturation and capacitation, increasing sperm concentration and normal morphology rate.
Extends sperm survival: Inhibits premature sperm apoptosis, reduces the proportion of dead sperm, and prolongs sperm lifespan and viability.
Maintains testicular microenvironment: Improves energy metabolism of testicular cells, supports the function of testosterone-secreting cells, and sustains healthy and stable reproductive system function.
L-Carnitine Benefits for Female
L-carnitine does not directly cure diseases but improves the core abnormalities of PCOS fundamentally by enhancing insulin sensitivity, promoting fat metabolism, reducing androgens, alleviating oxidative stress, and restoring ovulation.
Improves insulin resistance: Enhances cellular insulin sensitivity, reduces insulin levels, and blocks the core cause of excessive androgen production in PCOS at the source.
Lowers androgen levels: Reduces ovarian androgen secretion and promotes the metabolism of excess androgens, alleviating typical symptoms such as hirsutism, acne and hair loss.
Promotes fat metabolism: Accelerates fatty acid oxidation and decomposition, reduces visceral fat.
Relieves oxidative stress and inflammation: Eliminates free radicals, protects ovarian granulosa cells, and improves the follicular development microenvironment.
L-Carnitine Uses
Sports Nutrition & Weight Management
L-carnitine is widely used in sports nutrition and weight management. Common products include tablets, capsules, powder, oral liquid, and sports drinks. It can effectively assist fat loss and weight control when combined with exercise and calorie control.
Male Reproductive Health
In the field of male reproductive health, L-carnitine is often made into fertility capsules, complex nutritional tablets, and other products. It provides good nutritional support for people with asthenospermia and oligospermia and is an important nutrient for male preconception care.
Cardiovascular Health
L-carnitine is commonly used in cardiovascular health products, such as cardioprotective capsules and nutritional formulas for middle-aged and elderly people. It is often combined with Coenzyme Q10, and the two ingredients exert synergistic effects.
Pet Health
L-carnitine is also widely used in pet health, commonly found in fat-loss supplements, heart care creams, and complex health products for dogs and cats. It can improve physical strength and metabolic levels in senior pets and enhance overall pet health.
Medical & Clinical Applications
In clinical medicine, L-carnitine is available as an oral solution, injection, and other pharmaceutical forms. It is mainly used to treat primary and secondary carnitine deficiency and provides metabolic support for dialysis patients and patients with liver diseases and metabolic disorders to maintain normal body energy metabolism.
When Is the Best Time to Take L-Carnitine?
For Workout: 30–60 minutes pre-workout. Rapidly absorbed, it facilitates fatty acid transport for energy production.
For Weight Loss: On an empty stomach before breakfast or 30 minutes before meals. The fasting state activates fat metabolism and enhances insulin sensitivity.
For Men's Sperm Quality Improvement: After morning and evening meals. Steady absorption after meals maintains high carnitine concentration in the epididymis.
For Women with PCOS: After breakfast and dinner. Post-meal intake steadily improves insulin resistance.
Where to Buy L-Carnitine?
Healthkintai® has been deeply engaged in the research, development, and production of dietary supplement raw materials for more than ten years.
- We possess mature technical systems and comprehensive quality control and can provide high-purity pure L-carnitine powder and its derivatives, including acetyl-L-carnitine.
- We support customized services such as specification customization, purity adjustment, and physical and chemical index optimization.
- With complete qualifications and compliance with international mainstream standards, our products are stable and reliable. We sincerely welcome you to discuss this at health@kintaibio.com.
FAQ
Q: Can I take l carnitine before bed?
A: L-carnitine can be taken before bed. It only participates in peripheral fatty acid metabolism and has no central excitatory effect, so it does not affect sleep and may even promote nighttime fat metabolism. In contrast, acetyl l-carnitine can cross the blood-brain barrier and increase brain excitability, which may cause insomnia or vivid dreams, so it is not recommended before bedtime.
Q: What is the L-carnitine dosage for weight loss?
A: The standard effective dosage of L-carnitine for weight loss is 1000–2000 mg (1–2 g) daily, taken in 1–2 divided doses. The optimal time to take it is 30–60 minutes before exercise, as it can significantly improve fat transport efficiency and enhance fat-burning effects during physical activity. For general daily fat loss, it may also be taken with breakfast or lunch, and should be avoided before bedtime to prevent potential sleep disturbances. L-Carnitine L-Tartrate is the most stable and best-absorbed form. The daily dosage for healthy adults is generally not recommended to exceed 3000 mg, as excessive intake does not enhance weight loss effects but may cause gastrointestinal discomfort. Fat reduction effects will be more significant when combined with regular exercise and calorie control.
Q: What are the side effects of l-carnitine?
A: L-carnitine has high overall safety and is a natural substance in the human body. There are virtually no serious side effects at recommended dosages; some individuals may experience mild gastrointestinal reactions such as diarrhea, bloating and nausea, and excessive intake may worsen these discomforts.
Reference:
https://en.wikipedia.org/wiki/Carnitine
https://hfpappexternal.fda.gov/scripts/fdcc/index.cfm?set=FoodSubstances&id=CARNITINE
https://efsa.onlinelibrary.wiley.com/doi/10.2903/j.efsa.2018.5137
https://pubmed.ncbi.nlm.nih.gov/32359762/
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