Doctor's Best L-Carnitine Fumarate helps fuel fat metabolism for energy and faster exercise recovery, thanks to a strong L-Carnitine blend that athletes rely on.

Benefits & Features:

• Helps everyday energy during workouts.
• L-Carnitine assists fat transport into mitochondria, boosting energy production and quicker post workout recovery for busy, active people.
• Plant-based capsule keeps it vegan friendly.
• The Biosint Carnitines approach helps stabilise delivery in a pharmaceutical grade process, offering purity and consistency you can feel during workouts and daily activity, quickly and simply.
• As a dietary supplement, this formula slots into your routine, supporting fat metabolism and energy without extra additives for busy lifestyles everywhere.

Doctor's Best is known for Science Based Nutrition and clear ingredient sourcing, including L-Carnitine Fumarate from BIOSINT using a pharmaceutical grade, patented process. The star ingredient l carnitine is central to energy metabolism and fat fuel, you know, helping support active lifestyles. The capsules are vegan, non GMO, gluten free, soy free and pesticide free, with BSE free status, reflecting a commitment to purity. The brand has been in the market since 2007, earning trust through transparent manufacturing and consistent quality that daily athletes rely on.

L-Carnitine (from L-carnitine fumarate)

• GTIN: 753950001060
• Manufacturer: Doctor's Best
• Size: 60 Capsules
• Categories: Acetyl-L-Carnitine SupplementsCHECKOUT UPSELLDoctor's BestSlimming and Weight Management SupplementsStamina & Endurance Supplements
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take 1 capsule daily, with or without food, or more as recommended by a nutritionally-informed physician. Store in a cool, dry place. Individuals with thyroid problems or on anticoagulant therapy should consult their physician before using this product.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: L-Carnitine (L-Carnitine Fumarate)

This Active Ingredient Is: L-Carnitine (L-Carnitine Fumarate) to sound a touch more casual and human, and it keeps the core fact intact.

L-Carnitine is a nutrient that helps with energy production by letting fatty acids creep into cells’ mitochondria for oxidation, and this formulation uses L-Carnitine Fumarate to support steady delivery.

This form comes from Biosint Carnitines and is presented in vegan capsules, aligned with vegan, non-GMO principles

What Does L-Carnitine Do?

L-Carnitine helps with normal energy metabolism by moving fatty acids into mitochondria for use in energy generation, and this supports fat metabolism and may help with exercise recovery and cardiovascular function, in line with EFSA guidance

EFSA-supported nutrient functions underline its role in metabolic energy pathways and fat utilisation in healthy people

*This product is not intended to diagnose, treat, cure, or prevent any disease.

Why Doctor's Best L-Carnitine Fumarate Welzo Selected. Doctor's Best stands out for its Science-Based Nutrition focus and vegetarian-friendly, non-GMO formulations, establishing a trusted, consumer‑positive reputation in the market. The brand has a long-standing track record since 2007 and is recognised for transparency with ingredients and manufacturing, which aligns with Welzo’s commitment to clear quality and sourcing. The L-Carnitine in this formulation is sourced from BIOSINT using a pharmaceutical‑grade, patented process, reinforcing the brand’s alignment with high manufacturing standards. The finished product carries vegan, non‑GMO, gluten‑free, soy‑free, pesticide‑free and BSE‑free attributes, reflecting a comprehensive quality approach that supports safety and purity. This brand was evaluated by our medical team for compliance with the certifications we require, and Welzo highlights Doctor's Best for its dedicated quality philosophy. This brand is particularly suited for a capsule containing 500 mg L-Carnitine per dose, reflecting a consistent, well‑defined dosing strategy that supports fat metabolism and energy production as described in the product information. The partnership emphasises expertise, reliability and transparent quality practices, essential to Welzo’s supply standards.