L-Carnitine Fumarate with Biosint Carnitines is a vegan, non-GMO supplement designed to support fat metabolism, energy production, cardiovascular health, and exercise recovery. The star ingredient, L-carnitine fumarate, acts as a molecular shuttle to help fatty acids become energy during exercise. Doctor's Best is known for science based nutrition and transparent sourcing, with Biosint Carnitines providing high purity L-carnitine fumarate.

Benefits & Features:

• Supports daily energy without heavy meals.
• Aids fat metabolism to help you metabolise fats more efficiently during activity.
• Star ingredient L-carnitine fumarate shuttles long chain fatty acids into mitochondria for energy during workouts.
• Biosint Carnitines deliver high purity L-carnitine fumarate sourced from Italy.
• Produced by Doctor's Best, a brand trusted for science based nutrition and clear sourcing, the product is backed by independent testing and rigorous quality standards.

Doctor's Best stands behind science-based nutrition, and this L-Carnitine Fumarate with Biosint Carnitines reflects that ethos. Biosint Carnitines supply high purity L-carnitine fumarate sourced from Italy. It's vegan, non-GMO, gluten-free, soy-free and manufactured in a facility owned by Alfasigma S.p.A under pharmaceutical standards with independent testing. If you're comparing carnitine acetyl l carnitine options, this fumarate form is a practical alternative to many diet pills.

(other) Modified cellulose (vegetarian capsule), magnesium stearate (vegetable source), silicon dioxide.

• GTIN: 753950001541
• Manufacturer: Doctor's Best
• Categories: Acetyl-L-Carnitine SupplementsCHECKOUT UPSELLDoctor's BestNew ArrivalsSlimming 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 as advised. Take 1-3 capsules daily or as directed.

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

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

L-Carnitine fumarate is a nutritionally active amino acid derivative that participates in fatty acid transport into mitochondria for energy production. The fumarate component contributes to cellular energy pathways in muscle tissue. This form is typically derived from vegan, plant-based sources and is used to support metabolic function.

The formulation also includes Biosint Carnitines, which are high-purity L-carnitine fumarate ingredients sourced to support quality and consistency.

What Does L-Carnitine Do?

L-Carnitine participates in the movement of long-chain fatty acids into mitochondria where they are oxidised to generate energy. Fumarate is an intermediary in the Krebs cycle, contributing to ATP production from fats and carbohydrates and supporting energy availability during physical activity.

EFSA-style notes indicate these roles align with normal metabolism and energy production processes, contributing to overall cellular energy and endurance support.

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

Doctor’s Best (chosen) as our supplier (because) of their industry-leading commitment to high-purity production and (stringent) facility standards. The brand is (known) for (science-backed) nutrition and (open) ingredient sourcing, with a (solid) track record of GMP manufacturing and third-party verification that fits Welzo's quality expectations. (Their) use of a patented FDA-approved process for ingredient purity and safety (highlights) a disciplined manufacturing philosophy, while Biosint Carnitines sourced from Italy (emphasise) high-purity L-Carnitine Fumarate. This (combo) positions Doctor’s Best as a (dependable) partner for advanced formulations that (prioritise) safety and consistency.

This brand was (assessed) by Welzo's healthcare professionals for compliance with how we verify ingredient quality, and the assessment (highlighted) robust independent lab verification and manufacturing in a facility owned by Alfasigma S.p.A under pharmaceutical standards. This (careful) quality framework translates into predictable, reliable products for customers seeking vegan, non-GMO and allergen-conscious options.

Welzo (chose) Doctor’s Best over competitors because of their (proven) commitment to purity, clear formulation standards, and a product-specific fit for L-Carnitine Fumarate with Biosint Carnitines, (ensuring) alignment with our product safety and performance criteria.