Acetyl-L-Carnitine capsules deliver mitochondrial energy support, helping focus and stamina, powered by BIOSINT Carnitines and Doctor's Best Science-Based Nutrition standards. The acetyl form helps cross into the brain and supports cellular energy. Doctor's Best combines premium BIOSINT Carnitines with vegan, non-GMO and gluten-free certifications to keep quality high. Quality is built in from sourcing to capsule.

Available Sizes & Variants:

120 capsules - Great for daily use and long lasting supply.

Benefits & Features:

• Supports daily energy with efficient fat transport.
• Supports mitochondrial energy production for steady daytime focus and resilience.
• Premium BIOSINT Carnitines sourcing supports consistent quality across batches and aligns with vegan and gluten-free certifications.
• Convenient daily capsule count supports easy integration into morning routines without fuss.
• Enjoy a high quality formula designed for real world results, with vegan, non GMO, and gluten-free assurances that guide you to feel supported throughout your day.

Doctor's Best delivers a nutritional supplement built on clear performance principles. This formula uses BIOSINT Carnitines, including acetyl l carnitine as a premium grade carnitine source trusted in clinical research. The vegan, non-GMO and gluten-free certifications reflect the brand's commitment to purity and accessibility, while the simplified inactive ingredients keep the capsule easy to swallow. With decades of expertise in targeted nutrition, Doctor's Best combines science and practicality to support everyday energy and mental clarity.

(other) Magnesium silicate, microcrystalline cellulose, modified cellulose (vegetarian capsule), silicon, silicon dioxide, stearic acid .

• GTIN: 753950001527
• Manufacturer: Doctor's Best
• Categories: Acetyl-L-CarnitineDoctor's BestEndurance SupplementsNew ArrivalsSlimming and Weight Management 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 2 capsules daily with food. For added benefits, take 4 or more capsules per day, as advised. Mix 1 level scoop with 8 ounces of water one to two times daily or as recommended by your health professional.

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

The Active Ingredient Is: Acetyl-L-Carnitine (Acetyl-L-Carnitine HCl)

Acetyl-L-Carnitine is a mitochondrial energy supporter used in capsules to aid cellular energy production and metabolic function.

This form includes the acetyl group, allowing for brain access and supporting acetylcholine synthesis, with vegan, non-GMO and gluten-free sourcing where stated.

What Does Acetyl-L-Carnitine Do?

Scientific research suggests it helps transport fatty acids into mitochondria for energy production and plays a role in neurotransmitter formation that supports neural communication.

This mechanism aligns with recognised nutrient functions involved in energy metabolism and brain function.

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

Doctor's Best has built a solid track record in mitochondrial energy support through its Science-Based Nutrition approach, underpinned by vegan, non-GMO and gluten-free formulations. This brand’s commitment to rigorous product identity and reliability makes it a trusted partner for Welzo when delivering high‑quality nutraceuticals to our customers.

This product leverages BIOSINT Carnitines, a premium-grade raw material source, combined with Doctor's Best expertise in clinically informed formulation. The use of BIOSINT Carnitines signals controlled manufacturing standards and high product purity, reinforced by the brand’s emphasis on transparent ingredient sourcing and consumer confidence.

Our team evaluated this brand for manufacturing philosophy, testing transparency and certification alignment, and we are confident in Doctor's Best's capability to meet Welzo’s quality expectations. This alignment supports a strong product fit for mitochondrial energy support while upholding strict safety and quality standards, as recognised by our team. For further insight into our selection process, see Welzo's healthcare professionals and our quality certification process.