Customize Your Shopping Experience!

Please select the destination country, language, and currency you prefer.

Your Cart is Empty
But it doesn't have to be.
Continue Shopping.

Doctor's Best, Best Acetyl-L-Carnitine HCl, 588 mg, 60 Veggie Caps
(Save Image)

Doctor's Best, Best Acetyl-L-Carnitine HCl, 588 mg, 60 Veggie Caps
(Save Image)

Doctor's Best, Best Acetyl-L-Carnitine HCl, 588 mg, 60 Veggie Caps


90 Reviews
In Stock
  • Product Code: DRB-00105
  • UPC Code: 753950001053
  • Package Quantity: 60 Veggie Caps
  • Dimensions: 2.1 x 2.1 x 3.8 in, 0.15 lbs (0.07 kg)
Our Price:
You Save:
$10.83 (49%)
  • Volume Discount
  • Buy 4+

    Save 5%

This product is already in your Wish List.

View Wish List

This product is now in your Wish List.

Bundle Offer
Save $1.67 when you purchase these items today for only $31.09

Total: $32.76

Combo Discount: -$1.67

Together: $31.09

Product Overview

  • Science-Based Nutrition
  • Dietary Supplement
  • Biosint Carnitines
  • Featuring Sigma Tau Carnitine
  • Enhances Alertness & Mental Focus

Acetyl-L-Carnitine (ALC) is a naturally occurring form of L-Carnitine, a vitamin-like nutrient synthesized in the body, from the amino acids lysine and methionine. ALC plays a key role in the production of acetylcholine, an important neurotransmitter for brain and nerve cell function.

The Sigma tau supplied Acetyl-L-Carnitine in this product is derived from a base of pharmaceutical grade L-Carnitine manufactured by patented, FDA-approved process that fully complies with USP, FCC and EU monographs. It is pesticide-free and BSE safe.

  • Supports energy metabolism in the brain
  • Keeps nerves healthy and in repair
  • Decreases free radical production in the brain
Suggested Use

Adult Use: Take 1 to 4 capsules daily with or without food. Higher intakes may be beneficial, as recommended by a nutritionally-informed physician.

Other Ingredients

Stearic acid, cellulose, magnesium silicate, silicon dioxide, modified cellulose (vegetarian capsule).

Non-GMO and Gluten Free

Contains nothing other than listed ingredients.


Individuals with thyroid problems or on anticoagulant therapy should consult their physician before using this product.

Visit Manufacturer's Website
Supplement Facts
Serving Size: 1 capsule
Servings per container: 60 servings
  Amount Per Serving: % Daily Value
(from 588 mg acetyl-l-carnitine HCI supplied by Sigma tau)
500 mg
†Daily Value not established.

iHerb Customer Reviews

5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Remedy for fatigue
Firstly thanks to the iHerb team for maintaining an excellent and objective collection of recent scientific evidence for "herbs and supplements". For L-carnitine I can add another review written by JD Harris in Current Opinion in Supportive and Palliative Care in 2008, titled "Fatigue in chronically ill patients". He writes "..Among complementary therapies, L-carnitine has the most potential..". And I agree, taking 500mg of this together with one capsule of Glycine Propionyl L-carnitine(Source Naturals) has made my daily fatigue disappear. However, I don't reccomend taking it in the evening since it seems to interfere a bit with sleep initiation.
Jan 05, 2009
Another good product at excellent price. This was the first ALCAR supplement I bought. - - - - - - - - - - - - It is extremely safe(Carnitine supplementation has an excellent safety record. Doses of 2-6 grams per day over a period of 6 months have been studied with no observed adverse side effects.) and the benefits are numerous - Acetyl-L-carnitine is a precursor of acetylcholine and improves cognitive performance, ameliorates age-related deficits, preserves, at least partially, learning and memory from the natural decay occurring with age, rescues aged neurons by increasing their responsiveness to neuronotrophic factors in the CNS and lot more.... Recommend this product. 5 stars.
Aug 26, 2012

The Most Recent iHerb Customer Reviews

See All Reviews