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Doctor's Best Acetyl L-Carnitine, Help Boost Energy Production, Support Memory/Focus, Mood, Non-GMO, Vegan, Gluten Free

4.5 4.5 out of 5 stars 746 ratings

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$11.55 with 42 percent savings $0.19 per Count
List Price: $19.99
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Purchase options and add-ons

Brand Doctor's BEST
Flavor Unflavored
Primary Supplement Type Vitamin
Unit Count 60 Count
Item Form Capsule
Item Weight 2.4 ounces
Item dimensions L x W x H 2.13 x 2.13 x 3.69 inches
Special Ingredients Acetylcarnitin
Diet Type Gluten Free
Product Benefits Mental Focus

About this item

  • DOCTOR’S BEST 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. It helps support cognitive function and support health brain neuron function.
  • BRAIN FUNCTION BOOST - helps supply the brain with energy through by enhancing mitochondrial efficiency.
  • ENERGY ENHANCER - supports improvement of memory, learning and focusing. Helps to reduce unwanted stored fats and enhances brain health.*
  • BEST QUALITY ABSORPTION – ALC readily crosses the blood-brain barrier, where it has specific benefits for brain neurons. ALC has been shown to promote healthy ALC levels that can pass the blood-brain barrier to support healthy brain function.
  • CLINICAL TRIALS - contains Biosint Acetyl-L-Carnitine, which is manufactured in Italy by the reputable company Sigma-Tau. A global leader in L-carnitine research, Sigma-Tau holds numerous patents for production of L-carnitine.*

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Product Description

Acetyl-L-Carnitine (ALC) is a nutrient that occurs naturally in the body and is fundamentally important for energy generation by the mitochondria “energy factories” in our cells. The acetyl part of the molecule can be used to make acetylcholine, a key chemical messenger in the brain and all the other organs. ALC also is involved in regulating gene activity (epigenetics) and is a versatile protective nutrient for the nervous system.

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 2.13 x 2.13 x 3.69 inches; 2.4 ounces
  • Item model number ‏ : ‎ DRB-00105
  • Department ‏ : ‎ Health and Beauty>Health and Wellness
  • Date First Available ‏ : ‎ October 2, 2001
  • Manufacturer ‏ : ‎ Doctor’s Best, Inc
  • ASIN ‏ : ‎ B000I4DF96
  • Country of Origin ‏ : ‎ USA
  • Customer Reviews:
    4.5 4.5 out of 5 stars 746 ratings

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Doctor's Best Acetyl L-Carnitine, Help Boost Energy Production, Support Memory/Focus, Mood, Non-GMO, Vegan, Gluten Free
Doctor's Best Acetyl L-Carnitine, Help Boost Energy Production, Support Memory/Focus, Mood, Non-GMO, Vegan, Gluten Free
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Price-42% $11.55
List:$19.99
$25.93$29.95-22% $18.76
List:$23.99
-48% $13.40
List:$25.99
Price Per Unit$0.19 / Count$0.13 / Count$0.15 / Count$0.16 / Count$0.22 / Count
Delivery
Get it as soon as Friday, Jan 10
Get it as soon as Friday, Jan 10
Get it as soon as Friday, Jan 10
Get it as soon as Friday, Jan 10
Get it as soon as Friday, Jan 10
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Important information

Safety Information

This product is labelled to United States standards and may differ from similar products sold elsewhere in its ingredients, labeling and allergen warnings

Indications

not available

Ingredients

Acetyl-L-Carnitine (from BIOSINT Acetyl-L-Carnitine HCl) 500 mg, Magnesium silicate, microcrystalline cellulose, modified cellulose (vegetarian capsule), silicon dioxide, stearic acid.

Directions

As a dietary supplement, take 1 to 4 capsules daily with or without food. Store in a cool dry place.

Legal Disclaimer

These statements have not been evaluated by the Food & Drug Administration. This products is not intended to diagnose, cure, mitigate, treat, or prevent any disease.

Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.

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Customer reviews

4.5 out of 5 stars
746 global ratings

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Customers say

Customers find the nutritional supplement effective and providing good value for money. They appreciate its benefits for brain health, mood enhancement, and energy levels. Many customers report improvements in stress levels and mental clarity after using the supplement. The product also helps with fatigue and pain relief.

AI-generated from the text of customer reviews

60 customers mention "Effectiveness"55 positive5 negative

Customers are satisfied with the nutritional supplement's effectiveness. They say it works as expected and is a good supplement from Doctor's Best Carnitine. The product arrived sealed and in great condition.

"The product came sealed and in great conditions, I usually use it to have more energy and not so much anxiety, I have take it once and I had enough..." Read more

"Good product" Read more

"...The 2 brands are Doctor's Best and Jarrow's. They both work very well BUT I would avoid Jarrows...." Read more

"Works as expected" Read more

28 customers mention "Health benefits"28 positive0 negative

Customers appreciate the supplement's health benefits. They mention it helps with brain health, mood enhancement, and better cardiovascular and kidney health. Many consider it a daily food supplement and health support, with an uncanny sense of overall wellness. Some say it's the best antioxidant they have ever used and an essential OTC item for heart health.

"...male and use this supplement to increase my energy and add to my brain food regiment...." Read more

"...In addition, through diet and supplement, we have reduced her medications from 10 to 1, and, according to her doctor, she has the blood work of a 20..." Read more

"...exact same health benefits as acetyl-L-carnitine, namely, better cardiovascular health, better kidney health, prevention of nerve damage, prevention..." Read more

"...this product not for its mood enhancement, but as a supplement for ketogenic dieting...." Read more

27 customers mention "Mood improvement"27 positive0 negative

Customers find the nutritional supplement helpful for improving mood and concentration. They report that it helps reduce stress and anxiety, allowing their brains to perform better. Some say it adds energy to their lives and is an essential neuronal energizer.

"...in great conditions, I usually use it to have more energy and not so much anxiety, I have take it once and I had enough energy and remain calm." Read more

"...Carnitine is a neuronal energizer and is essential for the production of energy by the mitochondria, the "powerhouse" of the cell...." Read more

"...and my tolerance of activity has improved (which I guess for normal people might translate into "more energy")...." Read more

"...But what I noticed is that there really is a difference in my mood when I take this product twice a day (500mg morning, 500mg night); I'm happier..." Read more

26 customers mention "Value for money"26 positive0 negative

Customers find the nutritional supplement a good value and of high quality for the price.

"...I prefer Doctors Best for this supplement and find it the highest quality for the price (only wished it were cheaper)." Read more

"AND Money saver since I don't have to hire someone to come in and clean my house anymore due to lack of energy...." Read more

"No complaints here. Good price for the product...." Read more

"...This was the one I always ordered, and was a terrific value...." Read more

24 customers mention "Energy level"24 positive0 negative

Customers appreciate the nutritional supplement's energy level. They report a significant increase in energy and stamina, with no crash. It helps reduce fatigue and improves their ability to perform without endurance issues.

"...more energy and not so much anxiety, I have take it once and I had enough energy and remain calm." Read more

"...I am an active senior male and use this supplement to increase my energy and add to my brain food regiment...." Read more

"...Carnitine is a neuronal energizer and is essential for the production of energy by the mitochondria, the "powerhouse" of the cell...." Read more

"First day using and noticed significant increase in energy and stamina. Will buy again and very impressed. PS I'm 71" Read more

20 customers mention "Pain level"16 positive4 negative

Customers find the product effective for relieving pain and discomfort. They report a significant reduction in overall symptoms beginning in less than a week. Many find it helps with neuropathy, fibromyalgia-related issues, stomach issues, and muscle stiffness and swelling. The supplement doesn't cause any discomfort.

"...I was AMAZED. I noticed a significant reduction in overall symptoms beginning in less than a week...." Read more

"...My pain levels have been a little lower (every little bit matters!)..." Read more

"...from taking the 4 supplements he recommended and being able to travel feeling great again! Get the book too!" Read more

"It appears to be healing my (severe) tennis elbo and thoracic back swelling pain and stiffness...." Read more

14 customers mention "Quality"14 positive0 negative

Customers find the nutritional supplement effective and reliable. They consider Doctors Best a trustworthy brand. The product helps with endurance and normalcy.

"...My capsules seem to be consistent and well made. I know is that it helps me think better again after CFS and stroke...." Read more

"...which had been erratic and skipping beats became normal again and steady. That was 2 months ago...." Read more

"I think all of my family members noticed more endurance in sports. Which is great for my late 60s parents. Keeps them active in tennis...." Read more

"...I believe Doctors Best is a trust worthy brand and the price is ok." Read more

9 customers mention "Mental clarity"9 positive0 negative

Customers like the mental clarity. They say it works and helps them focus longer. They feel sharper mentally and on point with directions.

"...I have felt a little sharper mentally as well. Have not noticed any side effects...." Read more

"...I do have a nearly photographic memory, but this seemed to clear my mind, even when I was sleepy. I'm going to buy more!" Read more

"...Originally began taking it to improve short-term memory and to increase focus. Memory improved in a couple days. Focus still could use improvement...." Read more

"My memory feels very fresh and I feel very on point with directions and other activities that require quick thought...." Read more

Good product for exercise (and other things)
5 out of 5 stars
Good product for exercise (and other things)
While it's label mentions better "mood", I haven't seen a lot of studies that support that. However there are studies that support some other things.It's been shown to help with:- exercise- decreasing fat mass- fatigue- sperm quality- symptoms of intermittent claudication- few othersFor most people, it'll help them once they get going in their exercise. Once the muscles move from using glucose to fats, this is where the product would help.You would want to look up how to take it online for your benefit. But I personally take it in the morning and before any exercise (30 minutes before).See attached photo or video for pill and bottle size.**Hit helpful if this helped**
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Top reviews from the United States

  • Reviewed in the United States on August 28, 2024
    Flavor Name: UnflavoredSize: 120VCVerified Purchase
    The product came sealed and in great conditions, I usually use it to have more energy and not so much anxiety, I have take it once and I had enough energy and remain calm.
  • Reviewed in the United States on January 3, 2024
    Flavor Name: UnflavoredSize: 120VCVerified Purchase
    I've been taking ALC since I caught notice of an article and continued to research it approx. 18 years ago. I am an active senior male and use this supplement to increase my energy and add to my brain food regiment. I prefer Doctors Best for this supplement and find it the highest quality for the price (only wished it were cheaper).
    5 people found this helpful
    Report
  • Reviewed in the United States on September 13, 2013
    Flavor Name: UnflavoredSize: 120VCVerified Purchase
    Acetyl-L-Carnitine is one of the supplements that I have been giving my 93 year old mother to help reverse the effects an aging brain that has caused dementia. Most of the supplements are various antioxidants that help to protect brain cells and encourage new cell growth. This one is an amino acid which is a building block of protein that is naturally produced by the body and also found in food. As we age, the production of this protein declines.

    Acetyl-L-Carnitine readily convert to acetylcholine, a neurotransmitter that is critical for learning and concentration. Carnitine is a neuronal energizer and is essential for the production of energy by the mitochondria, the "powerhouse" of the cell. It transports fatty acids to the mitochondrial membrane where they are made into energy, and also helps remove waste products from the mitochondria-created energy production.

    In the last few months, I have done quite a lot of research on the reversal of dementia. This is only one of a few supplements that will support regeneration of new brain cells. Many supply various antioxidants that the body no longer produces, some rebuild mitochondria, and some rebuild neurons and help to develop new synaptic connections. Brain cells that have been killed by dementia can never be resurrected, but the brain will constantly grow if given the nutrients and tools that it needs to do so.

    I won't go into all we have done for my mother, or all of the improvements we have seen, but I can assure you that dementia or Alzheimer's is not an end-all. There really are things that can be done to stop and even reverse both. I have seen the results in my mother. In addition, through diet and supplement, we have reduced her medications from 10 to 1, and, according to her doctor, she has the blood work of a 20 year old. Not bad for a 93 year old lady!!
    380 people found this helpful
    Report
  • Reviewed in the United States on December 2, 2023
    Flavor Name: UnflavoredSize: 120VCVerified Purchase
    Good product
  • Reviewed in the United States on March 27, 2024
    Flavor Name: UnflavoredSize: 120VCVerified Purchase
    First day using and noticed significant increase in energy and stamina. Will buy again and very impressed.
    PS I'm 71
    2 people found this helpful
    Report
  • Reviewed in the United States on June 10, 2018
    Flavor Name: UnflavoredSize: 120VCVerified Purchase
    Well, I have fibromyalgia, and a host of problems seem to come along with it as the years pass by. In the last year I have developed tingling, pins and needles and burning in hands, forearms, legs and feet. These have increased to an alarming amount, so I talked with my MD. He suggested gabapentin or lyrica, or possibly vitamin E. Well, I did NOT want to do prescription medications. The side effects for those are horrible (I am an RN and have seen first hand; and basically they don't really work.) So went on a hunt and Acetyl-L Carnitine came up in my research. So I looked at several, and then gave this a try. I was AMAZED. I noticed a significant reduction in overall symptoms beginning in less than a week. I have now been using the stuff for almost a month and am almost completely SYMPTOM FREE. One hold out spot on my great toe on my left foot, but that is significantly reduced. I am really pleased with how effective this has been for my " pins and needles". Give it a try. Maybe it will work as well for you.
    91 people found this helpful
    Report
  • Reviewed in the United States on April 9, 2024
    Flavor Name: UnflavoredSize: 120VCVerified Purchase
    I order these for my grandmother every time she needs them. She swears by them and loves them!
    3 people found this helpful
    Report
  • Reviewed in the United States on January 25, 2024
    Flavor Name: UnflavoredSize: 120VCVerified Purchase
    Was planning on repurchasing this product as I usually do but noticed the bottle looked different i'm not willing to pay the same price for a lesser quality product. Had no issue with original product but can't find any info on the reason for the supply change.
    9 people found this helpful
    Report

Top reviews from other countries

Translate all reviews to English
  • Amazon カスタマー
    5.0 out of 5 stars 汗が出る
    Reviewed in Japan on August 4, 2023
    Flavor Name: UnflavoredSize: 120VCVerified Purchase
    太りにくい気がします。気持ちかもしれませんが…
  • KF****
    1.0 out of 5 stars Placebo
    Reviewed in Singapore on September 28, 2020
    Flavor Name: UnflavoredSize: 120VCVerified Purchase
    The placebo effect. Like taken nothing. No energy increase. May be works on others, but not to me.
  • Pandurang Ghawali
    4.0 out of 5 stars Very effective, but costly.
    Reviewed in India on September 8, 2018
    Flavor Name: UnflavoredSize: 120VCVerified Purchase
    Very nice and enrgetic!
  • 子供と遊ぼう
    5.0 out of 5 stars カプセルは少し大きい。
    Reviewed in Japan on July 30, 2017
    Flavor Name: UnflavoredSize: 120VCVerified Purchase
    カプセルが大きいので、飲みにくいです。
    普段は1錠、運動前は2錠飲んでいます。

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