

🧠 Elevate your focus, fuel your future — brain health that means business.
Doctor’s Best Acetyl-L-Carnitine delivers a potent, bioavailable form of L-carnitine designed to enhance cognitive function by boosting mitochondrial energy and supporting neuron health. This vegan, non-GMO, gluten- and soy-free formula crosses the blood-brain barrier to improve memory, learning, and mental alertness, making it an essential daily supplement for professionals seeking sustained brain performance.































| ASIN | B000NRXO8A |
| Best Sellers Rank | #38,719 in Health & Household ( See Top 100 in Health & Household ) #40 in Acetyl-L-Carnitine Nutritional Supplements #2,457 in Sales & Deals |
| Customer Reviews | 4.5 4.5 out of 5 stars (800) |
| Date First Available | June 4, 2004 |
| Department | Health and Beauty>Health and Wellness |
| Is Discontinued By Manufacturer | No |
| Item model number | DRB-00152 |
| Manufacturer | Doctor's Best |
| Product Dimensions | 2.38 x 2.38 x 4.44 inches; 4.94 ounces |
R**T
ALCAR Supplement
This is a great supplement from a recommended brand that delivers reliable results. It has no taste whatsoever, making it easy to take daily without any flavor issues or aftertaste. Consistent quality that supports my routine smoothly. Capsules swallow easily and store without clumping. Feels like a trustworthy addition for long-term use. Solid value from a proven name.
M**E
Part of a collection of supplements that charge the mitochondria
Capsules easy to swallow. Without a scent or taste. A part of a collection of supplements to charge ATP to mitochondria
I**L
Has been helping my fibromyalgia-related issues...
I have fibromyalgia and am always looking for things that will provide any help at all - for pain, for muscle issues, or for mental acuity to combat "fibrofog." I know that sometimes meds / supplements that help one person with fibromyalgia may not be effective for others, but this has been working for me. I am in my fourth week of taking this and I have already seen a difference (I generally do 6-week trials). My pain levels have been a little lower (every little bit matters!) and my tolerance of activity has improved (which I guess for normal people might translate into "more energy"). I have felt a little sharper mentally as well. Have not noticed any side effects. Recommended dose is two pills with a meal (or up to four with two meals). The capsules are not tiny - 7/8" long and a uniform 1/4" in diameter, which is why I've docked it a star - but they're not the biggest pills I've ever seen (or even currently take), either. I've been taking one with breakfast and two with dinner. Came back to re-order!
J**.
One of many supplements that may reverse dementia and aging of the brain.
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!!
K**R
Great overall supplement.
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).
J**W
Very helpful for "Pins and Needles" paresthesia nerve pain...
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.
G**M
Helped me after post viral CFS and stroke
Not sure why thickness and sheerness are features to be rated. My capsules seem to be consistent and well made. I know is that it helps me think better again after CFS and stroke. Perhaps if you have a medical condition that impairs your body's ability to make acetylcholine (a neurotransmitter), this can help you, too. Ask your doctor if any contraindications for your personal medical condition. If not, could be worth a try. Definitely works for me.
A**ー
太りにくい気がします。気持ちかもしれませんが…
K***
The placebo effect. Like taken nothing. No energy increase. May be works on others, but not to me.
L**.
I recommend this product for taking before working out in the gym. Gives exceptional results for me.
P**I
Very nice and enrgetic!
K**D
Authentic! Very effective as mood stabilizer, mental health support. Fast delivery
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