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Best Acetyl L Carnitine Supplements

10 Best Acetyl L-Carnitine Supplements for 2019

If you’re looking for the best acetyl L-carnitine supplements to buy this year, then you’ve come to the right place

You can also get more info by jumping to our Acetyl L-Carnitine Supplements Guide.

Top 10 Acetyl L-Carnitine Supplements

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#1Now Foods Acetyl L Carnitine SNOW Foods Acetyl L-CarnitineGet it on Amazon
#2Doctor’s Best Acetyl L Carnitine With Biosint Carnitines SDoctor’s Best Acetyl-L-CarnitineGet it on Amazon
#3Jarrow Formulas Acetyl L Carnitine SJarrow Formulas Acetyl L-CarnitineGet it on Amazon
#4Bulksupplements Pure Acetyl L Carnitine SBulkSupplements Pure Acetyl L-CarnitineGet it on Amazon
#5Source Naturals Acetyl L Carnitine And Alpha Lipoic Acid SSource Naturals Acetyl L-CarnitineGet it on Amazon
#6Swanson Premium Acetyl L Carnitine SSwanson Premium Acetyl L-CarnitineGet it on Amazon
#7Mrm Acetyl L Carnitine SMRM Acetyl L-carnitineGet it on Amazon
#8We Like Vitamins Acetyl L Carnitine SWe Like Vitamins Acetyl L-CarnitineGet it on Amazon
#9Life Extension Acetyl L Carnitine SLife Extension Acetyl L CarnitineGet it on Amazon
#10Pure Encapsulations Acetyl L Carnitine SPure Encapsulations Acetyl-l-CarnitineGet it on Amazon

Acetyl L-Carnitine Supplements Guide

Ever feel sluggish or like your brain is lost in a fog? Acetyl-l-carnitine might help bring your brain out of the fog and boost your bodily energy. Found in many brain-boosting nootropics, Acetyl-l-carnitine is a naturally-occurring amino acid that helps the body produce energy. By enhancing the energy generation of mitochondrion throughout the body, Acetyl-l-carnitine works to synthesize acetylcholine, an important neurotransmitter (a chemical messenger) that relays information about nerve and brain functions.

There are many supplements on the market that contain Acetyl-l-carnitine, especially in conjunction with other neuro-boosters like Alpha Lipoic Acid. So, what makes Acetyl-l-carnitine such a popular supplement? What benefits do these supplements have, and who should take them? Read on to find out!

What Are Acetyl-l-carnitine Supplements?

Acetyl-l-carnitine is an amino acid the body makes that turns fat into energy. Since the body makes this amino acid on its own, Acetyl-l-carnitine is not considered to be an essential nutrient, but, taken as a supplement, Acetyl-l-carnitine works to enhance the body’s tissues’ natural ability to generate energy.


As with any supplement available on the market, there are some potential side effects to Acetyl-l-carnitine supplements. Although Acetyl-l-carnitine supplements are considered to be safe in all three forms that they come in, they might be dangerous for people with low thyroid levels (due to disorders like Hypothyroidism) to take since Carnitine might further impair thyroid hormone production.

Acetyl-l-carnitine is known to produce negative side-effects in those with:

  • High blood pressure
  • Breathing issues
  • Kidney failure
  • An allergy to Acetyl-l-carnitine
  • Peripheral vascular disease
  • Alcoholism
  • Liver cirrhosis
  • Hepatitis C
  • Sleep disorders or disruptions
  • Digestive problems
  • Bipolar disorder (it can increase psychosis)

Typically, side-effects associated with taking Acetyl-l-carnitine are:

  • Stomach pain
  • Diarrhea
  • Nausea
  • Vomiting
  • Sleep disruption
  • Headaches
  • Lowered blood sugar and elevated triglycerides in those with diabetes
  • Psychosis in individuals with bipolar disorder

Acetyl-l-carnitine is also not recommended for children, women who are pregnant, women who wish to become pregnant, or women who are lactating. It is currently unknown if Acetyl-l-carnitine can negatively affect pregnant women and children under the age of 18. Anyone with a pre-existing condition or who is already taking other medications should consult a doctor before taking Acetyl-l-carnitine, as it is known to interact with some drugs (such as beta-blockers, blood thinners, and calcium channel blockers).

Always speak with a medical professional or doctor before taking any supplements. Always read the product label for instructions and directions.

Taking Acetyl-l-carnitine Supplements

The low-end of the recommended daily dosage range for Acetyl-l-carnitine is 250 mg, while the high-end of the recommended daily dosage is 500 mg. The 500 mg dose (which can be taken together at once or split up into two 250 mg doses per day) is the ideal starting point for most adults looking to take Acetyl-l-carnitine. Older adults and those with certain medical conditions might require higher starting doses. Over time, doses might need to be adjusted in order to maximize their benefits. Any changes should be made with the oversight of a trained medical professional, so be sure to consult your doctor before switching up your daily dosage of Acetyl-l-carnitine.

Ideally, Acetyl-l-carnitine should be first taken in the morning with breakfast in order to optimize brain functioning at a peak time of the day. Acetyl-l-carnitine supplements can be split up and taken throughout the course of the day, which seems to work better for some consumers. However, it is not generally a good idea to take Acetyl-l-carnitine in the evening or at night since it can cause sleep disruptions. While most consumers can take Acetyl-l-carnitine supplements on an empty stomach, it is a good idea to try to take them with a meal. Those with gastrointestinal issues should ideally take these supplements with food so as to minimize the negative effects the food has on their digestion.

What to Look for in a Good Acetyl-l-carnitine Supplement

When you are setting out to look for an Acetyl-l-carnitine supplement to take (with your doctor’s consultation in mind, of course), be sure to look for high-quality products. First and foremost, you should be aware that there is a difference between Acetyl L-Carnitine and L-carnitine supplements. Acetyl-l-carnitine targets brain activity while L-carnitine focuses more on converting fat into energy, which Acetyl-l-carnitine does as well.

As should be the case with any supplement or over-the-counter medication you purchase online or from a store shelf, you should always check the product to ensure that it is securely packaged and that none of the pills within it seem discolored or give off a strange odor. There have been reports of people buying reputable brands of Acetyl-l-carnitine and getting potentially damaged or contaminated products.

Before you settle on which brand of Acetyl-l-carnitine supplements to buy, it can be helpful to read reviews left by consumers online. Reading through the reviews of the best Acetyl-l-carnitine supplements brands on a site like Amazon can help you sort out the high-quality products from the low-quality brands.

Oftentimes, supplements sold at cheaper prices are also cheaply made. Many of them will contain additives like magnesium stearate, talc, or titanium dioxide, as well as dyes. If possible, try to find brands that are allergen-free. If a product contains gluten, wheat, nuts or peanuts, dairy, or soy, your best bet is to look for something else, even if you are not allergic to any of those ingredients.

Many capsules are made from gelatin, so if you are a vegetarian or a vegan, you will have to look for capsules that are made from Hydroxypropyl methylcellulose (HPMC), which is a totally natural vegetable-derived cellulose used to manufacture supplements.

Remember, the information above is meant to give a general overview of Acetyl-l-carnitine supplements. It is not a definitive source on them. If you are considering taking these supplements, be sure to speak with your doctor to find out whether or not they might be the right supplements for you to take. Acetyl-l-carnitine has some unpleasant side effects, but many consumers also swear by it for helping to enhance their brain’s functioning abilities and bodies’ ability to generate energy.

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