In order to help you find a good product we’ve researched & compared the best N-acetylcysteine supplements on the market right now.

Top 10 N-Acetylcysteine Products Compared

1. Now Foods N-Acetyl-Cysteine

Now Foods N Acetyl Cysteine

Specs & Highlights

  • 1000mg of NAC
  • 120 tablets
  • Soy free
  • Nut free
  • Gluten free
  • Non-GMO
  • NOW goes beyond FDA standards to ensure high quality. Holding itself to the standards required of food manufacturing and pharmaceutical level exactness.
  • Uses Ageless Oxygen Absorbers in its packaging to ensure that product is not affected by light, heat or gas in the environment.

2. Swanson NAC N-Acetyl Cysteine

Swanson Nac N Acetyl Cysteine

Specs & Highlights

  • 600mg of NAC
  • 100 capsules
  • Other ingredients include gelatin and magnesium stearate
  • Recommended dosage is 1 capsule per day with water
  • Company offers a money back guarantee

3. BulkSupplements Pure NAC (N-Acetyl L-Cysteine) Powder

BulkSupplements Pure NAC (N-Acetyl L-Cysteine) Powder

This powdered form of NAC makes the supplement more bioavailable meaning that the body starts to digest and absorb it immediately. This supplement is sometimes taken along with Vitamin B6, Vitamin E and a selenium supplement to further aid in absorption and effectiveness.

Specs & Highlights

  • 600mg of NAC
  • Recommended dosage is 600mg (about ¼ of a teaspoon) 1 to 3 times per day.
  • No sugar, soy, dairy, yeast or gluten are found in this supplement.

4. Jarrow Formulas N-A-C

Jarrow Formulas N-A- C (N-Acetyl- L-Cysteine)

This supplement employs a combination of Quick Release and Sustained Release formulas at a 1/3 to 2/3 ratio. The ratio will release the compound over the course of 8 hours.

Specs & Highlights

  • 500mg of NAC
  • 100 bilayer tablets
  • Patented formula
  • Other ingredients include carbomer, cellulose, calcium phosphate, beet root powder, which adds color, stearic acid, magnesium stearate, and silicon dioxide
  • Gluten free
  • Soy free
  • Nut free
  • Shellfish free

5. Source Naturals N-Acetyl Cysteine

Source Naturals N-Acetyl Cysteine 1000mg

Specs & Highlights

  • 600mg of NAC
  • 600mg tablets are also available in 30, 60 and 120 tablets bottles
  • Dairy free
  • Gluten free
  • No artificial colors, flavors or fragrances
  • No salt or other preservatives
  • Non-active ingredients include dibasic calcium phosphate, stearic acid, microcrystalline cellulose, colloidal silicon dioxide, modified cellulose gum, and magnesium stearate.

6. Nutricost N-Acetyl L-Cysteine

Nutricost N-Acetyl L-Cysteine (NAC) 600mg

Specs & Highlights

  • 600mg of NAC
  • 180 capsules per bottle
  • Made in the USA
  • Other ingredients include gelatin and rice flour
  • Non-GMO

7. Thorne Research N-Acetylcysteine (NAC)

Thorne Research N Acetylcysteine

Specs & Highlights

  • 500mg of NAC
  • 90 capsules
  • Other ingredients include hypromellose, which is derived from cellulose, leucine and silicon dioxide.
  • Capsules are vegetarian
  • Suggested dose is 1 capsule two to three times per day.

8. Life Extension N-Acetyl Cysteine

Life Extension N-Acetyl Cysteine 600 Mg

Specs & Highlights

  • 600mg of NAC
  • 60 vegetarian capsules
  • Dairy free
  • Nuts free
  • Shellfish free
  • Gluten free
  • Contains no sugar, artificial sweeteners or preservatives
  • Other ingredients include gelatin, vegetable stearate and silica
  • Take 1 capsule 1 to 3 times a day
  • Drink 6 to 8 glasses of water a day when taking the supplement to avoid development of kidney stones.

9. Best Naturals NAC N-Acetyl L-Cysteine

Best Naturals Nac N Acetyl L Cysteine

Specs & Highlights

  • 600mg of NAC
  • 250 capsules per bottle
  • Made in the USA
  • Purity & Potency are guaranteed
  • Meets GMP standards
  • Other ingredients include gelatin, silica and vegetable stearate
  • Recommended dosage is 1 capsule one to three times a day on an empty stomach with fruit juice.
  • No artificial colors, fragrances or colors
  • No preservatives, sugar, starch, egg, lactose gluten or shellfish
  • Sodium free

10. Designs for Health – N-Acetyl-L-Cysteine NAC

Designs for Health - N-Acetyl- L-Cysteine NAC

Specs & Highlights

  • 900mg of NAC
  • 120 capsules
  • Other ingredients include vegetable stearates and microcrystalline cellulose.
  • Non-GMO
  • Contains no wheat, soy protein, eggs, dairy, sugar, or yeast.
  • No artificial colors, flavors or preservatives.
  • Recommended dosage is one capsule per day on an empty stomach.

Frequently Asked Questions About N-Acetylcysteine Supplements

What is N-Acetylcysteine?

N-Acetyl Cysteine(NAC) is a compound that delivers the amino acid L-Cysteine into the body. This amino acid is an important, naturally occurring component found in foods like cheeses, other dairy products, meats and oats; typically in high protein foods. NAC has many medicinal benefits.

By introducing the amino acid L-Cysteine into the body, this compound triggers the body to form the antioxidant glutathione, which is a key component in healthy cell formation. Since cell production occurs in all systems of the body, this compound can have positive effects across the board.

How Do I Take N-Acetylcysteine?

Anywhere from 200 – 1500mg per day might be appropriate. In the case of acetaminophen poisoning, health care providers may choose to administer N-acetyl cysteine intravenously. For certain lung related health problems, this compound can be administered through inhalers to ease symptoms and aid healing. Always check with your doctor before self-prescribing because there are negative interactions with certain drugs. This compound also has a negative interaction with charcoal, which is often used as a detox agent.

There are some wonderful studies out there detailing the research being done on this compound and how it aids the body. It has caused swelling in the nose and mouth when taken as an inhaler and it is recommended that it should not be taken by women who are pregnant, may become pregnant or are breast feeding. This precaution is because studies have not been conducted to prove if there would be any adverse effects to the baby.

How Do I Pick a Good NAC Product?

When choosing a supplement, it is important to look at not just the active ingredients, but also what the capsule is made from and what inactive ingredients are included. There are capsules out there that are very thick and hard to digest. It is not unheard of for the component you are purchasing to pass through your system unabsorbed because it took the casing too long to dissolve.

As a general rule, when purchasing supplements, you want to find products that include as few extra ingredients as possible. Unless the packaging states that something is being included for a certain purpose, it most probably is unnecessary filler, even if it has an important sounding name.

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