N-acetyl l-cystine

Common questions

Is N-acetyl l-cystine healthy?

N-acetyl l-cystine scores 70/100 on Scout's independent analysis of ingredients, additives, and lab results — a fair-to-good score — solid, with tradeoffs. This supplement contains several common additives such as magnesium stearate and silicon dioxide, which are used for manufacturing purposes but do not provide nutritional benefits.

How processed is N-acetyl l-cystine?

N-acetyl l-cystine is NOVA Group 3: Processed Foods.

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N-acetyl l-cystine

NAC
70 Good

Analysis updated June 2026 · How Scout scores

$11.25 · 60 count · $0.19 / count
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At a glance

Beneficial ingredients 0
Harmful ingredients 0
Category Brain
Summary

This supplement contains several common additives such as magnesium stearate and silicon dioxide, which are used for manufacturing purposes but do not provide nutritional benefits. While these ingredients are generally recognized as safe, they can inhibit nutrient absorption and are highly processed. The formulation lacks harmful artificial additives, but the presence of these processing agents affects its overall quality compared to cleaner supplements.

Key ingredients 6

Dicalcium Phosphate
Neutral

Dicalcium phosphate is commonly used as a dietary supplement to provide calcium and phosphorus. It is a processed ingredient often used as a filler or binder in tablets. While it provides essential minerals, its primary role in supplements is structural rather than nutritional.

Benefits

Provides calcium and phosphorus, which are essential for bone health.

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Microcrystalline Cellulose
Neutral

Microcrystalline cellulose is a refined wood pulp used as a texturizer, anti-caking agent, and bulking agent in food production. It is an inert substance that does not provide nutritional benefits. Its primary function is to improve the consistency and stability of the product.

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Croscarmellose Sodium
Neutral

Croscarmellose sodium is a cross-linked polymer used as a disintegrant in pharmaceutical formulations. It helps tablets dissolve more quickly in the digestive tract. It is considered safe for consumption in small amounts.

Benefits

Facilitates the breakdown and absorption of tablets in the digestive system.

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Stearic Acid
Neutral

Stearic acid is a saturated fatty acid used as a lubricant in the manufacturing of supplements. It is naturally found in animal and plant fats. While it is generally considered safe, excessive intake of saturated fats can be a concern.

Risks

Excessive intake of saturated fats may contribute to cardiovascular issues.

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Magnesium Stearate
Neutral

Standard formulation ingredient — neither beneficial nor harmful at typical use.

Risks

May inhibit nutrient absorption when consumed in large quantities.

See more about Magnesium Stearate →
Silicon Dioxide
Neutral

Standard formulation ingredient — neither beneficial nor harmful at typical use.

See more about Silicon Dioxide →

Processing

Group 3 · Processed

Processed Foods

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Amazon pricing & content

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