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Cheapest Per Dose

Nutricost

Nutricost N-Acetyl L-Cysteine 600 mg, 180 Capsules Review

Name: Nutricost N-Acetyl L-Cysteine 600 mg, 180 Capsules
Brand: Nutricost
Availability: InStock

6.9/10SAC Product Score™

Nutricost is the no-frills value play: a single-ingredient 600 mg NAC, 180 capsules, at roughly $0.10 a dose — the cheapest per-dose pick from a mainstream third-party-tested brand. It's made in an NSF-registered, FDA-registered facility, which is a legitimate baseline. The honest caveat is a common label-reading trap: an NSF-certified facility is the plant, not a product seal, and Nutricost doesn't publish a per-batch Certificate of Analysis. For a plain, cheap, functional NAC that's fine. If you want documented per-batch proof, look up the list.

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Read the complete NAC (N-Acetylcysteine) guide →

▸ THE SCORE

How we built the SAC Product Score™ — 6.9/10

Form & Bioavailability25%6.8/10

Bare single-ingredient 600 mg NAC, no fillers or cofactors, no absorption enhancement. Functional and clean, just unremarkable.

Third-Party Testing & Purity25%6.5/10

Made in an NSF-registered, FDA-registered GMP facility and third-party tested, but the facility registration is not a per-product NSF seal, and no per-batch COA is published — the weakest documentation among our higher picks.

Dose vs Clinical Range20%7/10

600 mg/capsule fits the studied 600-1200 mg/day window; 180 caps gives a solid 6-month single-daily supply.

Tolerability & Safety15%7/10

Standard NAC tolerability with the usual sulfur note. No added cofactors means nothing extra to react to.

Value15%7.6/10

~$0.10/cap and 180 count make it the cheapest per dose from a mainstream tested brand — its core reason to exist. NOW edges it only on bottle size and lab transparency.

▸ SPECS

The product at a glance

Form: Plain single-ingredient NAC capsule
Dose: 600 mg per capsule
Count: 180 capsules (6-month supply at 1/day)
Testing: Third-party tested; made in NSF-registered / FDA-registered GMP facility (facility cert, not product seal)
Cost per dose: ~$0.10 per 600 mg capsule
Formula: No fillers or added cofactors

▸ TRUTH CHECK

Marketing claims vs. reality

Partial

“Made in an NSF-certified GMP facility”

True but easily misread — this refers to the facility's registration, not an NSF Certified for Sport product seal. The distinction matters: no individual batch carries NSF product certification.

Verified

“Cheapest per-dose among mainstream third-party-tested NAC brands”

At ~$0.10/capsule with a 180-count bottle from a tested brand, Nutricost is the lowest realistic cost per clinical dose on this list.

Not verified

“Provides published per-batch proof of purity”

Nutricost does not publish a per-batch Certificate of Analysis; buyers rely on general third-party testing rather than lot-specific documentation.

▸ THE DEEP DIVE

What our test actually found

01Read the NSF line carefully

'NSF-certified facility' is the building, not the bottle. It's a fine baseline, but it is not the same assurance as an NSF Certified for Sport product — a distinction the marketing blurs.

02Value is the whole pitch

There's no cofactor, no delivery tech, no premium sourcing story. You're buying effective NAC at the lowest cost — nothing more, nothing less, which for many buyers is exactly right.

▸ THE TRADE-OFFS

Pros & cons, no sugar-coating

Pros

Lowest cost per dose from a mainstream third-party-tested brand
Clean single-ingredient formula with no fillers or cofactors
180-count gives a 6-month single-daily supply
Clinical 600 mg dose

Cons

'NSF-certified facility' is a plant registration, not a per-product NSF seal
No per-batch Certificate of Analysis published
No absorption enhancement or quality story beyond price

▸ THE BOTTOM LINE

Buy it for the price, know the documentation limits

Nutricost is the honest cheapest-per-dose choice: effective 600 mg NAC with basic third-party testing at the lowest cost here. If published per-batch proof matters to you, step up to Life Extension's COA-on-request or NOW's transparent lab. If you just want cheap, functional NAC, this is the pick — just don't overread the NSF facility line.

Check Nutricost on Amazon

▸ ALTERNATIVES

If this doesn’t fit — try these

NOW NAC 600 mg with Selenium & Molybdenum

8/10

Nearly the same cost per dose but with a bigger bottle and a genuinely transparent in-house lab.

See it on the list →

Life Extension NAC 600 mg

7.2/10

Step up for a per-product Certificate of Analysis if published documentation matters to you.

See it on the list →

▸ RESEARCH