Ear Health
NAC (Hearing Protection)
Also known as: N-Acetyl Cysteine (hearing)
May protect against noise-induced hearing loss. Used preventatively before loud noise exposure.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every NAC (Hearing Protection) product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | Life Extension N-Acetyl-L-Cysteine | 94 A | $0.20 |
| 2 | Sports Research NAC Capsules, N-Acetyl-Cysteine, 600 mg | 92 A | $0.23 |
| 3 | NOW Foods NAC | 89 A | $0.12 |
| 4 | Country Life NAC, N-Acetyl Cysteine 750 mg | 86 A- | $0.51 |
| 5 | NOW Foods NAC Quercetin & Zinc | 84 A- | $0.57 |
| 6 | Swanson Ultimate Respiratory Defense with NAC and Quercetin | 84 A- | $0.53 |
| 7 | Carlson NAC (N-Acetyl Cysteine) | 84 A- | $0.33 |
| 8 | NutraBio Immune | 83 A- | $1.33 |
| 9 | NOW Foods Clinical Strength Ocu Support | 81 A- | $0.73 |
| 10 | Bluebonnet Nutrition JUSTBREATHE | 75 B+ | $1.03 |
| 11 | Carlson Glutathione Booster | 74 B+ | $0.62 |
| 12 | Country Life Aller-Max | 74 B+ | $0.69 |
Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.
Common questions
How much NAC (Hearing Protection) should I take?
The typical range is 600-1200 mg before noise exposure. Preventative use
When should I take NAC (Hearing Protection)?
1-2 hours before loud noise. Optional.
Which form of NAC (Hearing Protection) is best?
Capsules — Same as regular NAC.
Is NAC (Hearing Protection) safe?
Commonly reported: GI upset. Serious warnings: None. Safe
Which NAC (Hearing Protection) supplement scores highest?
Life Extension N-Acetyl-L-Cysteine, at 94/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Primary uses
- Hearing protection
- Noise damage prevention
- Tinnitus
How it works
- Antioxidant protection
- Reduces noise-induced oxidative stress
- May protect hair cells
Dosage
- Typical range
- 600-1200 mg before noise exposure
- Timing
- 1-2 hours before loud noise
- With food
- Optional
- Duration
- Preventative use
- Special populations
- Musicians, loud noise exposure
Forms
- Capsules
Safety
Common side effects
- GI upset
Contraindications
- None
Products containing NAC (Hearing Protection)
Top-scoring supplements in our catalog that list NAC (Hearing Protection) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Noise-induced hearing loss prevention
Grade B: Some human trials support key claims; further confirmation needed.
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.