NAC (N-Acetyl Cysteine) vs Valerian Root
Immune vs Sleep · evidence-backed comparison
- • NAC (N-Acetyl Cysteine) has the stronger evidence base (strong (multiple rcts / meta-analyses)).
- • NAC (N-Acetyl Cysteine) has the broader effect profile across the 9 effect categories.
- • Valerian Root is cheaper per serving ($0.20 vs $0.22).
Side-by-side traits
| Trait | NAC (N-Acetyl Cysteine) | Valerian Root |
|---|---|---|
Category | Immune | Sleep |
Active compound | N-acetyl L-cysteine | Valerenic acid |
Form available | Capsule, Powder | Capsule, Liquid, Powder |
Source | synthetic | plant |
Typical dose | 600–1800 mg daily | 300–600 mg extract |
Dose range | 600–1800 mg | 300–600 mg |
Loading protocol | — | — |
Best taken with | empty stomach or with food | 30–60 min before bed |
Best time of day | any | evening |
Bioavailability How efficiently the body absorbs and utilizes the compound. | Moderate (3/5) | Moderate (3/5) |
Onset time | Acute and cumulative | Cumulative: 2–4 weeks |
Half-life | ~6 hours | — |
Evidence level Quality and quantity of human research. | Strong (multiple RCTs / meta-analyses) | Limited (small studies) |
Overall effect Subjective effect magnitude. | Moderate (3/5) | Low (2/5) |
Muscle / strength | Low (2/5) | Very Low (1/5) |
Physical energy | Low (2/5) | Very Low (1/5) |
Focus / cognition | Low (2/5) | Very Low (1/5) |
Mood / stress | Moderate (3/5) | Moderate (3/5) |
Sleep quality | Very Low (1/5) | High (4/5) |
Immunity | High (4/5) | Very Low (1/5) |
Recovery Post-exercise recovery support. | Moderate (3/5) | Very Low (1/5) |
Longevity / healthspan | High (4/5) | Very Low (1/5) |
Safety rating 5 = exceptionally well-tolerated; 1 = significant risk profile. | High (4/5) | High (4/5) |
Price per serving Approximate USD per typical daily dose. | $0.22 | $0.20 |
Vegan friendly | Yes | Yes |
Gluten free | Yes | Yes |
3rd-party tested | Yes | Yes |
About NAC (N-Acetyl Cysteine)
Glutathione precursor used clinically for liver protection (acetaminophen overdose). Strong evidence for OCD, COPD, and PCOS.
About Valerian Root
Traditional sedative herb that interacts with GABA receptors. Effects build over 2–4 weeks; less acute than melatonin.
Vetted brands, third-party testing, ships worldwide.
Vetted brands, third-party testing, ships worldwide.
NAC (N-Acetyl Cysteine) safety
Common side effects:
- • Sulfur smell
- • GI upset
- • Headache
Avoid if:
- • Asthma (rare bronchospasm)
Drug interactions:
- • Nitroglycerin
- • Anticoagulants
- • Activated charcoal
Valerian Root safety
Common side effects:
- • Strong odor
- • Morning grogginess
- • Headache
Avoid if:
- • Liver disease
- • Surgery (2 weeks before)
Drug interactions:
- • Sedatives
- • Anesthetics
- • Alcohol
Common uses
- • Liver protection
- • Lung health
- • OCD / mental health
- • PCOS
Stacks well with: Vitamin C, Selenium (Selenomethionine)
Common uses
- • Sleep
- • Anxiety
- • Restlessness
Stacks well with: Magnesium Glycinate
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Medical disclaimer
SupplementDuel is for educational purposes only and is not medical advice. Consult a physician before starting, stopping, or combining supplements — especially if you are pregnant, breastfeeding, take prescription medication, or have a chronic condition.