Updated: March 20, 2026
| Feature | NOW Foods NAC 1000mg | Jarrow Formulas Methyl B-12 5000mcg |
|---|---|---|
| Price | $24.95 | $19.95 |
| Rating | 4.4/5.0 | 4.6/5.0 |
| Reviews | 2345 reviews | 2134 reviews |
| Brand | NOW Foods | Jarrow Formulas |

N-Acetyl Cysteine. Precursor to glutathione. Supports liver detoxification and respiratory health. Powerful antioxidant.

High-potency methylcobalamin B12. Lozenge form for optimal absorption. Supports brain function, energy, and nerve health.
Both NOW Foods NAC 1000mg and Jarrow Formulas Methyl B-12 5000mcg are highly effective heavy metal detox products. Jarrow Formulas Methyl B-12 5000mcg has a slightly higher rating (4.6/5.0 vs 4.4/5.0), suggesting users find it more effective.
Jarrow Formulas Methyl B-12 5000mcg is more affordable at $19.95 compared to NOW Foods NAC 1000mg at $24.95, making it better value for budget-conscious buyers.
NOW Foods NAC 1000mg has more customer reviews (2345 vs 2134), indicating it's more popular and has been tested by more users.
Choose NOW Foods NAC 1000mg if:
Choose Jarrow Formulas Methyl B-12 5000mcg if:
Both NOW Foods NAC 1000mg and Jarrow Formulas Methyl B-12 5000mcg are excellent heavy metal detox options. We give the edge to Jarrow Formulas Methyl B-12 5000mcg for its higher rating and better value.
For more heavy metal detox options, check out our complete Heavy Metal Detox guide.