NAC supplement: what it is and how to take it
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NAC (N-acetyl cysteine) is a form of the amino acid cysteine, sold as a food supplement. Ours is 600mg per capsule, and the label dose is one or two capsules a day with water, ideally between meals. NAC has no authorised health claims in Great Britain, so this guide covers what it is and how to take it, not what it does.
How to take NAC
| Question | Answer for our NAC 600mg |
|---|---|
| How much? | 1 capsule (600mg) or 2 capsules (1,200mg) a day |
| Maximum? | 2 capsules a day, unless a healthcare professional advises otherwise |
| With food? | Between meals is common. If it upsets your stomach, take it with food. |
| How long does a bottle last? | 120 capsules: four months at one a day, two months at two |
| Vegan? | Yes |
What NAC is
Cysteine is an amino acid found in protein foods such as meat, fish, eggs and pulses. NAC is a modified form of it, with an acetyl group attached, which is the form sold in capsules. Acetylcysteine is also used as a medicine in hospitals, which is a different use from a daily food supplement.
Can you take NAC with NMN?
Yes, there is no known interaction between them, and our NMN and NAC Bundle puts both in one order. Take NMN at any time and NAC between meals, or both together with breakfast if that is easier to remember. Our NMN stacking guide covers how to fit other supplements around them.
Who should check with a GP first
Anyone who is pregnant or breastfeeding, anyone taking prescription medicine, and anyone with a long-term health condition should speak to their GP or pharmacist before starting NAC. Take the label with you so they can see the dose.