Swanson NAC N-Acetyl Cysteine 600 mg – 100 Capsules | Amino Acid Supplement
Swanson NAC N-Acetyl Cysteine 600 mg – 100 Capsules | Amino Acid Supplement
Swanson NAC delivers 600 mg of N-acetyl cysteine per capsule, in a 100-capsule bottle with a one-a-day serving.
N-acetyl cysteine (NAC) is a stable form of the amino acid cysteine, which the body uses as a precursor in its own production of glutathione. This is a single-ingredient amino acid supplement with no added vitamins or minerals, so it suits people who want NAC on its own at a straightforward 600 mg dose rather than inside a multi-ingredient blend.
At a Glance
- Format: single-ingredient amino acid capsule
- NAC per capsule: 600 mg N-acetyl cysteine
- Added vitamins/minerals: none
- Pack & serving: 100 capsules, 1 per day (100-day supply)
- Capsule: vegan (hypromellose) — suitable for vegetarians and vegans
- Status & price: food supplement, €21.95 inc. VAT
- Delivery: ships from Dublin, free over €75, no customs duty
Supplement Facts
| Per 1 capsule | Amount |
|---|---|
| N-Acetyl Cysteine (NAC) | 600 mg |
Full ingredients: N-acetyl cysteine, vegan capsule (hypromellose), magnesium stearate. No daily value established for N-acetyl cysteine. Contains no added vitamins or minerals.
Key Features
- 600 mg N-acetyl cysteine per capsule — a clear, single dose with nothing diluting it
- Single-ingredient formula: NAC only, no fillers beyond the capsule and flow agent
- Precursor to glutathione, which the body produces naturally
- 100 capsules at one per day — a 100-day supply per bottle
- Vegan capsule (hypromellose) — suitable for vegetarians and vegans
- Ships from our Dublin warehouse: tracked Irish delivery, no customs charge
Is this the right NAC for you?
This is a single-ingredient NAC at 600 mg in a vegan capsule. If you want NAC paired with selenium, or a different format, compare the alternatives in the collection.
• Browse all options: NAC & Antioxidants collection
• Read first: NAC in Ireland — benefits & dosage guide
• Background: NAC supplement Ireland — full guide
How to Take
Adults: take one capsule per day with water, or as directed by a healthcare professional. Do not exceed the recommended daily dose. For adults aged 18 and over.
This product is a food supplement and is not intended to diagnose, treat, cure or prevent any disease or health condition. No authorised EU health claim is made for N-acetyl cysteine or glutathione on this page. Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle.
Frequently Asked Questions
What is Swanson NAC (N-acetyl cysteine)?
Swanson NAC is a food supplement providing 600 mg of N-acetyl cysteine per capsule. NAC is a stable form of the amino acid cysteine and acts as a precursor to glutathione, a compound the body produces naturally. This pack contains 100 capsules in a one-capsule-per-day serving.
How much NAC is in each capsule?
Each capsule provides 600 mg of N-acetyl cysteine. The serving size is one capsule per day, so one bottle of 100 capsules is a 100-day supply at the standard serving.
What is the difference between NAC and glutathione?
NAC (N-acetyl cysteine) is a precursor the body uses in the production of glutathione. They are different compounds: NAC supplies cysteine, which is one of the building blocks the body uses to make glutathione. This is a description of a biochemical relationship and is not a health claim.
Is Swanson NAC suitable for vegetarians or vegans?
Yes. This version uses a vegan capsule made from hypromellose (a plant-derived cellulose), so it is suitable for both vegetarians and vegans. The only other ingredient is magnesium stearate.
Is NAC legal to buy in Ireland?
Yes. N-acetyl cysteine is sold legally as a food supplement in Ireland. Swanson NAC ships from our Dublin warehouse, so there is no customs charge or import duty for Irish orders.
How do I take Swanson NAC?
Adults take one capsule per day with water, or as advised by a healthcare professional. Do not exceed the recommended daily dose. The product is for adults aged 18 and over.
What are the other ingredients?
Besides the 600 mg of N-acetyl cysteine, the capsule is made from hypromellose (a plant-based vegan capsule) and the formula contains magnesium stearate. There are no added vitamins or minerals in this product.
Are there any precautions?
If you are pregnant, breastfeeding, taking medication, or under medical supervision, consult your doctor before use. Discontinue use and seek advice if any adverse reaction occurs. Keep out of reach of children and do not use if the seal is broken or missing. For adults 18+ only.
Where does Swanson NAC ship from, and are there customs charges?
This product ships from our Dublin warehouse within Ireland, so there is no customs duty or import VAT to pay on delivery, including for orders placed after the July 2026 customs changes. Delivery is tracked across Ireland and free on orders over €75.
Product details: Swanson · N-acetyl cysteine 600 mg · 100 vegan (hypromellose) capsules · 1 capsule per serving · authorised Irish retailer for Swanson · €21.95 inc. VAT.
Advisory Information (Ireland)
Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle. If you are pregnant, breastfeeding, taking any medication, or under medical supervision, consult your doctor or healthcare professional before use. Suitable for vegetarians and vegans (vegan hypromellose capsule). Keep out of reach of children. Do not use if the seal under the cap is broken or missing. For adults aged 18 and over. Do not exceed the stated recommended daily dose. This product is a food supplement and is not a medicine. Food supplement information is regulated in Ireland by the FSAI (Food Safety Authority of Ireland) and the HPRA.