S-Acetyl Glutathione 300mg | High-Absorption Vegan Capsules | Ayaani
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- 300mg S-Acetyl Glutathione per capsule – the stabilised, high-absorption form of the body's master antioxidant
- Acetylated form designed for enhanced oral stability and absorption compared to standard reduced glutathione
- 60 vegan capsules per bottle – 60-day supply at 1 capsule per day
- Plant-based capsule (vegetable cellulose) – no gelatine, suitable for vegans and vegetarians
- Clean formula – rice flour and vegetable magnesium stearate only
- UK developed & GMP certified | Third-party tested | Free UK delivery on all orders
The smarter way to supplement glutathione – in a once-daily vegan capsule
Standard reduced glutathione faces a fundamental challenge as an oral supplement — it can be broken down by stomach acid and digestive enzymes before it reaches the bloodstream, which limits how much actually gets through. Ayaani S-Acetyl Glutathione uses a stabilised, acetylated form that is designed to be more resistant to this digestive breakdown, allowing it to pass through the intestinal wall intact before being converted back to active glutathione within cells.
One capsule per day. Clean formula. Advanced form. 60-day supply.
Why S-Acetyl Glutathione?
Glutathione is a naturally occurring antioxidant produced in every cell of the body. It plays a central role in protecting cells from oxidative stress, supporting the body's natural detoxification processes, and maintaining immune function. However, oral glutathione supplementation presents a well-recognised absorption challenge — the molecule can be degraded in the digestive tract before it reaches circulation.
S-Acetyl Glutathione addresses this by attaching an acetyl group to the glutathione molecule. This modification:
- Increases oral stability – the acetyl group protects the molecule from degradation during digestion
- Supports intestinal absorption – the stabilised form is designed to pass through the intestinal wall intact
- Converts within cells – once absorbed, cells can readily convert S-Acetyl Glutathione back to its active reduced form
Research into this acetylated form suggests it may offer meaningfully better bioavailability compared to standard oral reduced glutathione, making it an appealing option for those who want to support their body's glutathione levels more effectively through daily supplementation.
UK regulatory context
The European Food Safety Authority (EFSA) has been reviewing S-Acetyl-L-Glutathione for authorisation as a novel food ingredient, with a proposed daily maximum intake of 300mg for adults. Our daily serving of 300mg aligns with this proposed level. Ayaani S-Acetyl Glutathione is developed in compliance with all applicable UK food supplement regulations and manufactured to GMP standards.
Product overview
S-Acetyl Glutathione 300mg – Vegan Capsules
- 60 vegan capsules per bottle – 60-day supply
- 1 capsule per day
- Vegan | Vegetarian | Gluten-free | Gelatine-free
Full ingredient list: S-Acetyl Glutathione 300mg, Plant-based capsule (vegetable cellulose), Rice flour, Vegetable-source magnesium stearate.
Free from: Gluten, dairy, soy, nuts, gelatine, artificial colours, artificial flavours, preservatives.
Supplement facts
| Ingredient | Per capsule (daily serving) | % NRV |
|---|---|---|
| S-Acetyl Glutathione | 300mg | † |
* NRV = Nutrient Reference Value. † NRV not established. Serving size: 1 capsule. Servings per bottle: 60.
How we compare
| Feature | Ayaani S-Acetyl Glutathione | Standard reduced glutathione |
|---|---|---|
| Glutathione form | S-Acetyl (stabilised) | Reduced (can degrade in digestion) |
| Oral stability | High – acetyl group protects molecule | Low – easily broken down |
| Bioavailability | Designed for enhanced absorption | Limited due to digestive breakdown |
| Daily dose | 300mg – aligns with EFSA proposed limit | Varies widely |
| Capsule type | Vegan (vegetable cellulose) | Often gelatine |
| Servings per bottle | 60 – 60-day supply | Often 30 days only |
| UK developed & GMP certified | Yes | Varies |
| Third-party tested | Yes | Rarely disclosed |
Key ingredients and their roles
| Ingredient | Per serving | What it does |
|---|---|---|
| S-Acetyl Glutathione | 300mg | A stabilised form of glutathione — the body's master antioxidant — where an acetyl group is attached to improve oral stability and absorption. Designed to resist degradation in the digestive tract and be absorbed intact, after which cells convert it back to active reduced glutathione to support cellular antioxidant defences and natural detoxification pathways. |
How to use
Take 1 capsule daily with water, preferably with a meal. Consistent daily use is recommended for optimal support.
Storage: Store in a cool, dry place away from direct sunlight. Keep container tightly closed after use. Keep out of reach of children.
Why choose Ayaani
- Advanced stabilised form: S-Acetyl Glutathione — designed for enhanced oral stability and absorption
- Optimal daily dose: 300mg — aligns with EFSA's proposed daily maximum for this form
- Vegan-friendly: Plant-based vegetable cellulose capsules, no gelatine or animal-derived ingredients
- Clean formula: No unnecessary fillers — just rice flour and vegetable magnesium stearate
- UK developed & GMP certified: Formulated and manufactured to Good Manufacturing Practice standards
- Third-party tested: Regular independent verification of purity and potency
- Excellent value: 60 capsules — a full 60-day supply in every bottle
- Free UK delivery on all orders
UK Developed GMP Certified Vegan Friendly High-Absorption Form Gluten-Free Gelatine-Free Third-Party Tested 60-Day Supply
Frequently asked questions
How long before I see results?
Most customers take S-Acetyl Glutathione consistently for several weeks before noticing improvements. Glutathione works gradually as your body's levels build over time. Individual experiences vary based on diet, lifestyle, and your body's unique needs.
What makes S-Acetyl Glutathione better than regular glutathione?
The acetyl group is designed to protect the glutathione molecule during digestion. Standard reduced glutathione can be broken down by stomach acid and digestive enzymes before it reaches the bloodstream. S-Acetyl Glutathione's stabilised form allows it to pass through the digestive tract intact and be converted back to active glutathione within cells — making it a meaningfully more bioavailable option for oral supplementation.
Why is the dosage 300mg?
Our 300mg dosage aligns with the proposed daily maximum intake under review by the European Food Safety Authority (EFSA) for S-Acetyl-L-Glutathione as a novel food ingredient. This represents the scientifically evaluated level for daily supplementation.
Can I take it with other Ayaani products?
Yes. Many customers pair S-Acetyl Glutathione with vitamin C products such as our Glutathione Effervescent, or use it alongside our 1500mg Glutathione Softgels at a different time of day. Vitamin C is known to support glutathione recycling in the body. Always follow label directions and consider consulting a healthcare professional when combining supplements.
Is it suitable for vegans and vegetarians?
Yes. Our capsules are plant-based (vegetable cellulose) and contain no gelatine or animal-derived ingredients. Suitable for both vegans and vegetarians.
How should I store it?
Store in a cool, dry place away from direct sunlight. Keep container tightly closed after use. Keep out of reach of children.
Does it contain any common allergens?
Free from gluten, dairy, soy, nuts and gelatine. No artificial colours, flavours or preservatives. Always check the label on the packaging for the most current allergen information.
How long will one bottle last?
60 capsules per bottle — a 60-day supply at 1 capsule daily.
Can I take this if I am pregnant or breastfeeding?
If you are pregnant, breastfeeding, planning to become pregnant, under 18, or have a known medical condition, please consult your healthcare professional before use.
Safety information
Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Keep out of reach of children.
Do not exceed the recommended daily dose. If you are pregnant, breastfeeding, planning to become pregnant, or taking medication, consult your healthcare professional before use. Not intended for use by persons under 18. Store in a cool, dry place away from direct sunlight.
Allergen information: Free from gluten, dairy, soy, nuts and gelatine. Always refer to the label on the product packaging for the most up-to-date allergen and ingredient information.
If you experience an adverse reaction, discontinue use and seek medical advice. Adverse reactions may be reported via the MHRA Yellow Card Scheme at yellowcard.mhra.gov.uk.
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