Product information
- Ascorbic acid (pure vitamin C).
- D-Alpha-tocopheryl acid succinate (natural vitamin E).
Your shopping cart has
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service. apply.
Pure SOD of natural origin from Phytoplankton. Raw material: TetraSOD®. Microalgae grown under controlled conditions. Nature's greatest antioxidant power is in your hand! With vitamins C and E. Laboratory validated ORAC and CAA values. GMO-free.
Minimum purchase of units!
Warning about our product information
GUIDELINE DOCUMENT FOR COMPETENT AUTHORITIES IN THE FIELD OF COMPLIANCE CONTROL WITH EU LEGISLATION
Warning about our product information
Pure SOD of natural origin from Phytoplankton. Raw material: TetraSOD®. Microalgae grown under controlled conditions. Nature's greatest antioxidant power is in your hand! With vitamins C and E. Laboratory validated ORAC and CAA values. GMO-free.
Remarkable aspects:
No Preservatives
Fish Free
Egg Free
Suitable for Vegetarians
Gluten Free
Dairy Free
With no artificial colourings
Without GMOs
Suitable for Vegans
Nut Free
Lactose Free
Soy Free
Minimum purchase of units!
Add to cart
Notice of Availability
Notify me when the product SOD (superoxide dismutase) (TetraSOD®) 25mg is available
Notify me when the product is available
Warning about our product information
GUIDELINE DOCUMENT FOR COMPETENT AUTHORITIES IN THE FIELD OF COMPLIANCE CONTROL WITH EU LEGISLATION
Warning about our product information
Servings: 60
Serving size: 1 veg caps
Recommended daily intake: 1 veg caps
| Amount of nutrients | Per serving | Per daily intake | NRV* | NRV* |
|---|---|---|---|---|
Superoxide dismutase (SOD) from lyophilised microalgae Tetraselmis chuii (TetraSOD®) | 750U / 25 mg | 750U / 25 mg | ++ | ++ |
Vitamin C (as ascorbic acid) | 80 mg | 80 mg | 100% | 100% |
Vitamin E | 3.6 mg | 3.6 mg | 30% | 30% |
of D-alpha-tocopheryl acid succinate | 4.4 mg | 4.4 mg | ++ | ++ |
NRVs (Nutrient Reference Values) established in Regulation (EU) 1169/2011 of 25 October 2011. †† NRVs are not established on this occasion.
Ingredients
Rice flour, ascorbic acid (vitamin C), vegetable capsule [glazing agent (hydroxypropyl methylcellulose)], freeze-dried microalgae Tetraselmis chuii (SOD 30000 IU/g), anti-caking agent (L-leucine), anti-caking agent (tricalcium phosphate), D-alpha-tocopheryl acid succinate (natural vitamin E).
Warnings
Store in a cool (below 25°C), dry and dark place. Do not exceed the stated recommended daily dose. Keep out of reach of the smallest children. Nutritional supplements should not be used to replace a balanced diet. Not to be used in persons predisposed to or suffering from kidney stones.
SOD (Superoxide Dismutase) (TetraSOD®️) 25mg by EssentialSeries is a food supplement made from the enzyme Superoxide Dismutase, better known as SOD, originating from natural sources, unlike most SODs on the market that are developed from synthesis or genetically modified organisms; a practice that we at HSN reject.
TetraSOD®️, developed by the company Fitoplancton Marino SL, is the result of several decades of research, development, and innovation to obtain the best ultra-purified Superoxide Dismutase enzyme from natural plankton grown in sealed environments for maximum potency, without genetic alteration of the plankton to artificially alter the power of SOD.
Of national origin, TetraSOD®️ is developed from the Plankton species discovered in the heart of the Doñana Natural Park, located in the province of Huelva, close to Cadiz and Seville.
SOD is an enzyme in the human body, but it is not just limited to us:
Due to the biological activity that the antioxidant enzyme possesses, catalysing the conversion of the superoxide anion into H2O2 for its subsequent splitting into water and oxygen, all living organisms have it... Yes, yes, you read that right, from simple prokaryotic cells to the human being, which is the pinnacle of evolutionary development, they all have Superoxide Dismutase acting within them.
Superoxide Dismutase is a metalloenzyme, so it is always found in combination with a 'metalloid' element such as Iron, Nickel, Zinc, etc. No one expression is superior to the other, but the combination of different versions of this metalloenzyme is a superior option to any one of them.
The phytoplankton species used for the development of TetraSOD®️ is the best possible for obtaining pure Superoxide Dismutase of the highest quality, since in the microalgae Tetraselmis chuii 3 different genes have been identified that encode the expression of 3 SOD isoforms, these being: Mn, Cu-Zn, and Ni.
HSN brings you the most powerful sod thanks to the combined expression of 3 isoforms of this indispensable enzyme!
At HSN, we never stop innovating, and part of this innovation is the relentless search for important and interesting new compounds to complement the nutritional needs of our customers.
We had been investigating the SOD for years, but... We were not convinced... We found a lot of synthetic SOD that did not fit what we were looking for, and the natural SOD did not meet our purity and activity criteria, not to mention that most of the natural SOD sold on the market come from species with Genetically Modified Organisms... In short, a project that we were on the verge of shutting down.
But we found Marine Phytoplankton! A national company known for its high-quality standards, they have the best SOD raw material you can get, and this is TetraSOD®️.
After our tests, product analysis, and documentary analysis, we validated the raw material as what we had been searching for years and we have crowned this process with the development of the product you are now in.
You can be sure that you are dealing with the ultimate SOD product: the best raw material, an effective dose, and a complementary formulation thanks to the action of the added vitamins that make there is nothing better on the market.
SOD is, as indicated above, an enzyme present in all existing life forms, even the simplest, but not all of them are equally effective in obtaining an ultra-pure presentation of the compound.
Phytoplankton microalgae are the perfect source for extracting this enzyme.
The phytoplankton is developed under controlled culture conditions that allow the raw material to be properly treated to obtain the pure enzyme in various isoforms, of maximum purity so that its efficacy is guaranteed to be the highest available on the market.
TetraSOD®️ is Superoxide Dismutase extracted solely and exclusively from natural phytoplankton.
The microalgae used to prepare TetraSOD®️ are not just any plankton, as only certain species are optimal for the extraction of high-purity SOD; among all of them, one stands out above the rest by far: Tetraselmis chuii.
This particular species has been obtained for the first time from the extraction of the lakes of the Veta La Palma estate, an authentic natural paradise and maximum expression of biodiversity where under its waters is found the greatest environmental treasure: Tetraselmis chuii as part of the marine phytoplankton species.
From the collection of this species and its validation as the most suitable source for the highest potency SOD, a unique proprietary cultivation system has been developed and protected under TetraSOD's patent rights, ensuring that there is no other SOD like it on the market.
Phytoplankton is not collected from free environments but is collected from internal culture, controlled under specific conditions of environmental exposure to factors such as Co2, sunlight, and nutrients in the culture medium.
A key patented technology for microalgae with a high level of SOD, the result of research and development by Fitoplancton Marino S.L., unique in the world, is applied to these conditions to obtain the highest purity SOD possible.
Harvesting and subsequent centrifugation + freeze-drying results in TetraSOD®️, a raw material that is unique in the world.
The antioxidant potency of a compound can be measured, most commonly by applying a system known as 'ORAC measurement' (Oxygen Radical Absorbance Capacity) which is used as an international reference value and measure to establish how antioxidant a product is.
Just for reference, the antioxidant power of TetraSOD®️ is 30000 U per gram of dry weight, while that of other microalgae is around 1000 U, i.e., it accumulates up to 30 times more SOD activity than any other marine phytoplankton strain on the market. Incredible, isn't it?
The ORAC value of TetraSOD is almost 10 times higher than that of Goji berries, almost 15 times higher than grapes, and more than 25 times higher than antioxidant-rich citrus fruits such as lemons or kiwi fruit.
Values from scientific studies carried out with TetraSOD show:
| Parameter | Value |
| SOD activity | ≥30000 UI |
| AAC (Antioxidant Capacity in Live Cells) | 38,94 µmole QE |
| ORAC (Oxygen Radical Absorption Capacity) | 38,94 µmole TE/100g |
Unbeatable values!
At HSN we were not going to limit ourselves to making our product exclusively with TetraSOD®️, even if SOD is the star compound of the product, we had to improve it!
And we have achieved this by adding the 2 vitamins with the highest antioxidant capacity: Vitamin C and vitamin E.
Both vitamins contribute to the protection of cells against oxidative damage.
At HSN we have used the best presentations of these vitamins so that their absorption is maximum, and the body can take full advantage of them:
Both vitamins are present in significant quantities, in fact, the product provides 100% of the minimum daily requirement of vitamin C and almost one-third of vitamin E.
The minimum dose of TetraSOD®️, according to the company's internal research, is as little as 4.67mg. At this dose, you get enough for a basic antioxidant effect, but the properties of TetraSOD®️ do not stop there.
Research carried out with athletes shows that the most effective amount of TetraSOD®️ to take advantage of the full spectrum of the product's properties is 25mg.
At HSN we have reviewed the methodology of the internal studies of Marine Phytoplankton and have validated the 25mg dose as the most appropriate amount for the development of our supplement, as its effectiveness is maximum at this amount, and its safety is total.
Trust only hsn which guarantees you the best concentration of its products.
There are many antioxidants on the food supplement market, and in the following section, we are going to recommend other options that you should consider for your daily combo.
The differences between them all lie in concentration, purity, and personal preference based on experience.
SOD (Superoxide Dismutase) (TetraSOD®️) 25mg is ideal for people:
Our experts recommend combining TetraSOD®️ with other antioxidants only if you need an extra-potent load of antioxidants, as this product itself is highly potent.
The most suitable combinations are:
Bibliographical References
Ask a question
The questions are asked by users and the answers are prepared by the HSN team for informational purposes. The information provided does not replace the advice or care of a healthcare professional. References to food supplements have not been evaluated by the EFSA (European Food Safety Authority) and are not intended to diagnose, treat, cure, or prevent any disease. HSN reserves the right to review or update the answers when necessary.
No questions available


Do you have questions about the product?
The team of experts is here to help you.
We will try to resolve your query as soon as possible.
Login and ask usWhat our customers say about the product
A satisfied customer says:
SOD 25 mg
Montse | 02/08/2026
I want to try this SOD in this format, TetraSod; I understand it's one of the best and its origin is phytoplankton.
A critical customer says:
Mediocre
Pat | 11/09/2023
Difficult evaluation soon but one thing is for sure l taste is horrible even in the capsule the stomach does not digest it...not recommended
Score of 4.75 / 5.00 of 22 real reviews
The product reviews and opinions published reflect only the customers’ views and experiences. HSN does not verify or endorse such comments or claims, and is not responsible for the content provided in the reviews. Statements regarding food supplements have not been evaluated by the EFSA (European Food Safety Authority) and are not intended to diagnose, treat, cure, or prevent any disease or medical condition.
Montse |
Verified purchase
SOD (superoxide dismutase) (TetraSOD®) 25mg
SOD 25 mg
I want to try this SOD in this format, TetraSod; I understand it's one of the best and its origin is phytoplankton.
Gloria |
Verified purchase
SOD (superoxide dismutase) (TetraSOD®) 25mg
The best of antioxidants
The best of antioxidants, unbeatable quality and price, no taste or odor, very convenient size to swallow.
Fran |
Verified purchase
SOD (superoxide dismutase) (TetraSOD®) 25mg
Antioxidant
This superoxide dismutase is a great antioxidant protecting against oxidative stress and inflammation. Enriched with vitamin E. Unbeatable price.
Marisa |
Verified purchase
SOD (superoxide dismutase) (TetraSOD®) 25mg
Antiox
I am buying different antioxidants from HSN but this one comes from cultivated algae and is very rich in vitamin C and that's all said and done. I believe in the quality of HSN and it will do me a lot of good.
Modlamin |
Verified purchase
SOD (superoxide dismutase) (TetraSOD®) 25mg
For value for money I recommend it
The quality is high and worth investing in, the taste of the product is like green tea but the smell comes to me more seaweed, it is effective and I am happy for the result I recommend it 100%100.
Own manufacturing
We produce our products and sell them directly to you.
Guaranteed quality
Complete control over our processes earns us the highest certifications.
Right price
Our philosophy ensures we offer the best possible price to our customers.
Sustainable and social
We strive to contribute to a better society.
Free shipping
Spend just €85, and we’ll ship your entire order for free.
Super-fast delivery
Once you place your order, it’ll arrive within 3-5 business days.
Daily promotions
We run daily offers so you can make the most of our deals.
Payment options
You can choose from a variety of payment methods.
Attention
Info
The crossed-out price or the one indicated as “RRP” (Recommended Retail Price) is the official list price recommended by the manufacturer or by our product development team in the case of our own brands.
HSN displays the “RRP” (Recommended Retail Price) as a reference price for comparison purposes.
Add to cart