What is in Reta3
Reta3 is a once-a-day capsule sold direct. Six listed ingredients, a 60-day money-back guarantee, and free delivery from two packs. Here is what every pack costs at checkout today.
Ingredients
What is in Reta3
Six ingredients are listed on the Reta3 checkout: spirulina, matcha, L-carnitine, L-arginine, apple cider vinegar extract and zinc. Those six are what this page names, because those six are what is listed.
Between them they are an algae, a powdered tea leaf, two amino acids, a dried vinegar and an essential mineral. None of them is exotic and none of them is new to a supplement shelf, and each one is set out below on its own terms — what it is, where it comes from and how it ends up inside a capsule.
No amount is published for any of them, so no amount is printed here. Reta3 is a food supplement, not a medicine and not a prescription treatment.
One by one
The six, and what each one is
Six names, in the order the checkout lists them.
Spirulina
Spirulina is a blue-green algae. It is grown in water, harvested, dried and milled to a deep green powder, and it has been eaten as a food in its own right in several parts of the world for a very long time. In a capsule it is simply that powder, without the taste that puts people off it in a glass.
Matcha
Matcha is green tea in powdered form. Instead of steeping leaves and throwing them away, the whole leaf is ground fine, so what goes into the capsule is the leaf itself rather than an infusion of it. It is the same matcha you would meet in a tea bowl, measured into a capsule instead of whisked into hot water.
L-carnitine
L-carnitine is an amino acid. The body makes its own, and it turns up in everyday food as well — red meat and dairy carry the most of it. It is one of the longest-standing names on the supplement shelf, which is why it tends to read as familiar even to people who have never bought it on its own.
L-arginine
L-arginine is the second of the two amino acids. It occurs naturally in protein foods such as nuts, seeds, fish and poultry, and, like L-carnitine, it was sold as a single-ingredient supplement for years before it started appearing inside blends like this one.
Apple cider vinegar extract
Apple cider vinegar is pressed apple juice fermented twice — first to cider, then to vinegar — with a traditional-use history in kitchens and pantries that runs back centuries. The extract is that vinegar in dried form, which is how it fits into a capsule you swallow rather than a spoonful you taste.
Zinc
Zinc is an essential mineral: the body cannot make it, so it has to come in from food or from a supplement. It is also the only one of the six with authorised EU health claims behind it, and those are set out in full in the next section.
Zinc
The authorised claim
Zinc contributes to normal macronutrient metabolism, to normal cognitive function and to the normal function of the immune system. Those are the authorised wordings, and they are the ones a food supplement is permitted to use.
Read them literally. They describe normal body function, and not one of them is a claim about weight. Reta3 is a food supplement, not a medicine and not a prescription treatment, and it is sold under the rules that apply to food rather than to medicines.
For the other five there is no authorised claim, and none is made for them.
Amounts
Why no quantities are printed
No quantity is published for any of the six, in milligrams or in any other unit. What is published is the list of names, and the list is what this page carries.
That answers the question most people ask next. There is no supplement-facts table on the label to reproduce, so the six names stand on their own.
Full label information sits with the product itself at the checkout, alongside each pack. It is worth two minutes before you order if the detail matters to you.
The format
One capsule, thirty to a carton
All six sit inside a single swallowable capsule. There is nothing to weigh, nothing to mix and no second product to take alongside it, which is the practical reason a once-a-day capsule survives a busy week when a plan with steps in it does not.
A carton holds 30 capsules — one month at the stated intake of one a day. That is why the packs on this page are described in months rather than by capsule count: one carton is 30 days, two are 60 and three are 90.
Taking it
One capsule a day
One capsule with two large glasses of water, 15 to 30 minutes before or with lunch or dinner. If capsules are difficult, it can be opened and the contents stirred into water.
Do not exceed one capsule a day. A food supplement is meant to sit alongside a varied and balanced diet rather than stand in for one, and the intake does not change over time — the same single capsule on the ninetieth day as on the first.
Good to know
Who it is not for
Reta3 is not recommended for under-18s, or while you are pregnant or breastfeeding. One side effect is listed: dry mouth, described as rare and affecting up to 1 in 1,000 users.
If you take prescription medication or have a medical condition, speak to your doctor or pharmacist before you start and show them the six ingredients listed above. That is the part they will want to see, and it is a two-minute conversation.
Packs
What a pack costs
A pack is a 30-day supply at £59.95. Two packs are £82.95. Three packs are £109.95 — 90 days at £36.65 a pack, the lowest price per pack here.
Delivery is free on the two- and three-pack; the single pack has a delivery charge, shown on its card. Every order carries the 60-day money-back guarantee stated at checkout, so read its terms there when you order.
Packages & prices
Choose your pack
UK prices, read on the date stamped below. Delivery is free on the two- and three-pack. The three-pack is the lowest price per pack.
Prices checked 13 September 2026 at checkout3 packs
90-day supply — lowest price per pack
3 × £59.95 bought separately = £179.85
£36.65 per pack
Checkout at the shop
2 packs
60-day supply — delivered free
2 × £59.95 bought separately = £119.90
Checkout at the shop
You order at checkout, where the 60-day money-back guarantee is stated. We do not take payments and never see your details.
Reviews
Rated 4.8 out of 5

Thanks to Reta3, I lost 5 kg in just one month. I feel energised and confident!

After 3 months I reached my target weight! The natural ingredients have really given my metabolism a boost.

Finally a product that actually works! Lost 12 kg in 2 months and my energy levels are higher than ever.

I was sceptical at first, but Reta3 really surprised me. After just a few weeks I'd already lost 4 kg and I feel so much lighter and more active in everyday life.

Since taking Reta3, I feel so much more comfortable in my own skin. The first 5 kg are gone and I've got the motivation to look after my health again.

I've tried lots of products before, but Reta3 has actually worked for me. My stomach is noticeably flatter and I've lost 4.5 kg so far.

60 days to decide
Order it, take it, and the money-back guarantee runs for 60 days.
Free delivery from 2 packs
Delivery is included on the two- and three-pack.
Sold direct
You buy direct, not from a reseller.
Secure checkout
Payment is handled by the shop, with PayPal and Klarna.
Questions
Asked and answered
What is in Reta3?
The label names six ingredients: spirulina, matcha, L-carnitine, L-arginine, apple cider vinegar extract and zinc.
How much of each ingredient is in it?
The label publishes no amounts for its ingredients, so we print none.
Does zinc have an approved health claim?
Yes. Zinc contributes to normal macronutrient metabolism, normal cognitive function and the normal function of the immune system.
Last step
Don't stop this close to the end.
Everything you've just read points to one place: the official Reta3 store.
- One capsule a day
- Spirulina, matcha and zinc
- 60-day money-back guarantee
Clicking commits you to nothing.
This message closes on its own in
Press Escape to close this message.