Compare every Spirulina product across UK retailers on Suppio, ranked by true value - price per active dose, not pack size. Prices refreshed daily.
Blue-green algae rich in protein, B vitamins, and antioxidants
We rank Spirulina by price per gram of active ingredient - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
Spirulina is a type of blue-green algae, which is a simple organism that lives in water. It is highly concentrated in protein (the building blocks of the body), B vitamins (nutrients that help the body get energy from food), and antioxidants (substances that protect cells from damage).
It is primarily used as a nutrient-dense supplement to increase the intake of vitamins and minerals. People use it to support overall health due to its high protein and antioxidant content.
The algae is grown in large, shallow ponds or tanks of water. Once it has grown sufficiently, it is harvested and filtered out of the water. The remaining algae is then dried, usually through a spray-drying process that turns it into a fine powder, which can be sold as is or put into capsules.
This ingredient is generally mid-range in price. This is because the algae requires specific water conditions and controlled environments to grow and harvest safely, making it more expensive to produce than basic minerals but cheaper than rare botanical extracts.
| Purpose | Typical studied dose | Evidence |
|---|---|---|
| obesity and weight reduction | 2 grams per day | established |
| hypertension | 2 grams per day | established |
| hyperglycemia | 2 grams per day | established |
| hyperlipidemia | 4.2 grams per day | emerging |
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
Prices across our retailer network are refreshed at least daily.
Blue-green algae rich in protein, B vitamins, and antioxidants
We rank Spirulina by price per gram of active ingredient - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
Prices across our retailer network are refreshed at least daily.