Spirulin Plus

What it is

Spirulina is a blue-green algae that has been harvested as a food source for centuries, from the Aztec use of Lake Texcoco spirulina to the Kanembu people's traditional harvesting of it from Lake Chad. It's one of the more nutrient-dense single ingredients in the plant world: gram for gram, spirulina is unusually high in protein, and it carries a meaningful spread of B-vitamins, iron, and phycocyanin — the blue-green pigment that gives the algae its color and that researchers have studied for its antioxidant properties.

Spirulin Plus is a daily spirulina supplement built around that same whole-food profile — the kind of dense, simple nutrition that shows up again and again when you look at what traditional diets leaned on.

Why we selected it

We look at a lot of spirulina products before we're willing to put one on this page. What we wanted here was something straightforward: a real spirulina supplement, without a long list of proprietary blends or fillers standing between you and the ingredient itself. Spirulin Plus is what we landed on, and it's also a product we use in our own routine.

An honest read on what spirulina does

We want to be direct about where the evidence actually sits. Spirulina is a nutrient-dense whole food, and studies have examined its nutritional contribution — protein content, B-vitamin and iron levels, and the antioxidant behavior of phycocyanin in laboratory and early clinical research. That is a meaningfully different claim than saying it treats or prevents any condition, and we're not going to blur that line for you. Nothing here is intended to diagnose, treat, cure, or prevent disease, and spirulina is not a substitute for a varied diet or for your doctor's guidance. If you take it, think of it as filling a nutritional gap — not as medicine.

How to use it

Spirulina supplements are typically taken daily, mixed into water or a smoothie or taken as capsules or tablets, following the serving size on the label. Because it's a concentrated whole food, it's worth starting with a single serving to see how it sits with you before increasing, and worth mentioning to your doctor if you're on any medication, pregnant, or nursing.

What to look for in any spirulina product

Whether you buy this one or something else, a few things are worth checking on the label: the species used (Arthrospira platensis or Arthrospira maxima, the two studied forms of spirulina), a clear statement of how much spirulina is actually in each serving, and some indication of third-party testing for contaminants — algae grown in uncontrolled water can concentrate heavy metals, so sourcing matters more here than with most supplements.

Check current pricing and availability for Spirulin Plus →
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