Short answer: Spirulina is a blue-green algae and one of the most nutrient-rich foods on earth — around 60% protein, plus iron, B-vitamins and antioxidants. Green spirulina is the whole algae (maximum nutrition); blue spirulina is its isolated blue pigment, phycocyanin, prized as a concentrated antioxidant with almost no taste. Typical dose: 1–3 g of green spirulina per day.
What is spirulina good for?
- Plant protein & iron — a complete protein that's a useful iron source for vegetarians and anyone low on energy.
- Antioxidant support — phycocyanin (the blue pigment) is a powerful antioxidant studied for its role against oxidative stress.
- Everyday energy & immunity — its dense vitamin and mineral profile supports normal energy and immune function.
Green vs blue spirulina — what's the difference?
Green spirulina is the complete dried algae: the most nutrition per gram (protein, iron, chlorophyll, antioxidants), with a distinctive "ocean" taste. Blue spirulina is the extracted phycocyanin — a vivid blue powder that's concentrated in antioxidants and virtually tasteless, which makes it ideal for smoothies, lattes and colouring foods naturally. Choose green for maximum all-round nutrition; choose blue for a clean antioxidant boost without the algae flavour.
How do you take it?
Start with about 1 g per day and work up to 2–3 g. Green spirulina blends best into a strong-flavoured smoothie (banana, cacao, mango) to balance the taste; blue spirulina can go into almost anything. Capsules and tablets are the convenient, no-taste option. Take it with food.
Who should be careful?
Spirulina is safe for most people. Those with autoimmune conditions or the rare condition PKU (phenylketonuria) should avoid it, and anyone on blood-thinners or who is pregnant/breastfeeding should check with their doctor. Quality matters a lot here — see below.
What to look for — and why Nilaya
Because algae absorbs whatever it grows in, purity is everything with spirulina — poor products can carry contaminants. Look for certified-organic algae, tested and properly certified. Nilaya's spirulina is organic and BPOM & Halal certified, and our blue spirulina is genuine concentrated phycocyanin — offered as powder, and as capsules in an eco-friendly glass bottle rather than cheap plastic. Whether you want maximum nutrition (green) or a pure antioxidant extract (blue), there's a clean, certified option.
Shop: Nilaya spirulina & blue spirulina.
Frequently asked questions
Is blue spirulina better than green?
Not "better" — different. Green has more total nutrition; blue is a concentrated, tasteless antioxidant (phycocyanin).
How much spirulina per day?
1–3 g of green spirulina daily; follow the label for blue spirulina, which is more concentrated.
Does spirulina taste bad?
Green has a strong ocean/algae taste; blue spirulina is almost tasteless. Capsules avoid the flavour entirely.
When should I take spirulina?
With food, at any consistent time. Many take it in the morning for energy.