• thecary Spirulina 500mg 60 vegan tablets, front of bottle, pure blue-green algae UK
  • thecary Spirulina 500mg 60 vegan tablets, side of bottle showing supplement facts
  • thecary Spirulina 500mg 60 vegan tablets, back of bottle with directions
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thecary

Spirulina 500mg — 60 Vegan Tablets

Spirulina 500mg — 60 Vegan Tablets

£18.99 GBP
£18.99 GBP
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Ingredients

Organic Spirulina. Contains naturally occurring Sulphites.

Delivery & Returns

Delivery & Returns

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Spirulina

Category

Botanical

Spirulina

A complete plant protein, rich in B vitamins, iron, and the antioxidant pigment phycocyanin.

Key Function

Nutrient-dense superfood, antioxidant, anti-inflammatory.

What it's used for

General nutrition, immune support, everyday vitality.

Key Benefits

A complete plant protein, rich in B vitamins, iron, and the antioxidant pigment phycocyanin.

Science Behind It

Spirulina is a blue-green algae known for its exceptional nutrient density. It is a complete protein source, contains a wide array of vitamins (especially B vitamins) and minerals (iron, magnesium), and is rich in antioxidants like phycocyanin, which gives it its blue-green colour. It is widely used as a nutrient-dense everyday superfood.

Spirulina is a blue-green algae, among the oldest life forms on earth, grown in fresh water and dried into a deep green powder or pressed into tablets. It is often described as one of the more nutrient-dense foods by weight. thecary's Spirulina is 500mg per tablet.

What spirulina is
Spirulina (Arthrospira platensis) is a microalgae cultivated in fresh water, then harvested, dried and pressed into tablets. It is naturally deep green from its chlorophyll content, with a distinctive earthy, oceanic flavour, and has been eaten as a food for centuries in parts of the world.

A note on B12
Spirulina is often described as a source of vitamin B12, but the B12 in spirulina is mostly 'pseudo-B12', a form the body cannot reliably use. If you follow a plant-based diet and need B12, a dedicated B12 or B-complex supplement — such as ours — is the dependable choice.

How to take it
Take up to four tablets daily with water, ideally with food. Spirulina has a strong taste, so tablets are often preferred to powder. Introduce it gradually if you are new to it.

Vegan, GMO-free, and made in the UK to FSSC 22000 standard. Not suitable for those with phenylketonuria (PKU), and best avoided if you have an autoimmune condition without medical advice. Food supplements are not a substitute for a varied, balanced diet and a healthy lifestyle. Do not exceed the recommended dose. If you are pregnant, breastfeeding, taking medication or under medical supervision, consult your doctor before use.

  • Made In UK

  • FSSC 22000

  • Vegan

  • GMO Free

  • Science Backed

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FAQ

thecary icon on a background of green leaves with water droplets

What is spirulina and what does it do?

Spirulina is a blue-green microalgae grown in fresh water and dried into tablets or powder. It is naturally nutrient-dense, with an earthy, oceanic flavour.

How much spirulina should I take?

Up to four 500mg tablets daily, with water and ideally food. If you are new to spirulina, start with fewer and build up.

When is the best time to take spirulina?

Any time of day, with food. There is no strict rule — consistency matters more than timing. Some people prefer it earlier in the day.

Is spirulina the same as chlorella?

No, though they are often mentioned together. Both are green algae, but spirulina is a blue-green microalgae and chlorella is a green single-celled algae with a hard cell wall. They differ in nutrient profile and processing. Ours is spirulina.

Does spirulina contain B12?

The B12 in spirulina is mostly 'pseudo-B12', a form the body cannot reliably use as vitamin B12. If you need B12 — as many on plant-based diets do — a dedicated B12 or B-complex supplement is the dependable choice.

Can spirulina detox the body?

Detox is not something we claim for spirulina — the body's own liver and kidneys do that work. Spirulina is simply a nutrient-dense food.

Is spirulina safe?

For most people, yes, taken as directed. It is not suitable for anyone with phenylketonuria (PKU), as it contains phenylalanine, and those with autoimmune conditions should check with a doctor first. Quality matters — poorly sourced algae can be contaminated, which is why testing is important.

Why does spirulina sometimes cause stomach upset?

Introducing spirulina too quickly can cause mild digestive upset for some people. Starting with a lower amount and building up, and taking it with food, usually helps. If discomfort continues, reduce the dose.

Is spirulina good for athletes?

Spirulina is popular among some athletes as a nutrient-dense food to add to a varied diet. It contains a small amount of caffeine only if combined with other ingredients; on its own it has none.

Is thecary's spirulina vegan?

Yes. Spirulina is an algae, not an animal product, and ours is vegan and free from GMO, made in the UK to FSSC 22000 standard.

Can I take spirulina with other supplements?

Yes. It sits alongside most of our range as a nutrient-dense food. If you take prescription medication or have an autoimmune condition, check with your doctor or pharmacist first.

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