Independent · Curator-led · Since 2007
The unhurried, honest guide to the world’s most studied microalga.
19 years of moderating the largest organic spirulina community on the web — distilled into a calm, ad-light, brand-neutral guide. What it is, how to use it, who should avoid it, and which brands deserve your trust.
14,000+ members in Spirulina Love · Moderated since 2007
Where to begin
Six honest, evidence-graded answers to the questions every newcomer asks.
What spirulina actually is
A microalga, not a plant — and why that distinction matters when you read labels.
ReadBenefits, evidence-graded
What the research actually says, separated from the marketing.
ReadHow to use it
Dosage, timing, and the forms that suit different goals.
ReadWho should avoid it
Pregnancy, autoimmune conditions, PKU, medications — and why.
ReadQuality & purity
Heavy metals, microcystins, phycocyanin — what to check before you spend.
ReadMyths debunked
“Detox”, “cure”, “superfood” — what holds up and what doesn’t.
ReadBeyond the basics
A small library of recipes you’ll actually use, calculators that turn vague questions into 30-second answers, an evolving brand directory, and a slow editorial blog.
Recipes
37 kitchen-tested ways to eat it
Smoothies, savouries, raw bites, drinks. Calibrated to mask the taste and preserve the bioactivity.
OpenTools
Personal protocol + three calculators
Five questions → your complete spirulina plan. Plus individual tools for dose, iron, and safety.
OpenBrands
A growing producer directory
What we look for in a spirulina brand, organised by region. No paid placements.
OpenGrowers
8 farm profiles, long-form
In-depth records of spirulina cultivators — from Hawaii to Tamil Nadu. The human side of the supply chain.
OpenBlog
Long reads, slowly written
Editorial pieces and buyers' guides from the curator and the wider community.
OpenLatest from the blog
All articles →Science · 10 min
Spirulina and Muscle Contraction: Thin Filament Regulation, Calcium-Troponin Coupling, and Fatigue Biology
The molecular mechanics of sarcomere cross-bridge cycling, troponin-calcium coupling, and fatigue at the level of Pi accumulation and ROS-oxidised TnC — and how spirulina's nutrients support muscle function and recovery.
Science · 10 min
Spirulina and MHC Class II Antigen Presentation: Dendritic Cell Maturation, Invariant Chain, and Adaptive Immunity Priming
From invariant chain chaperoning to HLA-DM-catalysed peptide exchange, MHC-II antigen presentation shapes adaptive immunity. How spirulina modulates DC maturation and Th1/Treg balance via TLR engagement.
Science · 10 min
Spirulina and Glucokinase: The Hepatic Glucose Sensor, GKRP Nuclear Trafficking, and Beta-Cell Coupling
Glucokinase's high Km, sigmoidal kinetics, and GKRP nuclear shuttling make it the body's glucose thermostat. How spirulina's AMPK activation and post-prandial glycaemia effects relate to hepatic GCK biology.
Growers Series
The people who grow it.
Long-form profiles of spirulina cultivators — from industrial raceway ponds on the Kona coast to artisanal covered operations in the Pyrenees.
India · Tamil Nadu
Parry Nutraceuticals — Coromandel Coast
One of India's oldest and most export-focused spirulina operations, located on the Bay of Bengal coast near Chennai. Parry has grown spirulina at industrial scale for 35 years and supplies both a consumer brand and bulk ingredients to international markets.
Read profile
France · Hautes-Pyrénées
Spiruline du Pic
A small family operation at the foot of the Pyrenees, growing spirulina in covered greenhouse raceways using spring water from the mountains. One of the cleanest water sources for spirulina cultivation in Europe.
Read profile
Italy · Po Valley, Emilia-Romagna
MyAlgae
Italy's most technically advanced spirulina producer, using closed tubular photobioreactors in the Po Valley. A benchmark for contamination-controlled cultivation in Europe.
Read profile
Built on top of a 14,000+ member community.
Spirulina Guru is the editorial home of Spirulina Love, a community I’ve been moderating since 2007. The site distills what we’ve learned together over 19 years — without ads, without affiliate pressure, and without picking favourites.
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