Verified
“Certified organic spirulina.”
USDA Organic seal on the panel, certified by QAI (US-ORG-050).
NOW Certified Organic Spirulina 1,000 mg Double Strength Tablets Review
SAC StudioBest Organic TabletBUY
8.4/10SAC Product Score™
How the score breaks downHide breakdown
SAC Product Score™ — how it breaks down
- Dose vs Clinical Range25%8.0
- Purity & Contaminant Control25%8.8
- Label Transparency20%8.0
- Certifications & Sourcing15%9.0
- Value15%8.6
Buy it for organic certification and a clean tablet at a low price
✓ Buy if…
- You want USDA Organic and a tablet, not a powder
- You want zero excipients
✗ Skip if…
- You want the full trial dose in a single printed serving
- You want iron or phycocyanin numbers on the panel
Read the full analysis
✓ Also buy if…
- You value a manufacturer with in-house labs and GMP
✗ Also skip if…
- You want to know which farm the algae came from
NOW's double-strength spirulina is a single-ingredient tablet: 1,000 mg certified-organic spirulina, 'Other ingredients: None', 120 tablets. The organic certification is by QAI, the Non-GMO Project seal is on the panel and NOW manufactures under GMP with its own analytical labs. The only thing to know is the serving: the label says one tablet, so reaching the 3 g used in trials means three.
How we built the SAC Product Score™ — 8.4/10
Dose vs Clinical Range25%8/10
One 1,000 mg tablet is the printed serving; three tablets reach the 3 g the trials used.
Purity & Contaminant Control25%8.8/10
GMP Quality Assured seal and NOW's own analytical laboratories; organic certification limits pesticide exposure, though the growing site is not named on the pack.
Label Transparency20%8/10
The panel declares 1,000 mg organic spirulina and under 1 g protein, with 'Other ingredients: None'; no iron or phycocyanin figures.
Certifications & Sourcing15%9/10
USDA Organic (QAI), Non-GMO Project Verified and GMP Quality Assured seals all on the panel.
Value15%8.6/10
About $0.11 per 1,000 mg tablet, roughly $0.34 for three; one of the cheapest organic routes to a full dose.
The product at a glance
- Form
- Tablet, 1,000 mg each
- Serving
- 1 tablet (1,000 mg)
- Count
- 120 tablets (120 servings)
- Disclosed per serving
- 1 g organic spirulina, protein under 1 g
- Other ingredients
- None
- Seals
- USDA Organic (QAI), Non-GMO Project Verified, GMP Quality Assured
- Cost per dose
- ~$0.11 per tablet
Marketing claims vs. reality
Verified
“Double strength.”
1,000 mg per tablet is double the 500 mg tablets that dominate the category; the claim is about tablet size, not about potency per gram.
Verified
“No other ingredients.”
The panel reads 'Other ingredients: None', which none of the excipient-bound tablets can match.
What our test actually found
01The cleanest tablet in the group
Nutrex and Earthrise need silica and stearates to bind their tablets. NOW's 1,000 mg tablet lists no other ingredients at all, and it is certified organic. For purists that combination is hard to beat.
02One tablet is not a trial dose
The printed serving is one tablet, or 1,000 mg. The human trials that showed symptom and lipid changes used 2-3 g a day and more, so the practical serving is three tablets, and the 120-count bottle then lasts forty days.
Pros & cons, no sugar-coating
Pros
- USDA Organic via QAI, Non-GMO Project verified
- No excipients at all
- GMP manufacturing with in-house labs
- Cheap: about $0.11 per 1,000 mg tablet
Cons
- Printed serving is one tablet, a third of the studied dose
- No iron or phycocyanin disclosure
- Growing region not named on the pack
The organic tablet that earns its spot on cleanliness and price
If you want organic certification in a tablet, NOW is the pick: no binders, real seals, a testing-lab manufacturer and a low price. Take three to match the trials and it still costs about a third of a dollar a day.
Affiliate link — Super Achiever Club earns a small commission at no extra cost to you.
If this doesn’t fit — try these
Nutrex Hawaii Pure Hawaiian Spirulina
8.8/10Hawaiian-pond spirulina that hits the full 3 g trial dose in one six-tablet serving, declares its iron and protein, and carries the longest seal list on the list.
See it on the list →Earthrise California Spirulina
8.6/10The only product here that prints its c-phycocyanin content, 165 mg per 3 g serving, from a single California farm; you pay for that transparency with the highest cost per dose on the list.
See it on the list →Anthony's California Spirulina Powder
8.5/10A California-grown powder with a full food-style Nutrition Facts panel, 3 g per teaspoon, batch-tested gluten-free, at about a quarter per dose.
See it on the list →Sources & further reading
- Huang H, Liao D, Pu R, Cui Y. Diabetes Metab Syndr Obes. 2018;11:729-742.Huang H, Liao D, Pu R, Cui Y · 2018 · Diabetes, Metabolic Syndrome and Obesity · PMID 30532573
Quantifying the effects of spirulina supplementation on plasma lipid and glucose concentrations, body weight, and blood pressure
A meta-analysis of randomized trials found spirulina reduced total cholesterol, LDL, triglycerides, fasting glucose and diastolic blood pressure, with the largest lipid effects at higher doses and longer durations.
- Cingi C, et al. Eur Arch Otorhinolaryngol. 2008;265(10):1219-23.Cingi C, Conk-Dalay M, Cakli H, Bal C · 2008 · European Archives of Oto-Rhino-Laryngology · PMID 18343939
The effects of spirulina on allergic rhinitis
In a six-month double-blind, placebo-controlled trial, 2 g of spirulina a day significantly reduced allergic-rhinitis symptoms including nasal discharge, sneezing, congestion and itching versus placebo.