Spirulina Natural Tablets

Spirulina Natural Tablets

Earthrise4.8 (1,547 ratings)
Format:Tablet Quantity: 180 Tablet(s) · 60 servings
Goals
$14.30 $0.23 per serving

Product analysis

38 out of 100

Spirulina Natural Tablets offers spirulina in tablet form, but missing nutrient amounts and source details make its nutritional contribution harder to judge.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality20

Most nutrient forms are unspecified, leaving their quality and absorption uncertain. Naming beta-carotene alone does not resolve the uncertainty around the other components.

Ingredient Transparency45

Most amounts are disclosed, but some quantities and nearly all forms are missing. The incomplete mixture details also limit a full comparison of the contents.

Value For Money29

The chlorophyll and gamma-linolenic acid contributions are costly relative to the amounts provided. Value for the remaining components is uncertain, so the broader nutrient list does not establish good value.

Customer Satisfaction85

Customer feedback is very favorable across a substantial number of ratings. That provides a broad picture of satisfaction without establishing the tablets’ health effects.

Product Focus25

The range of components is broad relative to the two intended health aims. Support for those aims is limited, and the number of components should not be taken as evidence of greater benefit.

Format
Tablet
Container
180 Tablet(s)
Per serving
$0.23
Customer rating
4.8 · 1,547 ratings
Report analysis

Goals

Eye Health
Impact
Lower effect
D Ingredient FitF PathwaysF EvidenceA- Formulation Logic
carotenoids · 11 mgVitamin A · 7000 IU
Study evidence
Vitamin A Supportive 65 studies
Skin Health
Impact
Situational effect
F Ingredient FitF PathwaysF EvidenceB Formulation Logic
Gamma Linolenic Acid · 30 mg
Study evidence
Vitamin A Supportive 106 studies

Ingredients

IngredientAmount per servingScore
Calories
10 {Calories}
Total Fat
0 Gram(s)
Total Carbohydrates
1 Gram(s)
Protein
2 Gram(s)
Vitamin A (Beta-Carotene)
7000 IU 76
Vitamin K
22 mcg
Iron
1.7 mg
Sodium
25 mg
C-Phycocyanin
185 mg
Chlorophyll
30 mg 51
Gamma-Linolenic Acid
30 mg 29
Total Carotenoids
11 mg
Zeaxanthin
2.9 mg
Spirulina
3 Gram(s)
Gluten Free Adults 18–50 Kosher Vegetarian
Report overview
D+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyB+ Value
Each serving lists 7,000 IU of vitamin A, all labeled as beta-carotene. Beta-carotene is a provitamin A source.
How this ingredient is rated

Active Ingredient Quality & Bioavailability50

Beta-carotene is a provitamin A source; the saved facts do not establish whether its origin is natural or synthetic.
Vitamin A Chemical Form & Source
Beta-carotene is a provitamin A source; the saved facts do not establish whether its origin is natural or synthetic.

Dose, Safety & Label Transparency100

Each serving provides 7,000 IU of vitamin A. The label identifies beta-carotene as the entire vitamin A source.
Dosage Efficacy & Safety Thresholds
Each serving provides 7,000 IU of vitamin A.
Label Transparency of Specific Forms
The label identifies beta-carotene as the entire vitamin A source.

Value80

Based on the whole-product price, the equivalent of 5,000 IU costs about $0.34, relatively inexpensive in this comparison.
Price per 5,000 IU Dose
Based on the whole-product price, the equivalent of 5,000 IU costs about $0.34, relatively inexpensive in this comparison.
D Active Ingredient Quality & BioavailabilityB Dose, Safety & Label TransparencyF Value
The serving lists 30 mg of chlorophyll, a moderate amount. The whole-product price works out to about $1.59 per 100 mg of chlorophyll, which is relatively high.
How this ingredient is rated

Active Ingredient Quality & Bioavailability46

Chlorophyll is identified, but its specific chemical form is not established in the saved facts. The saved facts do not identify a botanical source for the chlorophyll.
Chemical Form & Stability
The available facts identify chlorophyll without establishing a more specific chemical form.
Botanical Source Transparency
The saved facts do not identify a botanical source for the chlorophyll.

Dose, Safety & Label Transparency78

The serving lists 30 mg of chlorophyll, a moderate amount.
Chlorophyll Potency per Serving
The serving lists 30 mg of chlorophyll, a moderate amount.
Elemental Mineral Disclosure
No copper chlorophyllin complex is identified in the saved facts, so the complex-specific copper disclosure check does not apply.
Additive Safety & Laxative-Free Guarantee
The saved facts flag no harsh herbal laxatives or the specified artificial colors or sweetener.

Value10

The whole-product price works out to about $1.59 per 100 mg of chlorophyll, which is relatively high.
Price per 100 mg Chlorophyll
Based on the whole-product price, 100 mg of chlorophyll costs about $1.59, which is relatively high.
F Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyF Value
A serving provides 30 mg of gamma-linolenic acid (GLA) from spirulina. At the whole-product serving price, that works out to about $1.59 per 100 mg of GLA.
How this ingredient is rated

Active Ingredient Quality & Bioavailability30

The GLA is associated with spirulina; no qualifying pressing or hexane-free claim is recorded.
Botanical Source & GLA Concentration
The recorded source of GLA is spirulina.
Extraction Method & Oxidative Stability
No qualifying pressing or hexane-free claim is recorded.

Dose, Safety & Label Transparency37

The GLA amount is stated separately as 30 mg per serving.
Active GLA Dosage Potency
The recorded GLA amount is 30 mg per serving.
GLA Yield Disclosure
The GLA amount is explicitly recorded in milligrams.

Value10

At the whole-product serving price, the cost is about $1.59 per 100 mg of GLA.
Price per 100mg Active GLA
The whole-product serving price corresponds to about $1.59 per 100 mg of GLA.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. A randomized trial of vitamin A and vitamin E supplementation for retinitis pigmentosa.
    Berson EL; Rosner B; Sandberg MA; Hayes KC; Nicholson BW; Weigel-DiFranco C; Willett W · Archives of ophthalmology (Chicago, Ill. : 1960) · 1993
    Randomized trial601 participantsEye Health forVitamin A
  2. Efficacy and safety of retinol palmitate ophthalmic solution in the treatment of dry eye: a Japanese Phase II clinical trial.
    Toshida H; Funaki T; Ono K; Tabuchi N; Watanabe S; Seki T; Otake H; Kato T; Ebihara N; Murakami A · Drug design, development and therapy · 2018
    Randomized trial66 participantsEye Health forVitamin A
  3. Vitamin A supplementation for preventing morbidity and mortality in children from six months to five years of age.
    Imdad A; Mayo-Wilson E; Haykal MR; Regan A; Sidhu J; Smith A; Bhutta ZA · The Cochrane database of systematic reviews · 2022
    Meta-analysis1,223,856 participants47 studies pooledEye Health forVitamin A
  4. Vitamin A supplementation improves retinal function in infants at risk of retinopathy of prematurity.
    Mactier H; McCulloch DL; Hamilton R; Galloway P; Bradnam MS; Young D; Lavy T; Farrell L; Weaver LT · The Journal of pediatrics · 2012
    Randomized trial89 participantsEye Health forVitamin A
  5. Effect of short-term, high-dose retinol on dark adaptation in aging and early age-related maculopathy.
    Owsley C; McGwin G; Jackson GR; Heimburger DC; Piyathilake CJ; Klein R; White MF; Kallies K · Investigative ophthalmology & visual science · 2006
    Randomized trial104 participantsEye Health forVitamin A
  6. Photosensitizer Radachlorin®: Skin cancer PDT phase II clinical trials.
    Kochneva EV; Filonenko EV; Vakulovskaya EG; Scherbakova EG; Seliverstov OV; Markichev NA; Reshetnickov AV · Photodiagnosis and photodynamic therapy · 2011
    Randomized trialSkin Health forChlorophyll
  7. Photodynamic therapy using chlorophyll-a in the treatment of acne vulgaris: a randomized, single-blind, split-face study.
    Song BH; Lee DH; Kim BC; Ku SH; Park EJ; Kwon IH; Kim KH; Kim KJ · Journal of the American Academy of Dermatology · 2014
    Randomized trial24 participantsSkin Health forChlorophyll
  8. Effect of Evening Primrose Oil on Korean Patients With Mild Atopic Dermatitis: A Randomized, Double-Blinded, Placebo-Controlled Clinical Study.
    Chung BY; Park SY; Jung MJ; Kim HO; Park CW · Annals of dermatology · 2022
    Randomized trial50 participantsSkin Health forGamma Linolenic Acid
  9. Meta-analysis of placebo-controlled studies of the efficacy of Epogam in the treatment of atopic eczema. Relationship between plasma essential fatty acid changes and clinical response.
    Morse PF; Horrobin DF; Manku MS; Stewart JC; Allen R; Littlewood S; Wright S; Burton J; Gould DJ; Holt PJ · The British journal of dermatology · 1989
    Meta-analysis9 studies pooledSkin Health forGamma Linolenic Acid
  10. Reduced levels of prostaglandin precursors in the blood of atopic patients: defective delta-6-desaturase function as a biochemical basis for atopy.
    Manku MS; Horrobin DF; Morse N; Kyte V; Jenkins K; Wright S; Burton JL · Prostaglandins, leukotrienes, and medicine · 1983
    Non-randomized trial50 participantsSkin Health forGamma Linolenic Acid
  11. Effect of borage oil consumption on fatty acid metabolism, transepidermal water loss and skin parameters in elderly people.
    Brosche T; Platt D · Archives of gerontology and geriatrics · 2005
    Non-randomized trial29 participantsSkin Health forGamma Linolenic Acid
  12. Effects of oral supplementation with evening primrose oil for six weeks on plasma essential fatty acids and uremic skin symptoms in hemodialysis patients.
    Yoshimoto-Furuie K; Yoshimoto K; Tanaka T; Saima S; Kikuchi Y; Shay J; Horrobin DF; Echizen H · Nephron · 1999
    Randomized trial16 participantsSkin Health forGamma Linolenic Acid
  13. Efficacy and Tolerability of Topical 0.1% Stabilized Bioactive Retinol for Photoaging: A Vehicle-Controlled Integrated Analysis.
    Farris P; Berson D; Bhatia N; Goldberg D; Lain E; Mariwalla K; Zeichner J; Miller D; McGuire T; Kizoulis M · Journal of drugs in dermatology : JDD · 2024
    Meta-analysis471 participants6 studies pooledSkin Health forVitamin A
  14. Tensile properties and contours of aging facial skin. A controlled double-blind comparative study of the effects of retinol, melibiose-lactose and their association.
    Piérard-Franchimont C; Castelli D; Cromphaut IV; Bertin C; Ries G; Cauwenbergh G; Piérard GE · Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI) · 2016
    Randomized trial120 participantsSkin Health forVitamin A
  15. Antiaging action of retinol: from molecular to clinical.
    Bellemère G; Stamatas GN; Bruère V; Bertin C; Issachar N; Oddos T · Skin pharmacology and physiology · 2009
    Randomized trial48 participantsSkin Health forVitamin A
  16. An Updated Review of Topical Tretinoin in Dermatology: From Acne and Photoaging to Skin Cancer.
    Balado-Simó P; Morgado-Carrasco D; Gómez-Armayones S; López-Ferrer A; Barco D; Ferrándiz-Pulido C; Podlipnik S · Journal of clinical medicine · 2025
    Narrative reviewSkin Health forVitamin A
  17. Novel Cyclized Hexapeptide-9 Outperforms Retinol Against Skin Aging: A Randomized, Double-Blinded, Active- and Vehicle-Controlled Clinical Trial.
    Chang H; Tao K; Yang Y; Wang Y; Ge M; Wang X; Tang S; Yu H · Journal of cosmetic dermatology · 2025
    Randomized trialSkin Health forVitamin A