Safety Profile
Known Safety Concerns
- Trace iodine content from seaweed -- relevant for thyroid conditions
- May affect absorption of some minerals and medications
- FDA GRAS -- safe at typical use levels
- Vegan and vegetarian friendly
Contraindications
- Trace iodine content from seaweed -- relevant for thyroid conditions
- May affect absorption of some minerals and medications
Interactions
Information not yet available for this ingredient profile.
Evidence and Scientific Findings
Ingredient Overview
Sodium alginate is a seaweed-derived polysaccharide used for probiotic encapsulation and as a gelling agent. It forms a protective gel around probiotic bacteria, improving viability during GI transit. FDA GRAS. Trace iodine content from seaweed source — relevant for thyroid-sensitive individuals.
Biological and Chemical Classification
- Scientific Name
- Sodium alginate from Laminaria / Macrocystis (brown seaweed)
Mechanism of Action
Information not yet available for this ingredient profile.
Clinical Evidence of Effectiveness
Information not yet available for this ingredient profile.
Pharmacokinetics
Information not yet available for this ingredient profile.
Recommended Dosage
Information not yet available for this ingredient profile.
SETI — Scientific Evidence Transparency Index
Executive Summary — Ingredient Assessment
- 10 studies reviewed
- 0 high-quality studies (meta-analysis or RCT)
- Main clinical benefit observed: Excipient
- Evidence consistency: High consistency across studies (100%)
- Trace iodine content from seaweed -- relevant for thyroid conditions
- May affect absorption of some minerals and medications
- FDA GRAS -- safe at typical use levels
- Vegan and vegetarian friendly
The available scientific evidence for Sodium Alginate indicates notable safety signals that warrant caution. Use should be considered carefully and monitored, particularly in sensitive populations or alongside other medications.
Total SETI Score
High risk| Evidence quality | 10/40 |
| Evidence consistency | 20/20 |
| Safety signals | 0/20 |
| Study recency | 10/10 |
| Evidence transparency | 10/10 |
Evidence Summary
- 10 studies reviewed
- 0 high-quality studies (meta-analysis or systematic review)
- 0 studies identified benefits or no safety concern (GREEN)
- 10 studies reported limited or advisory safety evidence (YELLOW)
Evidence Policy
Only peer-reviewed scientific literature indexed in PubMed or comparable databases is included in this evaluation. Commercial websites, blogs, and marketing materials are excluded. All references include direct traceable links to source documents.
Last updated: 25 მარ 2026, 13:01
Evidence Distribution
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Observational / other LOW evidence YELLOWIn vitro space of Disse model for exploration of drug induced hepatotoxicity. ↗Mesic A et al.. In vitro space of Disse model for exploration of drug induced hepatotoxicity.. Lab Chip. 2026. PMID:41878881.PMID 41878881 ↗Journal Lab ChipYear 2026Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/41878881/
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Observational / other LOW evidence YELLOWAn eco-friendly alkaline lignin/sodium alginate/u03b2-cyclodextrin composite hydrogel for enhanced foliar deposition and sustained control of Botrytis cinerea with azoxystrobin. ↗Lin H et al.. An eco-friendly alkaline lignin/sodium alginate/u03b2-cyclodextrin composite hydrogel for enhanced foliar deposition and sustained control of Botrytis cinerea with azoxystrobin.. Pest Manag Sci. 2026. PMID:41877531.PMID 41877531 ↗Journal Pest Manag SciYear 2026Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/41877531/
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Observational / other LOW evidence YELLOWPlatelet lysate derived macroporous hydrogel loaded with adipose stem cells for spinal cord injury repair. ↗Wang YF et al.. Platelet lysate derived macroporous hydrogel loaded with adipose stem cells for spinal cord injury repair.. Biomater Adv. 2026. PMID:41875610.PMID 41875610 ↗Journal Biomater AdvYear 2026Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/41875610/
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Observational / other LOW evidence YELLOWPreparation of biochar/alginate hydrogel beads and their enhanced Cd(2)u207a removal performance: study on properties and synergistic mechanisms. ↗Zhu X et al.. Preparation of biochar/alginate hydrogel beads and their enhanced Cd(2)u207a removal performance: study on properties and synergistic mechanisms.. Environ Geochem Health. 2026. PMID:41874701.PMID 41874701 ↗Journal Environ Geochem HealthYear 2026Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/41874701/
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Observational / other LOW evidence YELLOWTuning Collagen Molecular Aggregation Behavior: Solvent Shielding in a Biphasic Polar System for Oxidized Sodium Alginate-Mediated Cross-Linking. ↗Hua L et al.. Tuning Collagen Molecular Aggregation Behavior: Solvent Shielding in a Biphasic Polar System for Oxidized Sodium Alginate-Mediated Cross-Linking.. Biomacromolecules. 2026. PMID:41873877.PMID 41873877 ↗Journal BiomacromoleculesYear 2026Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/41873877/
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Observational / other LOW evidence YELLOWSodium tripolyphosphate crosslinking of chitosan improves double-layer microsphere stability and preserves ATP production capacity of thylakoid membranes during simulated gastrointestinal digestion. ↗Yang Z et al.. Sodium tripolyphosphate crosslinking of chitosan improves double-layer microsphere stability and preserves ATP production capacity of thylakoid membranes during simulated gastrointestinal digestion.. Int J Biol Macromol. 2026. PMID:41865940.PMID 41865940 ↗Journal Int J Biol MacromolYear 2026Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/41865940/
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Observational / other LOW evidence YELLOWMultifunctional silver nanoparticles-loaded rutin functionalised sodium alginate beads: Catalysis, corrosion resistance, bactericidal and anti-oxidant studies. ↗Samal S et al.. Multifunctional silver nanoparticles-loaded rutin functionalised sodium alginate beads: Catalysis, corrosion resistance, bactericidal and anti-oxidant studies.. Int J Biol Macromol. 2026. PMID:41865933.PMID 41865933 ↗Journal Int J Biol MacromolYear 2026Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/41865933/
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Observational / other LOW evidence YELLOWOrally delivered, pH-resistant dual coated extracellular vesicles restore intestinal barrier function and suppress colitis. ↗Cho CW et al.. Orally delivered, pH-resistant dual coated extracellular vesicles restore intestinal barrier function and suppress colitis.. Biomaterials. 2026. PMID:41865564.PMID 41865564 ↗Journal BiomaterialsYear 2026Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/41865564/
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Observational / other LOW evidence YELLOWTannic acid one-step induced carboxymethyl chitosanu2011sodium alginate-Pickering emulsions multifunctional composite coatings for efficient preservation of strawberries. ↗Tang J et al.. Tannic acid one-step induced carboxymethyl chitosanu2011sodium alginate-Pickering emulsions multifunctional composite coatings for efficient preservation of strawberries.. Food Chem. 2026. PMID:41865516.PMID 41865516 ↗Journal Food ChemYear 2026Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/41865516/
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Observational / other LOW evidence YELLOWChitosanu2011sodium alginate-thyme essential oil Pickering emulsions: Preservation efficacy and protection of myofibrillar protein structure in refrigerated pork. ↗Zhang H et al.. Chitosanu2011sodium alginate-thyme essential oil Pickering emulsions: Preservation efficacy and protection of myofibrillar protein structure in refrigerated pork.. Meat Sci. 2026. PMID:41865452.PMID 41865452 ↗Journal Meat SciYear 2026Study type Observational / otherEvidence strength LOW evidencePubMed link https://pubmed.ncbi.nlm.nih.gov/41865452/
Score Transparency
0 of 10 approved references (score saturates at 10). More peer-reviewed studies = stronger evidence base.
Method: Q = number of approved references ÷ 10 (capped at 1.0)
Limited — mostly case reports or animal studies
Method: L = mean study-level weight across approved references. Level 1 (meta-analysis / systematic review) = 1.0; Level 2 (RCT) = 0.8; Level 3 (cohort/case-control) = 0.6; Level 4 (case report) = 0.4; Level 5 (animal / in-vitro) = 0.2.
Mixed or neutral — roughly equal benefit and risk signals
Method: D = (sum of risk-scored references − sum of benefit-scored references) ÷ total evidence score, then scaled from [−1, 1] to [0, 1]. 0.0 = pure benefit; 0.5 = neutral; 1.0 = pure risk.
One or more monitoring-level safety signals active
Method: S = 0.5 (neutral baseline) + sum of active signal severity deltas ÷ 10. Severity deltas: Critical = +2.0, High = +1.5, Moderate = +1.0, Low = +0.5. Capped at 1.0.
Final GIRI Score for Sodium Alginate. Risk level thresholds: Low 0–3.0 · Moderate 3.0–5.5 · High 5.5–7.5 · Critical 7.5–10.
Full methodology & data sources
The GIRI Score is computed entirely from structured data — no editorial scoring or subjective weighting is applied at any step.
- References: Only approved references are counted. Each reference is assigned an evidence level (L1–L5) and a direction (risk / neutral / benefit) by the reference manager or AI classifier.
- Safety Signals: Sourced from regulatory agencies (FDA, EMA, Health Canada, TGA, and others) and pharmacovigilance databases. Only active signals count toward the score.
- Formula version: GIRI Score v3.7.0 — Q × L × D × S × 10.
- Limitations: The score reflects published evidence and recorded signals as of the last update date. It is not a clinical risk assessment and should not replace advice from a qualified healthcare professional.
Risk Level Classification
Based on available regulatory signals and scientific evidence, this ingredient presents a low safety concern under normal conditions of use.
0–3.0
3.0–5.5
5.5–7.5
7.5–10
The score pin shows exactly where this ingredient falls on the fixed risk scale.
What drove the Low classification for Sodium Alginate
A score of 2.0 places this ingredient in the Low band. Thresholds: Low 0–3.0 · Moderate 3.0–5.5 · High 5.5–7.5 · Critical 7.5–10.
0 approved references.
Limited — mostly case reports or animal studies (Level 4–5).
Neutral or mixed — benefit and risk signals roughly balanced.
No active signals — S component is at neutral baseline (0.5), contributing no extra risk weight.
No major regulatory restrictions or advisories recorded across monitored jurisdictions (FDA, EMA, Health Canada, TGA, and others).
How are the Low / Moderate / High / Critical thresholds defined?
The four risk levels are fixed score bands. A score is assigned to exactly one level based on where it falls:
| Level | Score | Meaning |
|---|---|---|
| LOW | 0.0 – 2.9 | Sparse or predominantly beneficial evidence. No active safety alerts. |
| MODERATE | 3.0 – 5.4 | Mixed signals — some risk alongside benefit. Caution at high doses or in sensitive groups. |
| HIGH | 5.5 – 7.4 | Multiple studies or regulatory alerts documenting adverse effects. Professional oversight recommended. |
| CRITICAL | 7.5 – 10 | Regulatory restrictions in one or more major jurisdictions. Serious documented harm. Avoid without specialist supervision. |
Thresholds are fixed constants (GIRI_Score_Utils::LEVEL_THRESHOLDS). They do not change per ingredient and are never subject to editorial adjustment.