Glucose Optimizer

product on market Tablet or Pill Jarrow Formulas 🟢 Safety: 98/100
Brand: Jarrow Formulas
🟢 98/100

This product looks safe

  • Niacin: 150mg is 4.3× the Tolerable Upper Intake Level (35mg)
  • 58% of ingredients have research evidence
C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Niacin: 150mg is 4.3× the Tolerable Upper Intake Level (35mg)

Label Data

2 Tablet(s) Serving Size
60 Servings
Other Combinations Product Type
58% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
50 mg (56% DV)
5.5 mg (37% DV)
✅ Within RDA (0.4× RDA of 15 mg) 📚 177 studies (Tier A: 3, B: 90)
RDA 15mg This product: 5.5mg UL 1000mg
2.5 mg (208% DV)
✅ 2.1× RDA — within safe limits 📚 76 studies (Tier A: 0, B: 33)
RDA 1.2mg This product: 2.5mg
150 mg (938% DV)
⚠️ Exceeds Tolerable Upper Intake Level by 4.3× (UL: 35 mg) 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 150mg UL 35mg
2.5 mg (147% DV)
✅ 1.9× RDA — within safe limits 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 2.5mg UL 100mg
50 mcg (2083% DV)
📊 20.8× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.05mg
500 mcg (1667% DV)
📊 16.7× RDA — above typical dose 📚 26 studies (Tier A: 0, B: 11)
RDA 0.03mg This product: 0.5mg
12.5 mg (250% DV)
✅ 2.5× RDA — within safe limits 📚 1 studies — no high-quality reviews
RDA 5mg This product: 12.5mg
100 mg (24% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 100mg
5 mcg (9% DV)
✅ Within RDA (0.1× RDA of 0.055 mg) 📚 172 studies (Tier A: 0, B: 67)
RDA 0.055mg This product: 0.005mg UL 0.4mg
0.5 mg (22% DV)
✅ Within RDA (0.2× RDA of 2.3 mg) 📚 8 studies — no high-quality reviews
RDA 2.3mg This product: 0.5mg UL 11mg
100 mcg (286% DV)
✅ 2.9× RDA — within safe limits 📚 197 studies (Tier A: 1, B: 55)
RDA 0.035mg This product: 0.1mg
Bitter Melon Extract, Wild
375 mg
Gymnema sylvestre
150 mg
100 mg
📊 Market median: 200.0mg (198 products) 📚 6 studies — no high-quality reviews
This product: 100mg
Eucalyptus leaf essential Oil Complex
50 mg
50 mg
📊 3.3× RDA — above typical dose (UL: 1000 mg) 📚 177 studies (Tier A: 3, B: 90)
RDA 15mg This product: 50mg UL 1000mg
25 mg
📊 Market median: 167.0mg (311 products) 📚 182 studies (Tier A: 0, B: 65)
This product: 25mg
Banaba Leaf Extract
24 mg

Other Ingredients

Microcrystalline Cellulose Calcium Phosphate Food Starch, Modified Croscarmellose Sodium Hydroxypropyl Cellulose Magnesium Stearate Silicon Dioxide Hydroxypropylmethylcellulose Glycerin

Label Claims — Verification

❓ Nutrient
❓ All Other
❓ Structure/Function
All Other (99% of products) Structure/Function (83% of products) Nutrient (54% of products)

Target Groups

Vegan Vegetarian Adult (18 - 50 Years) No Allergies Gluten Free Dairy Free

Product Information

📋 Directions for Use

Suggested Use: Adults take 2 tablets 2 times a day: 2 in the morning and 2 in the evening with meals or as directed by your qualified healthcare professional.

⚠️ Warnings & Precautions

Warning: During use, advise your medical professional that you are taking Biotin before any blood tests. Consult a healthcare professional before using this product if you are pregnant, nursing, under the age of 18, are taking medication or have a medical condition (especially if being treated for glucose control); if adverse reactions occur, discontinue use.

Consult a healthcare professional before using this product if you are pregnant, nursing, under the age of 18, are taking medication or have a medical condition (especially if being treated for glucose control); if adverse reactions occur, discontinue use.

Keep out of the reach of children.

Do not use if safety seal is damaged or missing.

🧪 Formulation Notes

Jarrow Formulas Glucose Optimizer is a unique blend of ingredients that support antioxidant status and glucose metabolism by the following mechanisms: Eucalyptus- muscle glucose transport and metabolism, and glycogen formation. Banaba- glucose transport. Gymnema- healthy pancreatic function. Glycostat Wild Bitter Melon Extract- a proprietary extract produced from a wild genotype, supports blood glucose metabolism and transport. Alpha Lipoic Acid- A coenzyme in glucose metabolism and supports production of glutathione, which protects the liver and nerves. Magnesium- Metabolism of glucose and production of cellular energy. Resveratrol- Supports cardiovascular health.

Vegan

Glycemic balance Supports glucose metabolism and cellular energy

Gluten free

No wheat, gluten, soybeans, dairy, egg, fish/shellfish, peanuts/tree nuts or sesame.

Additional Information

Store in a cool, dry place.

Energy

Product Details

UPC / SKU 7 90011 29002 5
DSLD Entry Date 2024-02-22
Product Type Other Combinations
Form Tablet or Pill
Brand Jarrow Formulas
DSLD ID 307595
Data Updated 2026-04-11

Research Evidence

371 Research Sources
54 Avg Quality Score
148 Meta Analysis
82 Systematic Review
71 Rct
62 Clinical Trial
2 Regulatory Source
1 Cochrane Review
1 Narrative Review
1 Other
1 Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
PubMed DOI Cochrane
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
PubMed DOI Cochrane
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
PubMed DOI Cochrane
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
PubMed DOI Cochrane
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020
PubMed DOI Cochrane
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
PubMed DOI Cochrane
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024
PubMed DOI
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024
PubMed DOI
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021
PubMed DOI
View all evidence for Vitamin C →

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