🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • Limited research evidence available for ingredients
B Label Compliance Grade

Product Label

📸

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Label Data

2 Softgel(s) Serving Size
30 Servings
Other Combinations Product Type
0% Evidence Coverage

Supplement Facts — Evidence Check

Sytrinol
300 mg

Other Ingredients

extra virgin Olive Oil Gelatin Glycerin purified Water Orange natural flavor non-GMO Soy Lecithin yellow Beeswax Titanium Dioxide Chlorophyllin Riboflavin Based Colorant

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (84% of products) Nutrient (23% of products) Qualified Health (1% of products)

Target Groups

Adult (18 - 50 Years) Gluten Free

Product Information

📋 Directions for Use

Suggested Adult Use: Take 2 softgels daily, with or without food, or as recommended by a nutritionally-informed physician.

⚠️ Warnings & Precautions

Contains soy

🧪 Formulation Notes

Doctor’s Best Flavonoid Complex with Sytrinol contains a patented proprietary blend of polymethoxylated flavones (PMFs) and tocotrienols, clinically tested to work in combination to provide powerful antioxidant protection.

Sytrinol is a formula derived from citrus and palm fruit extracts, which helps support the cardiovascular system by maintaining LDL, HDL and triglyceride levels already within the normal range.

Flavonoid Complex with Sytrinol Healthy Heart

Contains soy

Non-GMO / Gluten free

Additional Information

Helps maintain healthy levels of HDL, LDL and triglycerides Provides powerful antioxidant protection Patented and clinically tested

YDRB134-2

Store in a cool dry place.

Product Details

UPC / SKU 7 53950 00134 3
DSLD Entry Date 2018-02-23
Product Type Other Combinations
Form Softgel Capsule
DSLD ID 81801
Data Updated 2026-04-11

Research Evidence

184 Research Sources
55 Avg Quality Score
91 Systematic Review
75 Meta Analysis
7 Rct
7 Clinical Trial
2 Cochrane Review
1 Openfda Safety
B Treatment of gouty arthritis with traditional Chinese medicine decoction: Meta-analysis, network pharmacology analysis, and molecular docking
Meta Analysis Medicine 2024
B Effects of quercetin supplementation on lipid profile: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2017
B Dietary polyphenols and the risk of metabolic syndrome: a systematic review and meta-analysis
Meta Analysis BMC endocrine disorders 2024
B Quercetin and endurance exercise capacity: a systematic review and meta-analysis
Meta Analysis Medicine and science in sports and exercise 2011
B Dietary flavonoid intake and smoking-related cancer risk: a meta-analysis
Meta Analysis PloS one 2013
B Clinical efficacy evaluation and potential mechanism prediction on Guizhi-Shaoyao-Zhimu decoction in the treatment of gouty arthritis based on meta-analysis, network pharmacology analysis, and molecular docking
Meta Analysis Medicine 2023
B A Systematic Review: Quercetin-Secondary Metabolite of the Flavonol Class, with Multiple Health Benefits and Low Bioavailability
Systematic Review International journal of molecular sciences 2024
B Dietary flavonoid for preventing colorectal neoplasms.
Cochrane Review The Cochrane database of systematic reviews
B Flavonoids for treating venous leg ulcers.
Cochrane Review The Cochrane database of systematic reviews
B The effects of quercetin supplementation on lipid profiles and inflammatory markers among patients with metabolic syndrome and related disorders: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2020
View all evidence for Quercetin →

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