🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 47% of ingredients have research evidence
A Label Compliance Grade

Product Label

📸

Have a supplement label? Find it here.

Upload a photo of any supplement label to search our database of 92,312 products.

Label Data

9.2 Gram(s) Serving Size
30 Servings
Other Combinations Product Type
47% Evidence Coverage

Supplement Facts — Evidence Check

Calories
15 Calorie(s)
Total Carbohydrates
6 Gram(s) (2% DV)
Total Sugars
0.15 mg (13% DV)
✅ Within RDA (0.1× RDA of 1.2 mg) 📚 76 studies (Tier A: 0, B: 33)
RDA 1.2mg This product: 0.15mg
0.17 mg (13% DV)
✅ Within RDA (0.1× RDA of 1.3 mg) 📚 12 studies (Tier A: 0, B: 1)
RDA 1.3mg This product: 0.17mg
20 mg (125% DV)
✅ 1.4× RDA — within safe limits 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 20mg UL 35mg
0.2 mg (12% DV)
✅ Within RDA (0.2× RDA of 1.3 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 0.2mg UL 100mg
0.6 mcg (25% DV)
✅ Within RDA (0.2× RDA of 0.0024 mg) 📚 138 studies (Tier A: 1, B: 44)
RDA 0.0024mg This product: 0.0006mg
100 mg (18% DV)
✅ Within RDA (0.2× RDA of 550 mg) 📚 36 studies (Tier A: 1, B: 7)
RDA 550mg This product: 100mg UL 3500mg
Calcium
55 mg (4% DV)
Sodium
35 mg (2% DV)
CarnoSyn
250 mg
200 mg
📊 Market median: 180.0mg (239 products) 📚 43 studies (Tier A: 1, B: 19)
This product: 200mg UL 400mg
📊 Market median: 450.0mg (167 products)
Median 450.0mg This product: 200mg
100 mg
📊 Market median: 500.0mg (861 products) 📚 60 studies (Tier A: 4, B: 13)
This product: 100mg
📊 Market median: 300.0mg (122 products) 📚 22 studies (Tier A: 0, B: 7)
This product: 50mg
📊 Market median: 650.0mg (87 products) 📚 1 studies — no high-quality reviews
This product: 50mg
Cayenne Fruit Extract
33.34 mg
Black Pepper Fruit Extract
5 mg

Other Ingredients

Gum Arabic Natural & Artificial Flavors Citric Acid Sucralose Dicalcium Phosphate FD&C Red #40 Soybean Oil Palm Oil Cottonseed Oil Hydroxypropyl Methylcellulose Maltodextrin Microcrystalline Cellulose Shellac Silica Sugar

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (85% of products) Nutrient (48% of products) No Claim (1% of products)

Target Groups

Adult (18 - 50 Years) Sugar Free

Product Information

📋 Directions for Use

Directions: As a dietary supplement, mix one ultra-concentrated scoop (9.2g) into 10-12 fl. oz. of cold water and enjoy for an invigorating energy and metabolic boost. On training days, take 30-45 prior to exercise. On non-training days, take one serving in the morning. For personalized stacking suggestions and to learn more, visit www.totallen.com.

⚠️ Warnings & Precautions

Each serving provides 200mg of caffeine.

Keep out of reach of children.

Do not take prior to bedtime. Do not exceed one serving per day. Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. Discontinue use two weeks prior to surgery.

Consult your physician prior to using this product if you are pregnant, nursing, taking medication or have a medical condition.

Contains a bioengineered food ingredient. Niacin may cause a temporary flushing reaction.

🧪 Formulation Notes

Metabolism enhancing powder Clinically proven to burn 3x more calories In a double-blind, randomized, placebo-controlled, crossover study, 25 subjects exercised on a treadmill on two occasions. On one occasion, the subjects took the thermogenic blend before exercise, and on the second occasion, they burned three times more calories before, 3% more calories during and 12 times more calories after exercise compared to when they took the placebo. Fuels energy & fat metabolism

Sugar free

Fruit punch Natural & artificial flavors

Clinically studied

Additional Information

Notice: Significant product settling can occur.

Store in a cool, dry place.

For more information: 1-888-462-2548 GNC.com

Product Details

UPC / SKU 0 48107 19314 0
DSLD Entry Date 2024-06-20
Product Type Other Combinations
Form Powder
DSLD ID 312259
Data Updated 2026-04-11

Research Evidence

22 Research Sources
49 Avg Quality Score
8 Rct
4 Meta Analysis
4 Clinical Trial
3 Systematic Review
1 Cochrane Review
1 Regulatory Source
B Effect of vitamin B2, vitamin C, vitamin D, vitamin E and folic acid in adults with essential hypertension: a systematic review and network meta-analysis
Systematic Review BMJ open 2024
B Effect of Vitamin B2 supplementation on migraine prophylaxis: a systematic review and meta-analysis
Meta Analysis Nutritional neuroscience 2022
B Supplementary vitamin E, selenium, cysteine and riboflavin for preventing kwashiorkor in preschool children in developing countries
Systematic Review The Cochrane database of systematic reviews 2010
B Riboflavin supplements for blood pressure lowering in adults.
Cochrane Review The Cochrane database of systematic reviews
B Associations of dietary vitamin B1, vitamin B2, vitamin B6, and vitamin B12 with the risk of depression: a systematic review and meta-analysis
Meta Analysis Nutrition reviews 2022
C Prophylaxis of migraine headaches with riboflavin: A systematic review
Systematic Review Journal of clinical pharmacy and therapeutics 2017
C Medium-dose riboflavin as a prophylactic agent in children with migraine: a preliminary placebo-controlled, randomised, double-blind, cross-over trial
Rct Cephalalgia : an international journal of headache 2010
C The efficacy of 2 different phakic intraocular lens implant in keratoconus as an isolated procedure or combined with collagen crosslinking and intra-stromal corneal ring segments: a systematic review and meta-analysis
Meta Analysis International ophthalmology 2023
C Epithelium-off photochemical corneal collagen cross-linkage using riboflavin and ultraviolet a for keratoconus and keratectasia: a systematic review and meta-analysis
Meta Analysis The ocular surface 2014
C Improvement of migraine symptoms with a proprietary supplement containing riboflavin, magnesium and Q10: a randomized, placebo-controlled, double-blind, multicenter trial
Rct The journal of headache and pain 2015
View all evidence for Riboflavin →

Compare Similar Products

View all Riboflavin products →