🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

1 Capsule(s) Serving Size
45 Servings
Other Combinations Product Type
50% Evidence Coverage

Supplement Facts — Evidence Check

Fastin Extended Release Proprietary Blend
425 mg
📊 Market median: 180.0mg (239 products) 📚 43 studies (Tier A: 1, B: 19)
This product: 100mg UL 400mg

Other Ingredients

Hydroxypropyl Methylcellulose Dicalcium Phosphate Sodium Starch Glycolate Magnesium Stearate Silica FD&C Blue #1 FD&C Red #40 FD&C Yellow #6

Label Claims — Verification

All Other
Structure/Function
All Other (98% of products) Structure/Function (93% of products) Nutrient (19% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Dosage: Take 1-2 capsules in the morning and 1 capsule after lunch. Do not exceed 4 capsules daily.

⚠️ Warnings & Precautions

Do not exceed 4 capsules daily.

Warning: Not for use by individuals under the age of 18 years.

Do not use if you are pregnant or nursing. This product can raise blood pressure and interfere with other drugs you may be taking.

Talk to your doctor about this product.

Tamper evident Do not use if printed seal is cut, torn or missing

Individuals who consume caffeine with this product may experience serious adverse health effects. Individuals who are sensitive to the effects of caffeine should consult a licensed health care professional before consuming this product.

Do not consult synephrine or caffeine from other sources, including but not limited to, coffee, tea, soda or other dietary products or medications containing caffeine or phenylphrine.

Do not use for more than 8 weeks.

Consult with your physician prior to use if you are taking medication, including but not limited to MAOI inhibitors, aspirin, antidepressants, nonsteriodal anti-inflammatory drugs or products containing phenylephrine, ephedrine, pseudophedrine, or other stimulants.

Consult your physician prior to use if you have a medical condition, including but not limited to, heart, liver, kidney, or thyroid disease, psychiatric or epileptic disorders, difficulty urinating, diabetes, high blood pressure, cardiac arrhythmia, recurrent headaches, enlarged prostate or glaucoma. Discontinue 2 weeks prior to surgery or if you experience rapid heart beat, dizziness, severe headache or shortness of breath. In case of accidental overdose, seek professional assistance or contact a poison control center immediately. Avoid alcohol while taking this product. Exceeding recommended serving may cause serious adverse health effects, including heart attack and stroke. Improper use of this product may be hazardous to a person's health. To report adverse effects call FDA's Medwatch at 1-800-332-1088

Additional Information

Extended release capsules 525mg

The world's most advanced weight loss aid ever developed with extended release technology Revolutionary diet aid for energy and weight loss!

(Warnings/Information continued on back of label) Sale to persons 17 years of age or younger is prohibited.

Peel here

Product Details

UPC / SKU 8 53598 00378 2
DSLD Entry Date 2018-06-25
Product Type Other Combinations
Form Capsule
DSLD ID 178236
Data Updated 2026-04-11

Research Evidence

82 Research Sources
51 Avg Quality Score
28 Rct
19 Meta Analysis
17 Clinical Trial
16 Systematic Review
A Preconception lifestyle advice for people with infertility
Meta Analysis The Cochrane database of systematic reviews 2021
B The effects of caffeine intake on weight loss: a systematic review and dos-response meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2019
B Effects of caffeine chewing gum supplementation on exercise performance: A systematic review and meta-analysis
Meta Analysis European journal of sport science 2023
B Genetic susceptibility to caffeine intake and metabolism: a systematic review
Systematic Review Journal of translational medicine 2024
B Pharmacological interventions for sleepiness and sleep disturbances caused by shift work
Meta Analysis The Cochrane database of systematic reviews 2014
B Effects of Caffeine Intake on Endurance Running Performance and Time to Exhaustion: A Systematic Review and Meta-Analysis
Meta Analysis Nutrients 2022
B The effects of green tea extract supplementation on body composition, obesity-related hormones and oxidative stress markers: a grade-assessed systematic review and dose-response meta-analysis of randomised controlled trials
Meta Analysis The British journal of nutrition 2024
B Effect of green tea catechins with or without caffeine on anthropometric measures: a systematic review and meta-analysis
Systematic Review The American journal of clinical nutrition 2010
B Caffeine, CYP1A2 Genotype, and Endurance Performance in Athletes
Rct Medicine and science in sports and exercise 2018
B The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness
Rct Nutritional neuroscience 2010
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