🟢 90/100

This product looks safe

  • Contains proprietary blend — exact ingredient amounts not disclosed
  • 50% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Safety Alerts

ℹ️ Contains proprietary blend — exact ingredient amounts not disclosed

Label Data

1 Tablet(s) Serving Size
60 Servings
Non-Nutrient/Non-Botanical Product Type
50% Evidence Coverage

Supplement Facts — Evidence Check

Proprietary Blend (Non-Nutrient/Non-Botanical)
245 mg
📊 Market median: 180.0mg (239 products) 📚 43 studies (Tier A: 1, B: 19)
This product: 100mg UL 400mg

Other Ingredients

Dextrose Microcrystalline Cellulose Hydroxypropyl Methylcellulose Stearic Acid Magnesium Stearate Sodium Starch Glycolate Starch Silica

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

Directions: Take 1-2 tablets in the morning and 1 tablet after lunch.

⚠️ Warnings & Precautions

Do not exceed 4 tablets 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.

Sale to persons 17 years of age or younger is prohibited.

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. Individuals who are sensitive to the effects of caffeine should consult a doctor before consuming this product.

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

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, nonsteroidal anti-inflammatory drugs or products containing phenylephrine ephedrine, pseudoephedrine, 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 persons health.

🧪 Formulation Notes

(Phenylethylamine HCl)

Additional Information

Fastin(R) is heat and moisture sensitive, and the bottle should remain sealed after using. Keep desiccant in the bottle to avoid moisture. Store at room temperature 59(0)- 869))F protected from moisture, heat and light. Failure to do so may cause pills to slightly turn brown. This will not affect the efficacy, potency or safety of the product, but wil cause Fastin(R) to become brittle.

Pharmaceutical-Grade weight loss aid for optimal diet & energy

HTP HI-TECH PHARMACEUTICALS

(Warnings/information continued on back of label)

Peel Here

To report adverse effects call FDA's MedWatch at 1-800-332-1088

Product Details

UPC / SKU 8 57084 00074 3
DSLD Entry Date 2015-08-25
Product Type Non-Nutrient/Non-Botanical
Form Tablet or Pill
DSLD ID 48076
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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