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Fastin-XR

product on market Capsule Hi-Tech Pharmaceuticals Safety: 100/100
100/100

This product looks safe

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

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Caffeine anhydrous is supported by strong evidence for increasing alertness and metabolic rate. The proprietary blend lacks transparent dosing, resulting in limited evidence regarding its overall efficacy. These ingredients generally function as stimulants to support energy levels.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for Fastin-XR
Open Full PDF View on NIH DSLD →
Details

Label Data

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

Supplement Facts — Evidence Check

Fastin Extended Release Proprietary Blend
375 mg
Market median: 180.0mg (239 products) 49 studies (A:1, B:19)

Other Ingredients

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

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

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 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 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.

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Metadata

Product Details

UPC / SKU8 57084 00098 9
DSLD Entry Date2018-06-25
Product TypeOther Combinations
FormCapsule
DSLD ID178337
Data Updated2026-04-11
Research

Research Evidence

82
Research Sources
51
Avg Quality
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 PubMed DOI
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 PubMed DOI
B Effects of caffeine chewing gum supplementation on exercise performance: A systematic review and meta-analysis
Meta Analysis European journal of sport science 2023 PubMed DOI
B Genetic susceptibility to caffeine intake and metabolism: a systematic review
Systematic Review Journal of translational medicine 2024 PubMed DOI
B Pharmacological interventions for sleepiness and sleep disturbances caused by shift work
Meta Analysis The Cochrane database of systematic reviews 2014 PubMed DOI
B Effects of Caffeine Intake on Endurance Running Performance and Time to Exhaustion: A Systematic Review and Meta-Analysis
Meta Analysis Nutrients 2022 PubMed DOI
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 PubMed DOI
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 PubMed DOI
B Caffeine, CYP1A2 Genotype, and Endurance Performance in Athletes
Rct Medicine and science in sports and exercise 2018 PubMed DOI
B The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness
Rct Nutritional neuroscience 2010 PubMed DOI
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.