Diet-Phen

product on market Tablet or Pill Source Naturals 🟢 Safety: 100/100
Brand: Source Naturals
🟢 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 Tablet(s) Serving Size
90 Servings
Other Combinations Product Type
50% Evidence Coverage

Supplement Facts — Evidence Check

16 mg (80% DV)
✅ 1.1× RDA — within safe limits 📚 193 studies (Tier A: 5, B: 63)
RDA 14mg This product: 16mg UL 35mg
16 mg (800% DV)
📊 12.3× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 16mg UL 100mg
Calcium
85 mg (8% DV)
130 mcg (108% DV)
📊 3.7× RDA — above typical dose 📚 197 studies (Tier A: 1, B: 55)
RDA 0.035mg This product: 0.13mg
Sodium
5 mg (1% DV)
600 mg
📊 Market median: 300.0mg (240 products) 📚 11 studies — no high-quality reviews
This product: 600mg
L-Phenylalanine
333 mg
200 mg
📊 Market median: 495.0mg (70 products)
Median 495.0mg This product: 200mg
100 mg
📊 Market median: 500.0mg (861 products) 📚 60 studies (Tier A: 4, B: 13)
This product: 100mg
88 mg
📊 Market median: 260.0mg (249 products) 📚 156 studies (Tier A: 4, B: 61)
This product: 88mg
Yerba Mate extract
66 mg
66 mg
📊 Market median: 200.0mg (198 products) 📚 6 studies — no high-quality reviews
This product: 66mg
33 mg
📊 Market median: 250.0mg (337 products) 📚 125 studies (Tier A: 1, B: 41)
This product: 33mg
6 mg
📊 Market median: 167.0mg (311 products) 📚 182 studies (Tier A: 0, B: 65)
This product: 6mg

Other Ingredients

Dibasic Calcium Phosphate Stearic Acid modified Cellulose Gum Silica

Label Claims — Verification

❓ All Other
❓ Structure/Function
All Other (97% of products) Structure/Function (86% of products) Nutrient (36% of products)

Target Groups

Adult (18 - 50 Years) Dairy Free Sugar Free

Product Information

📋 Directions for Use

Suggested Use: 1 to 2 tablets in the morning 1/2 hour before breakfast, and one tablet 1/2 hour before lunch. Use in conjunction with the Maximum Metabolism Weight Loss Plan. Do not take before bedtime. Do not exceed 3 tablets daily. Not intended for prolonged use or by those under medical supervision. Do not consume alcohol while using this product.

⚠️ Warnings & Precautions

Contains wheat.

Warning: Do not exceed directed amount. Each tablet contains 46 mg of caffeine, which is approximately equal to half a cup of coffee.

If you are pregnant, may become pregnant, breastfeeding, or have any type of medical condition, consult your healthcare professional before using this product. Do not use this product while taking any medication without the advice of your physician or pharmacist. St. John's wort is known to interfere with many prescription and non-prescription drugs, and it may also cause increased photosensitivity; limit exposure to UV radiation.

Discontinue use if nervousness, tremor, sleeplessness, or nausea occur. Contains phenylalanine. Not to be used by phenylketonurics.

Do not use if either tamper-evident seal is broken or missing.

Keep out of the reach of children. Not intended for use by persons under the age of 18.

🧪 Formulation Notes

With St. John's Wort

Diet-Phen can support a healthy metabolism and energy levels. St. John's wort, standardized to 0.3% hypericins, can help support a positive mood. L-Phenylalanine is the precursor to a neurostransmitter that helps support an alert state.

Contains no dairy, egg, or soy. Contains no sugar, preservatives, or artificial color, flavor or fragrance.

Product Details

UPC / SKU 0 21078 01127 9
DSLD Entry Date 2020-02-26
Product Type Other Combinations
Form Tablet or Pill
Brand Source Naturals
DSLD ID 213987
Data Updated 2026-04-11

Research Evidence

241 Research Sources
55 Avg Quality Score
113 Meta Analysis
75 Systematic Review
32 Rct
11 Clinical Trial
3 Other
3 Regulatory Source
1 Cochrane Review
1 Narrative Review
1 Openfda Safety
A Niacin for primary and secondary prevention of cardiovascular events
Meta Analysis The Cochrane database of systematic reviews 2017
PubMed DOI Cochrane
A Use of high potency statins and rates of admission for acute kidney injury: multicenter, retrospective observational analysis of administrative databases
Meta Analysis BMJ (Clinical research ed.) 2013
PubMed DOI
A Effect on cardiovascular risk of high density lipoprotein targeted drug treatments niacin, fibrates, and CETP inhibitors: meta-analysis of randomised controlled trials including 117,411 patients
Meta Analysis BMJ (Clinical research ed.) 2014
PubMed DOI
A A terminal metabolite of niacin promotes vascular inflammation and contributes to cardiovascular disease risk
Meta Analysis Nature medicine 2024
PubMed DOI
A Meta-analysis and imputation refines the association of 15q25 with smoking quantity
Meta Analysis Nature genetics 2010
PubMed DOI
A Genome-wide meta-analyses identify multiple loci associated with smoking behavior
Meta Analysis Nature genetics 2010
PubMed DOI
A Antidepressants for smoking cessation
Meta Analysis The Cochrane database of systematic reviews 2014
PubMed DOI
A Topical azelaic acid, salicylic acid, nicotinamide, sulphur, zinc and fruit acid (alpha-hydroxy acid) for acne
Meta Analysis The Cochrane database of systematic reviews 2020
PubMed DOI Cochrane
B Assessment of the Role of Niacin in Managing Cardiovascular Disease Outcomes: A Systematic Review and Meta-analysis
Meta Analysis JAMA network open 2019
PubMed DOI
B Association Between Lowering LDL-C and Cardiovascular Risk Reduction Among Different Therapeutic Interventions: A Systematic Review and Meta-analysis
Meta Analysis JAMA 2016
PubMed DOI
View all evidence for Niacin →

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