PlainVitamins

Diet-Phen

by Source Naturals · tablet or pill · 180 tablets

  • On the market (NIH)
  • UPC 0 21078 01127 9
  • DSLD label 213987
  • Serving 1 to 2 tablets; amounts per 2 tablets
  • 90 servings

Diet-Phen by Source Naturals lists 19 ingredients, 19 with an amount per serving of 2 tablets, such as 16 mg of niacinamide, 16 mg of vitamin B6, 85 mg of calcium and 130 mcg of chromium, beside 1 Nutrition Facts row (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on February 26, 2020.

What is in Diet-Phen?

Each row as the label prints it, per serving of 2 tablets. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

Diet-Phen: Supplement Facts rows against the market (DSLD label 213987, January 2026 release)
IngredientAmount% DVAmong products listing it
Niacinamide16 mg80%Niacin in Diet-Phen against 12,413 products16 mg per serving; the middle half of products list 13.2 mg to 48 mg, the median 20 mg.DV 16 mgUL 35 mg16 mg

68% of 12,413 products listing niacin give more (median 20 mg).

Vitamin B6as Pyridoxine HydrochlorideVitamin B-6 (Form: as Pyridoxine HCl)16 mg800%Vitamin B6 in Diet-Phen against 15,277 products16 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg16 mg

Higher than 70% of 15,277 products listing vitamin B6 (median 6 mg).

Calcium85 mg8%Calcium in Diet-Phen against 17,831 products85 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg85 mg

61% of 17,831 products listing calcium give more (median 115 mg).

Chromium130 mcg108%Chromium in Diet-Phen against 7,825 products130 mcg per serving; the middle half of products list 45 mcg to 200 mcg, the median 100 mcg.DV 35 mcg130 mcg

Higher than 68% of 7,825 products listing chromium (median 100 mcg).

Chromium Polynicotinate100 mcg
Chromium Picolinate100 mcgChromium Picolinate in Diet-Phen against 121 products100 mcg per serving; the middle half of products list 100 mcg to 500 mcg, the median 200 mcg.100 mcg

69% of 121 products listing chromium picolinate give more (median 200 mcg).

Sodium5 mg1%Sodium in Diet-Phen against 14,514 products5 mg per serving; the middle half of products list 15 mg to 142 mg, the median 55 mg.5 mg

89% of 14,514 products listing sodium give more (median 55 mg).

St. John's Wort leaf & flower extractSt. John's Wort leaf & flower extract PlantPart: leaf & flower Genus: Hypericum Species: perforatum Note: (standardized extract 0.3%) (yielding)600 mgSt. John's Wort in Diet-Phen against 338 products600 mg per serving; the middle half of products list 250 mg to 450 mg, the median 300 mg.600 mg

Higher than 79% of 338 products listing St. John's wort (median 300 mg).

Hypericins1.8 mgHypericin in Diet-Phen against 33 products1,800 mcg per serving; the middle half of products list 900 mcg to 1,800 mcg, the median 900 mcg.1,800 mcg

Higher than 73% of 33 products listing hypericin (median 900 mcg).

L-Phenylalanine333 mgPhenylalanine in Diet-Phen against 611 products333 mg per serving; the middle half of products list 100 mg to 597.5 mg, the median 250 mg.333 mg

Higher than 59% of 611 products listing phenylalanine (median 250 mg).

Guarana extractGuarana extract Note: 22% yielding200 mgGuarana in Diet-Phen against 317 products200 mg per serving; the middle half of products list 50 mg to 300 mg, the median 125 mg.200 mg

Higher than 56% of 317 products listing guarana (median 125 mg).

Caffeine44 mgCaffeine in Diet-Phen against 3,358 products93 mg per serving; the middle half of products list 100 mg to 275 mg, the median 200 mg.93 mg

83% of 3,358 products listing caffeine give more (median 200 mg).

Acetyl L-Carnitine HCl100 mgAcetyl L-Carnitine in Diet-Phen against 933 products100 mg per serving; the middle half of products list 200 mg to 525 mg, the median 500 mg.100 mg

80% of 933 products listing acetyl L-carnitine give more (median 500 mg).

Green Tea leaf extractGreen Tea leaf extract PlantPart: leaf Note: 50% yielding88 mgGreen Tea in Diet-Phen against 2,595 products88 mg per serving; the middle half of products list 50 mg to 250 mg, the median 100 mg.88 mg

62% of 2,595 products listing green tea give more (median 100 mg).

Caffeine44 mg
Yerba Mate extractYerba Mate extract Note: 8% yielding66 mgMate in Diet-Phen against 131 products66 mg per serving; the middle half of products list 50 mg to 400 mg, the median 100 mg.66 mg

66% of 131 products listing mate give more (median 100 mg).

Caffeine5 mg
Lipoic Acid66 mgAlpha Lipoic Acid in Diet-Phen against 2,407 products66 mg per serving; the middle half of products list 25 mg to 150 mg, the median 50 mg.66 mg

Higher than 54% of 2,407 products listing alpha lipoic acid (median 50 mg).

Ginger33 mgGinger in Diet-Phen against 1,770 products33 mg per serving; the middle half of products list 25 mg to 150 mg, the median 60 mg.33 mg

67% of 1,770 products listing ginger give more (median 60 mg).

Resveratrolas Polygonum cuspidatum root extractResveratrol (Form: from Polygonum cuspidatum root extract PlantPart: root Genus: Polygonum Species: cuspidatum)6 mgResveratrol in Diet-Phen against 1,123 products6 mg per serving; the middle half of products list 20 mg to 125 mg, the median 50 mg.6 mg

88% of 1,123 products listing resveratrol give more (median 50 mg).

Source: NIH ODS Dietary Supplement Label Database, label 213987 (entered February 26, 2020), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.

The NIH database records one serving a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions
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
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.
Allergens and what it does not contain
Contains no dairy, egg, or soy. Contains no sugar, preservatives, or artificial color, flavor or fragrance.

Source: label statements in DSLD label 213987.

What else is on the label?

Other ingredients: Dibasic Calcium Phosphate, Stearic Acid, modified Cellulose Gum, Silica.

How many labels does Diet-Phen have?

3 labels are on file under this name since February 26, 2020: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 213987 (current) Entered February 26, 2020 · on the market · 180 tablets · UPC 0 21078 01127 9
  2. Label 213985 Entered February 26, 2020 · on the market · 90 tablets · UPC 0 21078 01126 2
  3. Label 213980 Entered February 26, 2020 · on the market · 45 tablets · UPC 0 21078 01125 5

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Source Naturals, Inc. (distributor), Santa Cruz, CA. All Source Naturals products.

Where next?