PlainVitamins

Fenterdren

by Health Science Nutrition · capsule · 90 capsules

  • Off the market since November 2019 (NIH)
  • DSLD label 37643
  • Serving 1 capsule
  • 90 servings

Fenterdren by Health Science Nutrition lists 3 ingredients, 3 with an amount per serving of 1 capsule, such as 375 mg of infinergy(TM) dicaffeine malate, 37.5 mg of synephrine and 37.5 mg of phenylethylamine. Its current label entered the NIH Dietary Supplement Label Database on October 10, 2014.

What is in Fenterdren?

Each row as the label prints it, per serving of 1 capsule. 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).

Fenterdren: Supplement Facts rows against the market (DSLD label 37643, January 2026 release)
IngredientAmount% DVAmong products listing it
Infinergy(TM) Dicaffeine Malate375 mgCaffeine in Fenterdren against 3,358 products375 mg per serving; the middle half of products list 100 mg to 275 mg, the median 200 mg.375 mg

Higher than 92% of 3,358 products listing caffeine (median 200 mg).

Synephrine37.5 mgSynephrine in Fenterdren against 129 products37.5 mg per serving; the middle half of products list 20 mg to 40 mg, the median 25 mg.37.5 mg

Higher than 71% of 129 products listing synephrine (median 25 mg).

Phenylethylamine37.5 mgPhenylethylamine in Fenterdren against 41 products37.5 mg per serving; the middle half of products list 37.5 mg to 300 mg, the median 100 mg.37.5 mg

66% of 41 products listing phenylethylamine give more (median 100 mg).

Source: NIH ODS Dietary Supplement Label Database, label 37643 (entered October 10, 2014), 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?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • Its 375 mg of infinergy(TM) dicaffeine malate (filed by NIH under caffeine) is higher than 92% of the 3,358 caffeine products that print an amount; 241 list more.

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.

Which products have the closest formulas?

The products whose ingredient lists overlap most with Fenterdren's, rare ingredients counting for more.

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

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
Instructions for use: Take 1 capsule approximately 30 minutes before breakfast and lunch with 8-10 ounces of water.
Warnings
As with any dietary supplement or vitamin consult with your physician before using.
Not for use by or sale to persons under 18 years of age.
Do not use if you are pregnant or nursing or at risk of or being treated for high blood pressure, heart disease, renal disease, hyperthyroidism, spasms, psychiatric disease, suffer from migraines, have asthma, or are taking asthma medication. Consult your physician before use if you are taking a monoamine oxidase inhibitor (MAOI).
WARNING: Do not exceed recommended dose

Source: label statements in DSLD label 37643.

What else is on the label?

Other ingredients: Magnesium Stearate, Gelatin.

How many labels does Fenterdren have?

One label is on file, entered on October 10, 2014.

  1. Label 37643 (current) Entered October 10, 2014 · off the market November 20, 2019 · 90 capsules

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

Who makes it?

The label names Health Science Nutrition U.S.A. Inc. (distributor), Orem, UT. All Health Science Nutrition products.

Where next?