PlainVitamins

Firestim

by Musclegen Performance Nutrition · capsule · 120 capsules

  • On the market (NIH)
  • UPC 6 12520 51347 4
  • DSLD label 249691
  • Serving 1 capsule
  • 120 servings

Firestim by Musclegen Performance Nutrition lists 15 ingredients, 9 with an amount per serving of 1 capsule, such as 20 mg of pantothenic acid, 200 mcg of chromium, 40 mg of L-tyrosine and 20 mg of ginger root powder; 6 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on July 27, 2021.

What is in Firestim?

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).

Firestim: Supplement Facts rows against the market (DSLD label 249691, January 2026 release)
IngredientAmount% DVAmong products listing it
Pantothenic Acidas D-Calcium PantothenatePantothenic Acid (Form: as D-Calcium Pantothenate)20 mg200%Pantothenic Acid (Vitamin B5) in Firestim against 10,060 products20 mg per serving; the middle half of products list 6 mg to 50 mg, the median 12 mg.DV 5 mg20 mg

Higher than 55% of 10,060 products listing pantothenic acid (vitamin B5) (median 12 mg).

Chromiumas Chromium ChelateChromium (Form: as Chromium Chelate)200 mcg167%Chromium in Firestim against 7,825 products200 mcg per serving; the middle half of products list 45 mcg to 200 mcg, the median 100 mcg.DV 35 mcg200 mcg

Higher than 72% of 7,825 products listing chromium (median 100 mcg).

Therm-EFX 4x Caffeine MatrixTherm-EFX 4x Caffeine Matrix Note: Consisting of525 mg
Guarana 22% extractin the blend, no amount given
Green Tea leaf 50% extractin the blend, no amount given
Cocoa extractas TheobromineCocoa extract (Form: 10% Theobromine)in the blend, no amount given
White Willow Bark 15% extractin the blend, no amount given
Green Coffee bean 70% extractin the blend, no amount given
Raspberry Ketonesin the blend, no amount given
L-Tyrosine40 mgTyrosine in Firestim against 1,680 products40 mg per serving; the middle half of products list 150 mg to 989 mg, the median 500 mg.40 mg

92% of 1,680 products listing tyrosine give more (median 500 mg).

Ginger root powder20 mgGinger in Firestim against 1,770 products20 mg per serving; the middle half of products list 25 mg to 150 mg, the median 60 mg.20 mg

77% of 1,770 products listing ginger give more (median 60 mg).

Licorice root powder20 mgLicorice in Firestim against 888 products20 mg per serving; the middle half of products list 42 mg to 300 mg, the median 100 mg.20 mg

88% of 888 products listing licorice give more (median 100 mg).

N-Acetyl L-Carnitine25 mgAcetyl L-Carnitine in Firestim against 933 products25 mg per serving; the middle half of products list 200 mg to 525 mg, the median 500 mg.25 mg

95% of 933 products listing acetyl L-carnitine give more (median 500 mg).

Cayenne Pepper fruit powder25 mgCapsicum in Firestim against 874 products25 mg per serving; the middle half of products list 25 mg to 100 mg, the median 44.5 mg.25 mg

65% of 874 products listing capsicum give more (median 44.5 mg).

Uva Ursi leaf powder25 mgUva Ursi in Firestim against 360 products25 mg per serving; the middle half of products list 25 mg to 206.25 mg, the median 100 mg.25 mg

75% of 360 products listing uva ursi give more (median 100 mg).

Juniper Berry powder25 mgJuniper in Firestim against 287 products25 mg per serving; the middle half of products list 20 mg to 100 mg, the median 50 mg.25 mg

56% of 287 products listing juniper give more (median 50 mg).

Source: NIH ODS Dietary Supplement Label Database, label 249691 (entered July 27, 2021), 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:

  • 92% of the 1,680 products that print an amount of tyrosine list more than its 40 mg of L-tyrosine (filed by NIH under tyrosine) (median 500 mg).
  • 88% of the 888 products that print an amount of licorice list more than its 20 mg of licorice (median 100 mg).
  • 95% of the 933 products that print an amount of acetyl L-carnitine list more than its 25 mg of N-acetyl L-carnitine (filed by NIH under acetyl L-carnitine) (median 500 mg).

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?

1 product lists the very same ingredients; the nearest amounts come first.

  • Burn AMGenepro Protein same ingredients
  • SweatWellthy Nutraceuticals 7 shared, 44% alike
  • Bellisima SlimThe ADL Group 6 shared, 35% alike

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
Suggested Use: 1 capsule taken daily preferably with a meal or as directed by a healthcare professional.
Warnings
Caution: Do not exceed recommended dose. Avoid taking this product in conjunction with other dietary supplements which contain high levels of elemental chromium.
This product is not intended for pregnant or nursing mothers, children under the age of 18, or individuals taking prescription drugs.
Warning: This product contains 85 mg of caffeine per serving. Equivalent to 4/5 cup of coffee.
Keep out of the reach of children.
Contains desiccant packet for freshness. Do not eat packet. Do not use if safety seal is damaged or missing.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 249691.

What else is on the label?

Other ingredients: Gelatin, Maltodextrin, Silicon Dioxide, Magnesium Stearate, FD&C Red # 40.

How many labels does Firestim have?

One label is on file, entered on July 27, 2021.

  1. Label 249691 (current) Entered July 27, 2021 · on the market · 120 capsules · UPC 6 12520 51347 4

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

Who makes it?

The label names Musclegen Research, Inc (distributor), Cary, NC. All Musclegen Performance Nutrition products.

Where next?