Testo Fuel

by Testo Fuel · capsule · 120 capsules

  • On the market (NIH)
  • DSLD label 206283
  • Serving 4 capsules
  • 30 servings

Testo Fuel by Testo Fuel lists 9 ingredients, 9 with an amount per serving of 4 capsules, such as 5,000 IU (125 mcg) of vitamin D3, 18 mcg of vitamin K2, 5 mg of vitamin B6 and 200 mg of magnesium. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2019.

What is in Testo Fuel?

Each row as the label prints it, per serving of 4 capsules. 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).

Testo Fuel: Supplement Facts rows against the market (DSLD label 206283, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin D35,000 IU (125 mcg)1,250%Vitamin D in Testo Fuel against 14,175 products125 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg125 mcg

Higher than 92% of 14,175 products listing vitamin D (median 15 mcg). 1.3 times the adult UL a day.

Vitamin K218 mcg23%Vitamin K in Testo Fuel against 4,607 products18 mcg per serving; the middle half of products list 35 mcg to 100 mcg, the median 80 mcg.DV 120 mcg18 mcg

92% of 4,607 products listing vitamin K give more (median 80 mcg).

Vitamin B6as Pyridoxine HydrochlorideVitamin B6 (Form: as Pyridoxine HCl)5 mg250%Vitamin B6 in Testo Fuel against 15,277 products5 mg per serving; the middle half of products list 2 mg to 20 mg, the median 6 mg.DV 1.7 mgUL 100 mg5 mg

51% of 15,277 products listing vitamin B6 give more (median 6 mg).

Magnesiumas Magnesium AspartateMagnesium (Form: as Magnesium Aspartate)200 mg50%Magnesium in Testo Fuel against 14,003 products200 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg200 mg

Higher than 75% of 14,003 products listing magnesium (median 86 mg).

Zincas Zinc Aspartate, Zinc MonomethionineZinc (Form: as Zinc Monomethionine, and Zinc Aspartate)10 mg67%Zinc in Testo Fuel against 13,186 products10 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg10 mg

51% of 13,186 products listing zinc give more (median 11 mg).

D-Aspartic Acid2,300 mgD-Aspartic Acid in Testo Fuel against 134 products2.3 g per serving; the middle half of products list 1 g to 3 g, the median 2.3 g.2.3 g

49% of 134 products listing D-aspartic acid give more (median 2.3 g).

Asian Red Panax Ginseng100 mgPanax Ginseng in Testo Fuel against 160 products100 mg per serving; the middle half of products list 46 mg to 200 mg, the median 100 mg.100 mg

38% of 160 products listing panax ginseng give more (median 100 mg).

Fenugreek100 mgFenugreek in Testo Fuel against 628 products100 mg per serving; the middle half of products list 100 mg to 600 mg, the median 300 mg.100 mg

74% of 628 products listing fenugreek give more (median 300 mg).

Oyster extract100 mgOyster in Testo Fuel against 48 products100 mg per serving; the middle half of products list 35 mg to 500 mg, the median 100 mg.100 mg

48% of 48 products listing oyster give more (median 100 mg).

Source: NIH ODS Dietary Supplement Label Database, label 206283 (entered August 23, 2019), 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:

  • At 1 serving a day, the most its directions give, the label lists 125 mcg (5,000 IU) of vitamin D, 1.3 times the adult Tolerable Upper Intake Level.
  • 92% of the 4,607 products that print an amount of vitamin K list more than its 18 mcg of vitamin K (median 80 mcg).

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 Testo Fuel'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
Directions: Take one capsule four times per day with a meal or snack. For optimum results, take daily and consistently.
Warnings
Warnings: Do not exceed stated dose. For adults only.
Consult your doctor if you have any medical conditions or are taking any medications or remedies.
Keep out of reach of children.
Storage
Store in a cool place.

Source: label statements in DSLD label 206283.

What else is on the label?

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

How many labels does Testo Fuel have?

One label is on file, entered on August 23, 2019.

  1. Label 206283 (current) Entered August 23, 2019 · on the market · 120 capsules

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

Who makes it?

The label names Roar Ambition Ltd (manufacturer), London, WC1N 3AX, United Kingdom. All Testo Fuel products.

Where next?