NOW Foods TestoJack 100 60 Veg Capsules

What this is

NOW Foods TestoJack 100 is a dietary supplement for adult men, supplied as 60 vegetarian capsules in a white bottle with a purple cap. The Supplement Facts panel sets the serving at 2 Veg Capsules and prints 30 servings, which is where the count of 60 capsules comes from. Five items are listed on the panel: three vitamins and minerals — vitamin B-6, magnesium and zinc — and two botanical extracts, Tribulus terrestris and Eurycoma longifolia. NOW Foods places the bottle in its Botanicals/Herbs line, and the front marks it Vegetarian/Vegan.

What is in a two-capsule serving

Every number on this panel is a two-capsule number, so the amounts below are what a full serving supplies rather than what sits in a single capsule.

• Vitamin B-6 (from Pyridoxine HCl) — 3 mg, 176% of the Daily Value. Pyridoxine hydrochloride is the salt form of vitamin B-6 that supplement panels most often name. The NIH Office of Dietary Supplements fact sheet on vitamin B6 gives general background on the nutrient.
• Magnesium (elemental) — 140 mg, 33% of the Daily Value. The panel names two sources for it, magnesium aspartate and magnesium oxide, and the word elemental tells you the 140 mg is the weight of magnesium itself rather than the combined weight of the two compounds carrying it. The NIH fact sheet on magnesium covers the mineral generally.
• Zinc (elemental) — 9 mg, 82% of the Daily Value. Zinc is the one row on this panel drawing on three named sources: zinc mono-L-methionine, zinc aspartate and zinc oxide. The NIH fact sheet on zinc is the standard consumer reference.
• Tribulus terrestris Extract (Fruit/Aerial Parts) — 250 mg, min. 45% saponins. This is the largest single amount on the panel. Tribulus terrestris is a low, spreading plant of the caltrop family that grows across warm, dry ground in southern Europe, Africa and Asia; the extract here is drawn from the fruit and the aerial parts of the plant rather than the root.
• LJ100 (Eurycoma longifolia Extract) (Root) — 50 mg, min. 22% eurypeptides. Eurycoma longifolia is a slender understory tree native to Southeast Asia, known in Malaysia as tongkat ali, and this extract is taken from its root. LJ100 is identified on the panel as a registered trademark of HP Ingredients. The NIH background page on botanical dietary supplements explains how plant extracts are described on labels in general.

What the minimum percentages mean

Both botanical rows on this label commit to a floor, not an exact figure. A standardized extract is processed so that a named marker compound makes up at least a stated share of the finished extract, and the panel prints that share as a minimum with no upper figure given. Here the two floors are different compounds on different plants: a minimum of 45% saponins in the tribulus extract, and a minimum of 22% eurypeptides in the Eurycoma longifolia extract. Each percentage describes the composition of its own extract, not a share of the whole capsule.

Why three rows carry a percentage and two carry a dagger

The vitamin and mineral rows each show a % Daily Value, and the two botanical rows show a dagger in that column instead. The panel's own footnote explains the dagger in four words: "Daily Value not established." For the tribulus and Eurycoma longifolia rows the panel therefore prints the amount in milligrams and stops there, with no percentage alongside it.

Other ingredients

The panel lists four, in this order: hypromellose (cellulose capsule), microcrystalline cellulose, stearic acid (vegetable source) and silicon dioxide. Hypromellose is named on the panel as the capsule itself. The panel assigns no role to the remaining three, so neither do we.

Supplement Facts

How to take it

The label's Suggested Usage reads, in full: "Take 2 capsules daily with food as needed." Storage sits on the same face of the bottle: "Store in a cool, dry place after opening." At that usage the 30 servings printed on the panel come to a 30-day supply.

Who it's for

This is a dietary supplement for adults 18 and over, and the bottle's own caution limits it to adults. The 60-capsule size is the one-month format at the label's two-capsule serving, which makes it the straightforward choice for a first bottle or for anyone who would rather restock monthly than keep a long supply on the shelf. The Vegetarian/Vegan mark on the front will matter to buyers who check capsule materials before ordering. You can see the rest of our range in Health & Wellness, and the botanical and mineral formulas we carry alongside it in Sports Nutrition.

Good to know

The caution printed on the bottle reads: "For adults only. This product is not intended for those with a serious medical condition or pregnant/nursing women. Consult your physician if taking any medication. Keep out of reach of children." The same face adds, "Natural color variation may occur in this product."

The allergen statement on the panel reads: "Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens."

On origin, the panel prints "Manufactured for NOW FOODS, 395 S. Glen Ellyn Rd. Bloomingdale, IL 60108, USA" and, as a separate line, "Made and quality tested in the USA with globally sourced ingredients." The bottle also carries a GMP Quality Assured roundel and a Non-GMO mark. ZMA is identified on the panel as a registered trademark of SNAC System, Inc., San Carlos, CA.

Frequently Asked Questions

How many capsules are in the bottle, and how many servings is that?

The bottle holds 60 vegetarian capsules. The Supplement Facts panel sets a serving at 2 Veg Capsules and prints 30 servings, so the 60 capsules and the 30 servings describe the same bottle two ways.

Is this suitable for vegetarians and vegans?

The front of the bottle is marked Vegetarian/Vegan. Separately, the Other Ingredients line names the capsule as hypromellose, a cellulose capsule, which is the component buyers checking this usually want to see named.

What allergens does the label mention?

The panel states the product is not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients. It adds, in the same statement, that the product is produced in a GMP facility that processes other ingredients containing those allergens.

What is LJ100 on the front of the bottle?

LJ100 is the trade name of the Eurycoma longifolia root extract on this panel, supplied at 50 mg per two-capsule serving and standardized to a minimum of 22% eurypeptides. The panel identifies it as a registered trademark of HP Ingredients.

How is the order packaged for delivery?

Orders ship in plain, unbranded outer packaging. It will not show the Gear Isle name.

Product information compiled and reviewed by the Gear Isle product team. We transcribe supplement facts directly from manufacturer packaging. Found an error? Tell us.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Dietary supplement for adults 18 and over. Consult a licensed healthcare professional before use, especially if you have a medical condition, heart concerns, or take prescription medication (including nitrates). Keep out of reach of children.