Booster XT › The formula
The label, read out loud
What is inside Booster XT
Booster XT contains a 570 mg proprietary blend of L-citrulline, L-carnitine, pine bark extract, velvet bean, maca root, grape skin extract and saffron, plus 11 mg of zinc and 20 mg of vitamin B3, in one capsule taken once a day.
The blend total is published. The milligrams of each botanical inside it are not, and this page says so instead of guessing. Zinc and vitamin B3 are the two amounts you can check line by line against the daily value.
Supplement Facts
This is the panel as printed on a Booster XT bottle. Nothing has been added to it and nothing has been rounded.
Supplement Facts
Serving Size: 1 Capsule
Servings Per Container: 30
L-Citrulline, L-Carnitine, Pine Bark Extract (Pinus pinaster, bark), Velvet Bean (Mucuna pruriens, seed) Extract, Maca (Lepidium meyenii, root) Extract, Grape Skin Extract (Vitis vinifera), Saffron (Crocus sativus, stigma) Extract
† Daily Value not established. Percent Daily Values are based on a 2,000 calorie diet.
Other ingredients: the manufacturer does not publish the capsule shell and excipient list online. It is printed on the bottle you receive, and our support line will read it to you before you order if you have an allergy to check.
Reading the panel honestly
Three things are worth pointing out about this label, and two of them are not flattering.
The good part. Zinc and vitamin B3 are itemised with real amounts and real daily values. Zinc at 11 mg is exactly the adult male daily value, not a dusting. [5] Vitamin B3 at 20 mg is 125 percent of the daily value, again a working amount rather than label decoration. [6]
The limitation. The seven botanicals share one number: 570 mg. Under US labelling rules a proprietary blend may be declared as a total with the ingredients listed in descending order by weight, which is what has been done here. So we know L-citrulline is the largest botanical in the capsule and saffron the smallest, but not by how much.
What we refuse to do. Fill that gap. It would be easy to publish a table with plausible milligrams next to each botanical and no reader would ever check. Those numbers do not exist in any document we hold, so they do not appear on this site.
If per-ingredient transparency is the deciding factor for you, that is a fair reason to buy something else, and we would rather you hear it here than find out later.
Pillar one
Circulation: L-citrulline, pine bark and grape skin
The circulation half of Booster XT is where the formula is on firmest ground. L-citrulline is an amino acid the kidneys convert into arginine, which the body then uses to make nitric oxide. Nitric oxide is the molecule that signals the smooth muscle in blood vessel walls to relax, which widens the vessel and lets more blood through. [1] Taken orally, citrulline raises plasma arginine more reliably than arginine itself does, which is why it, rather than arginine, leads the blend.
Pine bark extract works the same territory from a different angle. It is a source of procyanidins studied for endothelial function, and it appears in a good deal of the research on circulation support in men. [2] Grape skin extract sits in the blend as a polyphenol companion to it. Neither is a stimulant and neither raises heart rate; the mechanism is about vessel behaviour, not about pushing the heart harder.
In practical terms this is the fastest-moving part of Booster XT. Men who report a change inside the first two weeks are almost always describing this pillar. It is also the part most affected by the rest of your life: hydration, sleep and blood pressure all sit on the same circuit, and no capsule outruns four hours of sleep a night.
Pillar two
Drive: maca root and velvet bean
Maca root is the libido ingredient of the formula and has the longest traditional record. It grows at altitude in Peru and has been used for centuries as a food before it was ever a supplement. The research on it centres on desire rather than on erectile mechanics, and it is generally run over eight to twelve weeks. [3] That timeline matters: maca is not a same-evening ingredient and nobody should sell it as one.
Velvet bean, listed on the panel as Mucuna pruriens, is the natural source of L-dopa, the direct precursor the body uses to make dopamine. [4] Dopamine is the chemistry of wanting rather than of performing, which is why this ingredient tends to show up in formulas aimed at men whose problem is interest rather than plumbing. Saffron extract closes the pillar on the mood side.
This is the slower half of Booster XT and the reason the product is sold in multi-month packages. A two bottle order tells you whether pillar one is working for you. Judging pillar two properly takes closer to three.
Pillar three
The nutrient floor: zinc and vitamin B3
Zinc has an established role in normal testosterone levels, normal fertility and normal immune function, and it is one of the more commonly low minerals in men who train hard or eat poorly. [5] Booster XT delivers 11 mg as zinc oxide, which is 100 percent of the adult daily value. It will not push a man with normal zinc status above normal, and it is not supposed to; it removes a floor problem rather than creating a ceiling effect.
Vitamin B3 at 20 mg contributes to normal energy metabolism and to normal function of the nervous system. [6] At this amount flushing is uncommon but not impossible in men sensitive to niacin, especially on an empty stomach, which is one more reason the daily capsule is best taken with food.
The general background on how dietary supplements are regulated and what the daily value figures mean is worth reading once if this is your first supplement. [7] [9]
What Booster XT does not claim
Booster XT is a dietary supplement. It is not a treatment for erectile dysfunction, it does not replace a prescription, and it will not fix a problem whose cause is vascular disease, diabetes, a hormone disorder or a medication side effect. Those are questions for a doctor, and persistent erectile difficulty is worth raising with one because it is sometimes the first visible sign of a cardiovascular problem that has nothing to do with the bedroom.
What Booster XT is built to do is support circulation, stamina and libido in men whose plumbing works but has lost a step. That is a narrower promise than most of this category makes, and it is the one we are willing to put a 60-day refund behind. [8]
Glossary
- Nitric oxide
- A short-lived signalling molecule that tells blood vessel walls to relax so more blood can pass. Central to erectile physiology.
- Endothelium
- The single-cell lining of every blood vessel. It produces nitric oxide, so its condition largely decides how well vessels widen on demand.
- Proprietary blend
- A group of ingredients declared on a label as one combined weight, listed in descending order, without individual amounts. Legal in the US, and less transparent than itemised doses.
- Daily Value (DV)
- The reference intake used on US supplement labels. Zinc's adult DV is 11 mg, which is why the 11 mg in Booster XT reads as 100 percent.
- L-dopa
- The compound the body converts directly into dopamine. Velvet bean is its best known botanical source.
- Procyanidins
- The polyphenol family that gives pine bark and grape skin extracts their antioxidant and circulatory research interest.
- cGMP
- Current Good Manufacturing Practice, the FDA's set of process rules for supplement facilities. A cGMP facility is inspected on process, which is not the same as FDA approval of a product.
Questions about the formula
Label questions, answered plainly
What are the ingredients in Booster XT?
Booster XT contains L-citrulline, L-carnitine, pine bark extract, velvet bean seed extract, maca root extract, grape skin extract and saffron extract, together making up a 570 mg proprietary blend, plus 11 mg of zinc as zinc oxide and 20 mg of vitamin B3. One capsule per serving, 30 capsules per bottle.
Is Booster XT safe?
The ingredients in Booster XT are common dietary supplement components at amounts within normal supplemental use, and the capsule contains no stimulants. That said, safe for most men is not the same as safe for you. If you take nitrates, blood pressure medication, antidepressants or anything that affects dopamine, ask your doctor first, because velvet bean in particular interacts with that class.
Does Booster XT have side effects?
The reports we receive most often are mild stomach upset when the capsule is taken on an empty stomach and, rarely, a brief warm flush from the niacin. Both usually resolve by taking the capsule with food. Stop and speak to a doctor if anything more than that shows up.
Is Booster XT FDA approved?
No, and no dietary supplement is. The FDA does not approve dietary supplements before sale; it regulates them as food rather than as drugs. Booster XT is manufactured in a US facility registered with the FDA and operating under cGMP rules, which covers how it is made, not a government endorsement of what it does. These statements have not been evaluated by the Food and Drug Administration. [10]
Why does the label not show each botanical's milligrams?
Because it is declared as a proprietary blend, which US rules allow. We publish the 570 mg total and the descending order exactly as printed, and we do not publish invented splits. If you want the manufacturer's own product information, it is published here.
References
Sources used on this page
These references cover the individual ingredients and the regulatory background. They are not studies of the finished Booster XT product, and we do not claim they are.
- Citrulline research summary Examine
- Pine bark extract research summary Examine
- Maca research summary Examine
- Mucuna pruriens research summary Examine
- Zinc: Fact Sheet for Health Professionals NIH Office of Dietary Supplements
- Niacin: Fact Sheet for Health Professionals NIH Office of Dietary Supplements
- Dietary Supplements MedlinePlus, US National Library of Medicine
- Dietary and Herbal Supplements National Center for Complementary and Integrative Health
- Dietary Supplements: Background Information NIH Office of Dietary Supplements
- Dietary Supplements US Food and Drug Administration
Last updated: August 2026 · next scheduled review: February 2027
Educational note: this page explains what is on a label. It is not personal medical advice, and it does not replace a conversation with your own doctor or pharmacist.
The label above ships from Longmont, Colorado
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