The Maxentra bottle label. Serving size: 1 capsule. Servings per container: 30.
The formula at a glance
Maxentra is built on two families of ingredients. The first is a nitric-oxide group of 400 mg of arginine (two forms) and 200 mg of citrulline (two forms). The second is a small support group of beta alanine, niacin and calcium. Together they reflect the product’s “Men’s Performance Support” positioning: circulation first, with endurance and energy metabolism in support.*
L-Arginine (base)200 mg
What it is: Arginine is a conditionally essential amino acid and the direct substrate for nitric oxide synthase, the enzyme that makes nitric oxide in blood-vessel linings.
Why it may be included: It is included as the core of Maxentra’s blood-flow positioning, supporting normal circulation that reaches muscles and tissues.*
Safety: Can interact with nitrates, ED medicines and blood pressure medicine. Large doses may upset the stomach.
L-Arginine AKG (2:1)200 mg
What it is: Arginine alpha-ketoglutarate binds arginine to AKG, a compound involved in the body’s energy cycle. It is a popular sports-nutrition form.
Why it may be included: A second arginine form adds to the total arginine per capsule and is commonly used in workout and performance formulas.*
Safety: Same cautions as L-arginine.
L-Citrulline HCl100 mg
What it is: Citrulline is an amino acid found in watermelon. The body converts it into arginine, mainly in the kidneys.
Why it may be included: Because it avoids some of the breakdown arginine faces in the gut, citrulline is included to help maintain arginine levels over time.*
Safety: Generally well tolerated; consult a doctor if you use nitrates or BP medicine.
L-Citrulline Malate100 mg
What it is: Citrulline bonded to malic acid, a compound that takes part in cellular energy production.
Why it may be included: Common in endurance products and paired here with citrulline HCl to round out the citrulline content.*
Safety: Generally well tolerated.
Beta Alanine40 mg
What it is: A non-essential amino acid the body combines with histidine to build carnosine in muscle tissue.
Why it may be included: Carnosine helps buffer acid during intense effort, so beta alanine is linked with muscular endurance and stamina.*
Safety: Higher doses can cause harmless tingling (paresthesia); 40 mg is well below that range.
Niacin (vitamin B3)7.5 mg NE (47% DV)
What it is: An essential B vitamin needed to turn food into usable energy.
Why it may be included: Supports normal energy metabolism and helps the formula sit within an everyday-energy routine.*
Safety: Some people notice a brief warm flush. Do not stack with other high-niacin products without advice.
Calcium (as calcium carbonate)18 mg (1.5% DV)
What it is: An essential mineral for bones, muscle contraction and nerve signalling.
Why it may be included: A small supporting amount for normal muscle function.*
Safety: Very low dose; no special caution at this level.
Other ingredients
Hypromellose is a plant-based cellulose used to make the vegetable capsule. Vegetable stearate and silicon dioxide are flow agents that keep powder moving evenly during encapsulation. None of these is an active ingredient.
How to take it
Per the label: take one capsule daily with an 8 oz glass of water. For best results, take it 20 to 30 minutes before a meal with 8 oz of water, or as directed by your healthcare professional. Do not exceed the recommended dose. Store in a cool, dry place away from heat and light.
Label caution
The label warns that pregnant or nursing mothers, children under 18 and individuals with a known medical condition should consult a physician before using this or any dietary supplement. Keep out of reach of children, and do not use if the safety seal is damaged or missing.
Source conflict
Source conflict, explained. The printed bottle label (shown above) lists the seven ingredients on this page. A separate brand infographic titled “What’s inside Maxentra?” shows a herbal list instead: Tongkat Ali, maca root, Panax ginseng, Tribulus terrestris, horny goat weed, stinging nettle, black pepper extract and zinc, without amounts. At least one third-party page reports yet another herbal list.
We do not merge these into one invented formula. We use the bottle’s Supplement Facts panel as the most reliable source, and we recommend checking the label on the bottle you receive before use.
The brand infographic with a herbal ingredient list that does not match the Supplement Facts panel. Shown for transparency.
Ingredient questions
Does Maxentra use a proprietary blend?
No. The Supplement Facts panel prints an individual amount for every active ingredient, from 200 mg of L-arginine down to 18 mg of calcium.
Is there caffeine in Maxentra?
No caffeine is listed on the Maxentra label. The actives are amino acids, niacin and calcium.
Which list of ingredients is correct?
We follow the printed bottle label. A brand infographic shows a herbal list, which conflicts with the label, so check the bottle you receive.