Maxentra Ingredients & Doses: All 12 Actives Evaluated
An exhaustive, milligram-by-milligram clinical deconstruction of the official Maxentra® Supplement Facts label. We examine what is printed, verify the 3 disclosed compounds, calculate realistic ranges for the 9 proprietary botanicals, and grade every active against published human trials.
Supplement Facts
| Active Ingredient | Form / Source | Amount Per Serving | % Daily Value |
|---|---|---|---|
| Zinc (as Zinc Aspartate / Gluconate Chelate) | Essential Trace Mineral | 15 mg | 136% |
| BioPerine® (Piper nigrum extract, std. 95% piperine) | Black Pepper Fruit Extract | 5 mg | ** |
| L-Arginine (USP Pharmaceutical Grade) | Semi-Essential Amino Acid | 250 mg | ** |
|
Maxentra® Proprietary Vitality Complex (Total: 650 mg**) Individual milligram quantities within this 650 mg blend are kept proprietary by the manufacturer. |
|||
| • Tongkat Ali Extract | Eurycoma longifolia root (100:1 concentrated extract) | Undisclosed proprietary blend amount | ** |
| • Maca Root Extract | Lepidium meyenii (Andean mountain root 4:1) | Undisclosed proprietary blend amount | ** |
| • Horny Goat Weed Extract | Epimedium sagittatum (standardized 10% icariin) | Undisclosed proprietary blend amount | ** |
| • Panax Ginseng Root Extract | Korean Red Ginseng (standardized 80% ginsenosides) | Undisclosed proprietary blend amount | ** |
| • Tribulus Terrestris Extract | Tribulus terrestris fruit (std. 45% saponins / protodioscin) | Undisclosed proprietary blend amount | ** |
| • Saw Palmetto Fruit Extract | Serenoa repens berry (std. fatty acids and sterols) | Undisclosed proprietary blend amount | ** |
| • Muira Puama Bark Extract | Ptychopetalum olacoides bark ("Potency Wood") | Undisclosed proprietary blend amount | ** |
| • Catuaba Bark Extract | Trichilia catigua bark (active catuabine alkaloids) | Undisclosed proprietary blend amount | ** |
| • L-Citrulline | Pure Fermented L-Citrulline | Undisclosed proprietary blend amount | ** |
Other Ingredients: Hypromellose (vegetable capsule shell), magnesium stearate (vegetable grade), microcrystalline cellulose, silicon dioxide.
Formula Verification: Lot 2026-US-89B · Independent identity and heavy metal tested.
The Disclosed Actives: Verifying What Is Stated in Milligrams
The Maxentra label provides transparent milligram amounts for three critical baseline constituents: Zinc (15 mg), BioPerine® (5 mg), and L-Arginine (250 mg). This transparency provides an immediate benchmark that separates it from lower-tier supplements that hide 100% of their ingredients behind opaque trade names.
1. Zinc (15 mg · 136% DV): Zinc is an essential catalytic trace element required for the synthesis of luteinizing hormone (LH), which signals the Leydig cells in the testes to manufacture testosterone. Zinc also plays a pivotal structural role in maintaining the integrity of the vascular endothelium. Controlled human studies (Prasad et al., Nutrition) demonstrate that moderate zinc supplementation in marginally deficient adult men significantly elevates circulating serum testosterone into optimal physiological ranges within 8 to 12 weeks. At 15 mg, Maxentra provides a safe, highly bioavailable chelated dose that comfortably exceeds baseline daily requirements without risking copper depletion or gastric irritation.
2. BioPerine® (5 mg): Standardized to contain at least 95% piperine, BioPerine is a patented black pepper extract backed by robust clinical pharmacokinetic trials. Piperine inhibits intestinal P-glycoprotein and hepatic glucuronidation enzymes, which typically break down and eliminate botanical polyphenols before they reach systemic circulation. Clinical evaluations indicate that co-administering 5 mg of BioPerine enhances the bioavailability and serum absorption of companion herbs and amino acids by 30% to 200%, significantly multiplying the metabolic efficiency of the entire capsule.
3. L-Arginine (250 mg): L-Arginine is the immediate physiological substrate used by endothelial nitric oxide synthase (eNOS) to manufacture nitric oxide (NO). Nitric oxide acts as a primary signaling molecule that diffuses into vascular smooth muscle cells, stimulating soluble guanylyl cyclase to generate cyclic guanosine monophosphate (cGMP). This enzymatic cascade triggers smooth muscle relaxation, arterial vasodilation, and increased pelvic blood flow. While standalone clinical trials for acute vasodilation frequently study 1,500 mg to 3,000 mg of L-Arginine, Maxentra includes 250 mg alongside L-Citrulline and BioPerine to prime daily vascular responsiveness without inducing gastrointestinal distress.
The 650 mg Proprietary Blend: Calculating Realistic Milligram Ranges
The remaining nine active ingredients are bundled within the 650 mg Maxentra® Proprietary Vitality Complex. Under United States dietary supplement labeling laws (21 CFR 101.36), manufacturers are legally permitted to group proprietary mixtures under a single cumulative weight, listing ingredients in descending order of predominance by weight.
Because the total blend weighs 650 mg across nine botanical components, simple arithmetic dictates that the average weight per botanical is approximately 72 mg. However, because ingredients are listed in descending order, the realistic distribution estimates:
- Tongkat Ali Root Extract (100:1): Estimated 120 mg – 150 mg. Because this is a 100:1 concentrated extract, 120 mg delivers the dry botanical equivalence of 12,000 mg of raw root, which comfortably matches human trial ranges.
- Maca Root Extract (4:1): Estimated 100 mg – 120 mg (equivalent to 400 mg – 480 mg of raw root).
- Horny Goat Weed (std. 10% icariin): Estimated 80 mg – 100 mg, supplying 8 mg – 10 mg of active icariin for targeted PDE5 enzyme modulation.
- Korean Panax Ginseng (std. 80% ginsenosides): Estimated 60 mg – 80 mg of high-potency standardized extract.
- Tribulus Terrestris, Saw Palmetto, Muira Puama, Catuaba & L-Citrulline: Estimated 30 mg – 50 mg each, acting as supportive botanical and amino acid co-factors.
Three Ingredients We Would Discount, and Why
A truly honest clinical ledger does not praise every component equally. While Maxentra contains a solid core, there are three ingredients whose presence should be evaluated with pragmatic realism:
1. Tribulus Terrestris: While heavily marketed in bodybuilding and male enhancement lore as a "testosterone booster," rigorous double-blind human RCTs have repeatedly refuted claims that Tribulus elevates serum testosterone beyond normal baseline levels. Its real clinical utility lies solely in modest subjective improvements in physical drive, erectile confidence, and mild nitric-oxide mediated smooth muscle responsiveness. Buyers should not expect anabolic steroid-like hormonal spikes.
2. Muira Puama Bark Extract: Although Muira Puama enjoys a centuries-old Amazonian reputation as "potency wood," modern human clinical trial literature remains sparse. Most published evaluations involve multi-herb proprietary blends rather than isolated, placebo-controlled trials. It provides mild parasympathetic tonic support, but its standalone efficacy is less scientifically validated than Tongkat Ali or Zinc.
3. L-Citrulline at Trace Amounts: While L-Citrulline is biologically superior to L-Arginine for sustained nitric oxide production, sports nutrition studies typically administer 3,000 mg to 6,000 mg of citrulline malate. Sitting near the end of a 650 mg proprietary blend, the citrulline dose in Maxentra cannot exceed 30 mg to 50 mg. At this concentration, it acts merely as an auxiliary metabolic cofactor rather than a standalone therapeutic nitric oxide donor.
Interactions Worth Clearing With Your Doctor First
Because Maxentra actively engages systemic nitric oxide and smooth muscle vasodilation pathways, it is not appropriate for everyone. Certain drug interactions demand pre-clearance from a licensed healthcare provider:
Medical Clearance Advisory
- Prescription Nitrates (Nitroglycerin, Isosorbide): Combining nitric oxide donors like L-Arginine and PDE5-modulating icariin with prescription heart nitrates can cause dangerous, precipitous drops in systemic blood pressure (hypotension).
- Antihypertensive Medications: Men taking beta-blockers, ACE inhibitors, or calcium channel blockers should monitor their blood pressure closely, as botanical vasodilators may exert additive hypotensive effects.
- Prescription PDE5 Inhibitors (Sildenafil, Tadalafil): Taking Maxentra simultaneously with high-dose pharmaceutical erectile medications may lead to unexpected dizziness, facial flushing, or lightheadedness.