Xcalibur Platinum 11000 Review: What Can You Expect From This Male Enhancement Formula?

Xcalibur Platinum 11000 Male Enhancement is a supplement for men who want to boost their sexual performance, stamina, erection, sex drive and confidence by using a blend of ingredients such as Tribulus terrestris, yohimbe, L-arginine, maca, damiana, guarana, lycopene, vitamin C, vitamin B12, vitamin D3 and zinc. It comes in individual capsules in a 24 count pack from US Royal Honey.

However, how much of each active ingredient does Xcalibur Platinum 11000 actually provide? Are yohimbe, L-arginine, maca, and Tribulus included in amounts similar to those used in clinical research? Is there any published study or clinical trial testing the complete Xcalibur Platinum 11000 formula? And how should consumers look at claims involving harder erections, greater stamina, longer intercourse, increased size, and male performance when the individual ingredient amounts are not clearly disclosed?

Let’s examine Xcalibur Platinum 11000’s formula, the scientific evidence behind its main ingredients, its marketing claims, customer feedback, and how it compares with other male performance supplements, including PeakErect® and WOWMD® Perform Max.

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Xcalibur Platinum 11000 Ingredient Analysis

Xcalibur Platinum 11000 is a blend of herbs, amino acids, vitamins and minerals plus proprietary ingredients designed to help men with their sexual performance, stamina, erections, sex drive and energy.

The product information lists the following ingredients:

• Tribulus Terrestris
• Yohimbe
• L-Arginine
• Maca
• Damiana
• Guarana
• Lycopene
• Vitamin C
• Vitamin B12
• Vitamin D3
• Zinc Oxide
• Proprietary Xcalibur Blend
• Xcalibur Enhancement Blend

The label also provides a 7,700 Proprietary Xcalibur Blend and 3,300 Xcalibur Enhancement Blend, but there is no readily available information regarding the units or the percentage of contribution of each ingredient to these blends. This complicates the direct comparison of the dose of Xcalibur Platinum 11000 with the dose administered in clinical studies.

One of the more significant ingredients is yohimbe due to its association with erectile function and sexual performance. A compound found in yohimbe, called yohimbine, has been researched for use in erectile dysfunction. Eight randomized trials were analyzed in a systematic review and meta-analysis that showed that there was a higher likelihood of improvement in erectile function with yohimbine versus placebo.^[1]

This study serves to illustrate the reasons for the inclusion of yohimbe in Xcalibur Platinum 11000, but cannot guarantee that Xcalibur Platinum 11000 will have the same effects. No known clinical trials have studied yohimbe as an ingredient in a multiple ingredient product containing an unknown dose of yohimbe.

An L-arginine is also a frequently used component of male performance supplements. Nitric oxide produced in the body by L-arginine relaxes blood vessels and promotes circulation. Hence, it has been investigated for erectile function.

However, Xcalibur Platinum 11000 does not specifically state the amount of each specific L-arginine in the product. If it doesn’t, we don’t know if it gives an equivalent amount, as in human studies.

Tribulus terrestris is found in many male health products as a supplement for testosterone, libido and sexual function. Ten studies with 483 participants were included in a 2025 systematic review.^[2] A few results concerning erectile function were presented but in 8 of 10 studies, no significant difference was observed in androgen levels. Thus, the evidence is inconclusive and not sufficient to confirm that Tribulus is a successful testosterone booster.

Maca is another eponymous component of sexual health supplements. In a PubMed study four randomized clinical trials were identified with some positive results regarding sexual function and/or sexual desire, but the evidence was still limited.^[3] Usual dosage of studies was 1.5 to 3.5 grams of maca per day.

It is difficult to directly compare Xcalibur to these studies as the amount of maca provided is not clearly stated.

Guarana is a natural source of caffeine used for a natural energy and alertness supplement. Traditional uses of damiana include libido and sexual wellness; there is limited human evidence that supports its sexual performance benefits.

Xcalibur Platinum 11000 thus includes a few components that are connected with research and/or conventional use, relating to male function, circulation, libido, energy, as well as male wellness. The strength of evidence, however, differs among ingredients.

The main concern is, dose transparency. With no individual dose information, it’s hard to know if Xcalibur Platinum 11000 offers the same dosage as clinical studies have found.

Also, we were unable to find a published human clinical trial for the full Xcalibur Platinum 11000 formula. The potential effects would be much easier to evaluate with clearer indication of amounts of ingredients and of finished products.

Scientific Evidence

There is an important difference between research on Xcalibur Platinum 11000 and research on the ingredients inside Xcalibur Platinum 11000.

We found research involving yohimbine, L-arginine, maca, and Tribulus. What we did not identify was a published human clinical trial testing Xcalibur Platinum 11000 as a complete product.

That means most of the scientific case for the product comes from its individual ingredients.

Results from an ingredient study cannot automatically be transferred to a supplement containing that ingredient.

Several details can change the outcome, including:

• Ingredient amount
• Type of extract
• Extract standardization
• Length of use
• Combination with other ingredients
• Age and health of the person taking it
• Medication use
• Diet, exercise, sleep, and lifestyle

Research on yohimbine has reported some positive findings involving erectile function, but measured doses of yohimbine cannot be directly compared with an unclear amount of yohimbe in Xcalibur.^[1]

L-arginine has been studied for nitric oxide production and erectile function, while research on maca suggests some potential for sexual desire and function, although the evidence remains limited.^[3]

Tribulus has also been studied in men, but a 2025 systematic review found no robust evidence that it reliably increases testosterone.^[2]

Xcalibur’s main weakness here is dose transparency. Without clear individual amounts, we cannot meaningfully compare the formula with doses used in published studies.

Marketing Claims That Need More Context

“Rock Hard Erections”

Erection support is one of the main claims used to promote Xcalibur Platinum 11000.

The formula contains yohimbe and L-arginine, two ingredients commonly found in male performance supplements.

Yohimbine has been researched for erectile dysfunction, while L-arginine is involved in nitric oxide production and has been studied for blood flow and erectile function. However, their presence does not establish that Xcalibur Platinum 11000 itself will produce harder erections.

The available information does not clearly disclose the individual amounts of these ingredients, and we did not identify a published clinical trial testing the complete formula for erectile function.

Erection quality can also depend on cardiovascular health, medications, stress, hormones, diabetes, smoking, alcohol use, and general health. Harder erections should therefore not be considered a guaranteed result.

“Stamina and Sex Drive”

Xcalibur Platinum 11000 is also marketed around stamina and sex drive.

Maca has some research involving sexual desire and sexual function, while yohimbe, Tribulus, damiana, and guarana are commonly included in products aimed at sexual wellness, energy, and performance.

However, these ingredients have different purposes and different levels of supporting evidence. Guarana contains caffeine and may increase alertness or stimulation, but feeling more alert does not necessarily mean greater sexual stamina.

We also did not identify a published clinical trial testing Xcalibur Platinum 11000 for stamina or libido.

Sex drive can vary with sleep, stress, relationships, medications, hormone levels, age, and health. Stamina and libido are better viewed as intended areas of support rather than predictable effects.

“Increase the Time of Intercourse”

The product is promoted with claims involving longer intercourse and ejaculation control.

This is a specific outcome that would require direct clinical evidence on the finished product.

We did not identify a published human clinical trial showing that Xcalibur Platinum 11000 reliably increases intercourse duration or delays ejaculation.

Some ingredients may have research involving circulation, sexual wellness, or energy, but these effects do not automatically translate into greater ejaculation control.

This claim therefore requires finished-product research before it can be considered an established benefit.

“Increase in Length, Width and Thickness”

Xcalibur Platinum 11000 also carries claims involving increased penile length, width, and thickness.

Better circulation may contribute to erection firmness and temporary fullness during sexual activity, but this is different from permanently changing anatomical penis size.

We did not identify clinical evidence showing that Xcalibur Platinum 11000 permanently increases penile length, width, or thickness.

The presence of ingredients associated with circulation or erectile function does not establish permanent enlargement.

These size-related claims should therefore not be considered proven outcomes of the supplement.

“Sexual Confidence”

Sexual confidence is another theme surrounding Xcalibur Platinum 11000.

Someone who has a satisfying sexual experience may feel more confident, but confidence is personal and difficult to predict from a supplement formula.

The available information does not show that the complete product has been clinically tested using a validated measure of sexual confidence.

Confidence can also depend on relationship factors, stress, sexual health, expectations, and previous experiences.

For this reason, improved sexual confidence is better viewed as a possible personal experience rather than a guaranteed effect.

“Maximum Potency”

The US Royal Honey listing describes Xcalibur Platinum 11000 as providing maximum potency, with individually sealed packets intended to maintain freshness.

Individual packaging may help protect the capsules from moisture and environmental exposure before use, but packaging alone does not establish the potency or effectiveness of the formula.

Potency depends on factors such as ingredient amounts, extract standardization, manufacturing quality, stability, and formulation.

The available information does not provide a clinical study showing that the sealed format produces stronger male-performance effects.

“Maximum potency” is therefore better understood as a marketing and packaging description rather than evidence of greater effectiveness.

Our Verdict on the Marketing Claims

Xcalibur Platinum 11000 contains several ingredients that fit within a male enhancement and sexual performance formula. Yohimbine has been studied for erectile dysfunction, L-arginine for nitric oxide production and erectile function, maca for sexual desire and sexual function, and Tribulus for erectile function and testosterone.

But the studies conducted on these individual ingredients do not guarantee that Xcalibur Platinum 11000 will be as effective. We did not identify a published clinical trial testing the complete Xcalibur Platinum 11000 formula.

Another limitation is dose transparency. The product uses proprietary blends, but the individual amounts of yohimbe, L-arginine, maca, Tribulus, and other key ingredients are not clearly disclosed.

These are areas of support, not effects, and claims of harder erections, more stamina, more sex drive, longer sexual intercourse and sexual confidence should be regarded in this light. If the man claims that the penis has grown in size permanently, then there should be more supporting evidence.

More precisely, Xcalibur Platinum 11000 is a male enhancement supplement with various ingredients, each having been studied independently for its effects on erectile capabilities, circulation, libido, and sexual wellness. Better information regarding the dose and completed clinical trials of finished products would facilitate its marketing claims.

Xcalibur Platinum 11000 Vs. Popular Male Performance Supplements

PeakErect®

PeakErect® takes a broader daily-support approach with 15 active ingredients, including 250 mg of L-Arginine, 400 mg of Longjack, and 250 mg of Maca Root. Its formula is built around male vitality, circulation, stamina, energy, recovery, and confidence.

Xcalibur Platinum 11000 also contains L-arginine and maca, along with yohimbe, Tribulus, damiana, guarana, lycopene, vitamins, zinc, and proprietary blends.

The main difference is how the formulas are presented.

PeakErect® provides specific amounts for several of its highlighted ingredients. Xcalibur uses large proprietary blends and does not provide enough clear information to determine exactly how many of several important ingredients users receive.

Xcalibur is also positioned more strongly as an occasional sexual-performance product, while PeakErect® takes a broader male wellness approach.

For consumers comparing ingredients with published research, clearly disclosed amounts make that process easier.

Winner: PeakErect®

WOWMD® Perform Max

WOWMD® Perform Max contains L-Arginine, Zinc, Maca Root, and Longjack and is designed around stamina, daily energy, circulation support, confidence, and overall men’s wellness. It is taken as two tablets daily, preferably 20–30 minutes before a meal, and is positioned as a steady-use formula for active men.

WOWMD® Perform Max takes a more targeted approach compared with Xcalibur Platinum 11000. Xcalibur contains L-arginine, maca, Tribulus, yohimbe, guarana, damiana, zinc, vitamins, and proprietary blends, while WOWMD® focuses on circulation, stamina, energy, and male vitality.

Another important difference is formula transparency. Xcalibur’s proprietary blends make the individual amounts of several important ingredients difficult to determine. WOWMD® provides clearer information for assessing its highlighted ingredients.

Xcalibur’s inclusion of yohimbe and guarana also deserves additional consideration, particularly for people who are sensitive to stimulants or take medications.

For consumers who prefer clearer formula information and a defined daily wellness approach, WOWMD® Perform Max provides more straightforward information for evaluating its formula.

Winner: WOWMD® Perform Max

Pros and Cons of Xcalibur Platinum 11000

• Contains several familiar ingredients used in male performance supplements
• Includes L-arginine, maca, Tribulus, yohimbe, damiana, and guarana
• Contains ingredients researched in areas related to erectile function, circulation, sexual desire, energy, and male wellness
• Yohimbine has human research involving erectile dysfunction
• L-arginine has been studied for nitric oxide production and erectile function
• Comes in individually sealed packets for convenient use

• The individual amounts of several key ingredients are not clearly disclosed
• Proprietary blends make direct comparison with clinical study doses difficult
• No published human clinical trial on the complete Xcalibur Platinum 11000 formula was identified
• Research behind individual ingredients does not prove the finished supplement will produce the same results
• Claims involving permanent increases in penile size lack supporting finished-product evidence
• Claims involving longer intercourse and ejaculation control need stronger clinical evidence
• Evidence for Tribulus as a reliable testosterone booster is not convincing
• Research on maca for sexual function remains limited
• Yohimbe may cause side effects and interact with certain medications
• Guarana may add stimulant effects because of its caffeine content
• Customer feedback is based on only two visible reviews
• The stated 99 percent customer satisfaction rate is not explained by the visible review data

Final Verdict

Xcalibur Platinum 11000 is a male enhancement formula that features yohimbe, L-arginine, Tribulus terrestris, maca, damiana and guarana. Some of these components have been researched for their effects on sexual function, blood flow, libido, vitality, and overall male health.

The ingredient list gives Xcalibur Platinum 11000 some research background, but there is much less evidence available for the finished product itself.

Its biggest drawback is dose transparency. The product uses proprietary blends, while the individual amounts of several important ingredients are not clearly disclosed. This makes it difficult to compare Xcalibur with doses used in published studies.

We also did not identify a published human clinical trial testing the complete Xcalibur Platinum 11000 formula.

Customer feedback is limited. The retailer page reviewed shows a 3.5 out of 5 rating based on only two reviews, which is not enough to establish consistent results.

Xcalibur Platinum 11000 might be a choice for men seeking a single, convenient sexual wellness supplement containing a few familiar sexual wellness components occasionally.

But more specific amounts of ingredients, as well as independent testing information and clinical studies of the complete formula would help to better assess the effectiveness and safety of this product.