The 5 Best-Selling Natural Testosterone Supplements of 2025 – Pros and Cons of Each
Dr. Robert Wallace
Urologist with over 20 years of experience specializing in treatments for erectile dysfunction.
In this guide, I will present the top 5 erectile dysfunction supplements that men in the U.S. are using in 2025. My recommendations are based on strict criteria: scientifically proven ingredients, real user results, and a clear focus on effectiveness and value.
How to Differentiate a High-Quality Testosterone Booster from a Weak One
Studies show that over 60% of men over 40 and nearly 80% of men over 60 experience a decline in testosterone levels, impacting energy, strength, and vitality. This decline has led to a growing demand for testosterone support supplements.
However, not all products on the market are created equal. With rising demand, some brands release supplements with minimal active ingredients or unproven benefits, leading consumers to make choices based on exaggerated promises.
Our team analyzed the most popular testosterone boosters, assessing their safety, quality, and effectiveness. After thorough analysis, we identified the brands that truly deliver on their promises and those that don’t. We conducted tests with our patients, and here’s what you need to know to make an informed choice and invest in what truly works.
How we evaluate the products
Active Ingredients: I checked whether the ingredients are clinically proven and safe for use.
Effectiveness: I analyzed results from real users and scientific studies.
Cost-Effectiveness: I compared the prices and benefits offered by each supplement.
Guarantees: I checked if the manufacturer offers a money-back guarantee.
Scientific Updates: I prioritized products that incorporate the latest scientific discoveries into their formulas. Science is constantly evolving, and it is crucial to choose supplements based on the most up-to-date research.
Real-World Testing on Patients: We conducted practical tests with real patients to assess the effectiveness of each supplement. Based on concrete results and direct observations, we ensure that each product delivers the promised impact safely and effectively.
Warning Signs of Potential Scams
Lack of Clinical Studies: Be cautious of companies that highlight the clinical efficacy of individual ingredients in a product instead of assessing the efficacy of the product as a whole. The highest indicator of quality in a supplement is the completion of a placebo-controlled clinical study for safety and efficacy by an independent third party. This is especially important when evaluating supplement claims, as participants can be assessed for measurable improvements in performance, such as in standardized cognitive tests. You expect the same high standards of research and testing before trusting a medication, so why not apply the same rigor when trusting a supplement?
Unproven Ingredients: There are very few natural ingredients that are both effective and safe for treating erectile dysfunction. Many products on the market include herbs and compounds that promise to enhance performance, but often lack clinical evidence to back up their claims. Be wary of erectile dysfunction supplements that list a wide range of ingredients just to create the illusion of comprehensive support. More ingredients don’t always mean better for your health. Some of the supplements we reviewed contained over 10 ingredients, but the real question is: are they all truly necessary?
Prolong Power: A Name That’s Being Talked About in 2025, But Is It Really All That?
Among the five best-selling erectile dysfunction supplements in the US in 2025—Prolong Power, Boostaro, Alpha Bites, Alpha Force, and Iron Pump—Prolong Power clearly leads Google searches. Therefore, we began clinical trials with our own patients. Despite its popularity, the results were less consistent than expected: some patients reported slight improvement, while others experienced side effects such as heartburn, mild headaches, and increased blood pressure.
Next, we evaluated Boostaro — and the results were superior. Patients reported a noticeable improvement in erection strength and duration, a gradual increase in libido, and virtually no adverse effects. Its cleaner, more balanced formula may explain this difference. Of course, every body reacts differently — but clinical data so far suggests that Boostaro offers a more effective, stable, and safer option.
Top 5 Testosterone Boosting Supplements in 2025
After analyzing the 5 best-selling erectile dysfunction supplements in the U.S. in recent months , we were initially impressed by the popularity and bold promises of each one. But only clinical testing could reveal what truly works.
We started with Prolong Power, the clear leader in online searches. Its appeal lies in its formula designed for rapid vasodilation, and some patients reported firmer erections within the first few weeks. However, we also observed a relatively high frequency of side effects, such as heartburn, headaches, and increased blood pressure, which reduced its overall safety and tolerability score.
Next came Boostaro, which stood out from the beginning. All listed ingredients were confirmed to be present and active according to our lab analysis. In clinical tests, it consistently improved blood flow and sexual performance, with added benefits like increased energy and stamina. Most importantly, there were no reports of common side effects like elevated blood pressure or headaches — a key advantage.
Alpha Bites surprised us with its presentation: a gummy supplement, ideal for those who dislike capsules. It includes several interesting ingredients for hormonal support, but the dosage of key actives was lower than ideal, which may limit long-term results.
Alpha Force showed solid levels of L-arginine and other compounds aimed at improving blood vessel dilation. Some patients reported better performance in the first few weeks, but the effects seemed to taper off after 30 days of continuous use — suggesting possible adaptation by the body.
Finally, Iron Pump received positive initial feedback on boosting energy and overall vitality. Its formula seems tailored for men who are physically active. However, some patients reported mild insomnia and increased restlessness during the first few weeks, likely due to the stimulant-heavy nature of certain ingredients.
Remember, we’re not here to recommend or criticize one product or another; we simply conduct thorough evaluations to help you understand the best choice.
Based on all clinical tests and evaluations, Boostaro stood out as the most balanced option in terms of efficacy, safety, and additional health benefits. Below, we present our final ranking, along with a detailed analysis of each product—starting with our top pick and explaining exactly why.
#1 BOOSTARO
4.8 / 5
TOTAL RANKING
A+
Overall Grade
Pros
- Contains must-have ingredients to optimize testosterone levels and enhance sexual performance.
- Molecular formula similar to others on the market without the side effects.
- Vegan, non-GMO, and gluten-free
- Made in the USA in an FDA Approved facility.
- After 40 days of daily use, study participants reported surprising results, including increased testosterone levels, size, and performance.
- Laboratory tests reveal 100% pure ingredients with no binders or fillers.
- 60-day money-back guarantee
Cons
- Available online in the United States, but not currently sold in retail stores
- limited stock
Final Result
We gave Boostaro our number 1 ranking because it is the only erectile dysfunction supplement that meets all of our strict criteria, providing real and sustainable results in treating erectile dysfunction at its root cause. In just 40 days, participants in our study reported impressive results. Boostaro quickly earned top user reviews for boosting energy and improving sexual performance, securing its place as one of the top solutions for erectile dysfunction (ED). So, what makes Boostaro different? It directly targets the root cause of ED: the accumulation of toxins in the interstitial cells of the testes, which are crucial for testosterone production. These toxins — often from processed foods, pesticides, and plastics — interfere with testosterone levels and damage the blood vessels responsible for penile blood flow, leading to weak erections and low libido. Research shows that by removing these toxins, you can restore healthy testosterone levels and improve blood flow, offering a real and lasting solution for erectile dysfunction.
Boostaro features a powerful and completely natural formula that includes:
- Maca root, known for balancing hormones and boosting libido.
- Beetroot powder, which helps in nitric oxide production and promotes healthy blood flow, leading to firmer and longer-lasting erections.
- Catuaba, a natural aphrodisiac with stimulating properties.
- Tribulus terrestris, traditionally used to increase testosterone and improve sexual desire.
- Epimedium, known for enhancing sexual performance and reducing fatigue.
With proven. results and excellent quality of raw materials, Boostaro is a smart choice for those who truly want to improve their sexual performance.
👉 Explore the Official Website to learn more about how Boostaro can help you take control of your sexual health and see why it’s gaining popularity in 2025.
#2 Prolong Power
3.7 / 5
TOTAL RANKING
B-
Overall Grade
Pros
- Contains 3 out of 5 must-have ingredients
- Vegan, non-GMO, and gluten-free
- Made in the USA
Cons
- Some users report nausea and headaches after consumption.
- Users report an unpleasant aftertaste when consuming Prolong Power
- ontains some ingredients with questionable efficacy and safety.
- increase in blood pressure
- There was no refund under warranty.
After 40 days of use, results with Prolong Power were mixed. Some users noticed slight improvements in stamina, but many reported little to no change in erectile function, aside from some side effects such as increased blood pressure and headaches.
Marketed as a natural solution for erectile dysfunction, Prolong Power contains ingredients known to help improve blood flow, increase testosterone production, and promote sexual health. However, recent research points to a deeper underlying cause of erectile dysfunction: the accumulation of toxins in testicular interstitial cells, which impairs testosterone production and damages penile blood vessels. Unfortunately, this underlying problem is not addressed by Prolong Power ingredients.
User reviews on platforms like Trustpilot reflect this inconsistency. While some customers noticed slight energy improvements, others experienced no benefits or reported side effects such as dizziness and digestive discomfort.
We do not currently recommend purchasing Prolong Power, as there are better and more effective alternatives available.
#3 Alpha Bites
3.2 / 5
TOTAL RANKING
B-
Overall Grade
Pros
- Contains 2 out of 5 must-have ingredients
- Vegan, non-GMO, and gluten-free
- Made in the USA
- No fillers or artificial additives
Cons
- Focuses more on testosterone production rather than clinically proven mechanisms for enhancing overall male performance.
- Does not contain alpha GPC.
- No clinical study
- Does not contain all the ingredients specified on the label
- weak erections
After 40 days of use, the results with Alpha Bites were underwhelming for most participants, with many reporting no noticeable improvement in erectile function — resulting in largely negative feedback.
Despite claims of boosting endurance and sexual performance, the product failed to meet user expectations. Sold exclusively through marketplaces like Amazon, Alpha Bites presents a vague ingredient profile, offering no clear disclosure of its active compounds or their dosages. This lack of transparency raises serious questions about its potential effectiveness.
Scientific studies on erectile dysfunction increasingly highlight the role of toxin buildup in the testicular interstitial cells — a factor that impairs testosterone production and blood flow. Unfortunately, Alpha Bites does not appear to include ingredients designed to target this root cause.
User reviews on Amazon often mention little to no results, with some also reporting mild digestive side effects. The fact that the product is only available through third-party sellers heightens the risk of encountering counterfeit versions. Moreover, the absence of a money-back guarantee or verifiable clinical testing significantly weakens consumer trust.
With limited scientific support, unclear formulation, and no meaningful quality assurances, Alpha Bites struggles to deliver on its promises — leaving many users disappointed and doubtful of its effectiveness.
#4 Iron Pump
2.8 / 5
TOTAL RANKING
C
Overall Grade
Pros
- Integrated with a product that millions of men already trust for boosting their testosterone levels.
- No artificial additives
- Vegan, non-GMO, and gluten-free
- Made in the USA
Cons
- high price compared to others
- Does not contain alpha GPC.
- Users report an unpleasant aftertaste when consuming.
- Contains some ingredients with limited proof of efficacy
- Dizziness and drowsiness
After 40 days of use, the results with Iron Pump were below expectations for most participants, with many reporting severe headaches and malaise, resulting in negative feedback.
Marketed as a testosterone and vitality booster, Iron Pump is sold both on online marketplaces and the official website. However, the formula lacks transparency — there is no clear breakdown of ingredients or their dosages, making it difficult to assess its true effectiveness.
Scientific research on erectile dysfunction points to the role of toxin buildup in the testicular interstitial cells, which disrupts testosterone production and blood flow. Iron Pump provides no clear solution for this root cause.
Customer reviews frequently mention a lack of noticeable results. The product also lacks essential credibility markers, such as clinical trials or a certificate of analysis. Additionally, being available on third-party marketplaces raises concerns about counterfeit versions, and the absence of a money-back guarantee further reduces consumer confidence.
With vague claims, minimal scientific support, and no clear path to addressing the core issues behind ED, Iron Pump falls short of expectations — leaving many users disappointed and doubtful of its value.
#5 Alpha Force
2,1 / 5
TOTAL RANKING
C-
Overall Grade
Pros
- No fillers or artificial additives
- Non-GMO and gluten-free
- Made in the USA
Cons
- Does not contain 4 out of 5 must-have ingredients
- Not vegan
- No clinical study
- dizziness and high blood pressure
- does not offer online support
- 90% of tests showed weak erections
After 40 days of testing, the results with Alpha Force were quite modest. Many users reported severe nausea and an extremely strong taste after taking the product, leading to generally lukewarm feedback..
Positioned as a fast-acting topical solution, Alpha Force promises to enhance blood flow and trigger erections within minutes. However, clinical data suggests it’s effective for only about 25% of men with mild erectile dysfunction — offering limited benefit for those with moderate to severe symptoms.
The formula of Alpha Force primarily consists of alcohol, glycerin, and propylene glycol, aimed at creating a cooling effect. However, the product lacks key botanical extracts or nutrients commonly associated with long-term support for sexual health. Additionally, it does not address the core issue highlighted in ED research: toxin accumulation in the testicular interstitial cells, which impairs testosterone production and blood circulation.
Customer feedback on platforms like Amazon reflects this limitation, with an average rating of 2.1 out of 5. Common complaints include lack of results, skin irritation, and the gel’s impracticality for spontaneous moments due to its messy application.
Without long-term clinical validation or ingredients that target the underlying causes of erectile dysfunction, Alpha Force offers only temporary relief — and even that, for a narrow group of users.
So, What is The Best Choice for 2025?
After a series of rigorous tests — both in the lab and with real patients — we identified Boostaro as the #1 supplement for improving male sexual health in 2025. All-natural and clinically proven, Boostaro stood out by delivering fast, consistent results such as: Increased libido and sexual performance, Higher energy levels Improved circulation and overall vitality, It also comes with a 60-day money-back guarantee, showing the brand’s confidence in its product — a major plus in our evaluation. Our mission is to provide real, effective solutions — not empty promises. That’s why every supplement we review goes through a two-step process: In-depth lab analysis Real-world, testing with volunteer patients, Our goal? To recommend products that truly work — backed by science, transparency, and proven results. We’re not here to push one supplement over another. We’re here to help you make the best choice for your sexual health, energy, and overall quality of life.
- Improves Erectile Function and Stamina
- Enhances Energy
- Boosts Libido and Sexual Desire
- 60-day money back guarantee
- discreet delivery
- 24-hour support
