Over-the-Counter ED Pills: Natural Erectile Dysfunction Supplements

Which OTC ED Pills Actually Work?

Erectile dysfunction (or ED) is something that no man one wants to experience. According to the American Psychiatric Association, erectile disorder occurs when a man experiences one or more of the following symptoms during sex at least 75% of the time:

  • The inability to achieve an erection during sex,
  • Difficulty maintaining an erection until completion of sexual activity
  • A noticeably diminished erection quality/hardness during sex

A number of erectile dysfunction treatments are offered in order to help reduce or reverse these symptoms, including sex therapy, medication and lifestyle changes. However, these treatments do not always produce satisfactory results. Additionally, these therapies can be very expensive and invasive.

Fortunately, there is a more convenient, less expensive and less invasive solution for treating this frustrating and embarrassing condition. Many cases can be quickly and effectively treated when using the best OTC (over-the-counter) ED pills.

Doctors now endorse some supplements that are formulated using a blend of powerful herbs, vitamins, and nutrients. These supplements are completely safe and have no side effects.

These male enhancement pills for men offer a safe and natural method for renewing your sex drive and bedroom performance. Within days, most men will begin to see and feel the results.

How We Selected The Best Non-Prescription ED Pills

After extensive testing and research, we reviewed and ranked what we found to be the best male enhancement pills on the market. The following criteria were used to assess each product:

  • Ingredients/Formulation
  • Results/Effectiveness
  • Customer Reviews/Feedback
  • Money-Back Guarantee/Return Policy
  • Customer Support

Each of the products listed here scored over a 90% aggregate rating based upon the above criteria. Additionally, we have classified each supplement based on the type of user it would benefit most, based on specific benefits being sought.

Top 5 Best Erectile Dysfunction Pills 2024 – Quick View


 #1: VigRX Plus: *Editor’s Choice* Best Male Enhancement Pills 
VigRX Plus package on white background
9.8
  • Harder, bigger erections.
  • Significantly boosts sex drive.
  • Clinically-backed formula
  • Doctor approved and recommended.

Jump to Details  See It


 #2: Erectin 
Erectin bottle on white background
9.7
  • Bigger, harder erections
  • Last longer with greater control
  • Increases testosterone levels
  • Greater sex drive & orgasm intensity

Jump to Details  See It


 #3: MaleExtra 
MaleExtra pills
9.5
  • Unique formula not found elsewhere
  • Bigger, firmer erections
  • More powerful orgasms.
  • Increases sex drive & performance

Jump to Details  See It


 #4: Viasil 
Viasil box on white background
9.3
  • Boosts sex drive
  • Get larger, thicker erections
  • Helps maintain an erection
  • Increases sexual stamina and staying power

Jump to Details  See It


 #5: Performer 8 
Performer 8 bottle on white background
9.2
  • Eight Male Enhancement Benefits.
  • One-of-a-Kind Formula.
  • Research-Backed Ingredients.
  • Improved recovery

Jump to Details  See It


 1. VigRX Plus 

Can you remember a time when you would get an erection at the drop of a hat, without even trying? You were ready to go at a moment's notice. What the hell happened?

Luckily, VigRX Plus (VigRXPlus.com) can help you regain some of the magic of those glory days, letting you have those spontaneous erections and providing them on-demand. VigRX Plus is the best male enhancement supplement for giving men long-lasting, rock-hard erections.

VigRX is one of the most trusted names in male enhancement supplements, and has a long history of clinical research and satisfied customers to prove it. Developed by Leading Edge Health, The VigRX brand has been successfully enhancing the sex lives of men for over 20 years. During this time, the company has gained a loyal following of lifetime customers.

VigRX Plus is the result of extensive cutting-edge research with a formula of libido boosters and aphrodisiacs that was scientifically designed to deliver results that meet or exceed all expectations.

These components work by increasing nitric oxide levels in the body, which is a molecule that increases blood flow to the penis. When the time is right, nitric oxide relaxes and widens blood vessels in the penis, allowing blood to fill the chambers that create an erection.

VigRX Plus also has clinical studies that provide evidence for the effects on erection strength and size. According to the results of one three-month triple-blind study, those men receiving the supplement treatment for erectile dysfunction reported more than a 71% improvement in sexual satisfaction, a better than 62% increase in ability to sustain an erection, and a 47% boost in libido.

You can see the results from these studies and a lot more at the VigRX Plus clinical study page.

Benefits

  • Harder, bigger erections
  • Increased staying power to delay ejaculation
  • More intense orgasms
  • Significant boost to sex drive
  • Greater confidence in the bedroom

Ingredients

All the nine active ingredients are specifically designed to elevate nitric oxide levels, which are very important because NO2 relaxes the muscle tissues of corpus cavernosa (a pair of cylindrical tubes that run through the penis). By relaxing and expanding these tubes it helps more blood flow to the penis. This is what causes the penis becomes full and stiff.

Leading Edge Health only uses fresh, high-quality ingredients, so you never have to worry about ingesting fillers, dyes, or artificial additives. All the ingredients used are natural and were selected only after extensive research and testing.

The dose is two tablets daily. Each VigRX pill includes the greatest dosage of its fresh, high-quality components, maximizing the usage of BioPerine® to guarantee that every essential nutrient is completely absorbed by your body for best results.

The active ingredients found in the VigRX Plus formulation include:

  • Asian Red Ginseng
  • Catuaba bark extract
  • Muira puama bark extract
  • Damiana
  • Epimedium leaf extract
  • Ginkgo Biloba
  • Hawthorn berry
  • Saw Palmetto
  • Bioperine

VigRX Plus supplement facts

All the ingredients listed are highly effective already, but by adding BioPerine, they are made even more so. BioPerine is a patented ingredient derived from black pepper which enhances the absorbency and effectiveness of ingredients that are combined with it.

As a result, the inclusion of Bioperine ensures that all the other ingredients are more thoroughly absorbed, allowing the VigRx Plus works much more effectively.

VigRX Plus shipping info.


Pros

  • Clinically tested formulation
  • Doctor-Approved
  • Includes Bioperine
  • Produced in the U.S.A.
  • 67-day refund guarantee

Cons

  • May require up to 3 months to experience the full effects
  • Continued use is necessary in order to maintain benefits
  • Expensive, but you may save money by purchasing many boxes at once.

More than 1.2 million men have used VigRX Plus as their over-the-counter erectile dysfunction medication of choice. It's also been recommended for use by medical professionals like Dr. Steven Lamm, who runs the NYU Center for Men's Health. VigRX Plus is one ED supplement that allows you to turbocharge your sex drive and knock your partner's socks off with bigger, harder, long-lasting erections - not to mention greater staying power and more explosive orgasms.

VigRX Plus is an all-natural men's ED medication that is also backed by a 67-day money-back guarantee. If for whatever reason you are not fully satisfied with your results, you can just send back the empty boxes and get 100% refund for price of the pills minus the shipping charges.

You have absolutely nothing to lose - but potentially your sex life and manhood to regain. The rigorously tested ED treatment has the high-quality ingredients you need to gain consistent hardness and reverse those weak erections.

 >> Click Here for the Lowest Price on VigRX Plus <<  


 2. Erectin 

Erectin OTC ED pills

Erectin (Erectin.com) is one of our picks as one of the best ED pills that help you to stay hard. A clinical study involving 78 men with mild to moderate ED found that Erectin could improve the hardness of erections, increase sexual stamina and raise testosterone levels.

Erectin is not a quick fix. Like other natural erection supplements (but unlike prescription ED drugs), Erectin isn't taken as needed - you take it every day, allowing its effects to build up in your body to begin taking effect. The majority of users seem to notice an improvement in their libido, sexual stamina and erection quality within the first month.

Many users also report a slight gain in penis size due to the increased amount of blood going to the penis during an erection. Some users have also reported positive psychological benefits as well, such as a decrease in anxiety and depression.

Additionally, Erectin has two unique features that set it apart from its competitors: liquid gelcaps and enteric coating.

Liquid gelcaps allow the ingredients to be absorbed more efficiently than hard tablets. This allows for more rapid and effective results.

The enteric coating on the gelcaps protects the ingredients from becoming degraded by stomach acid. This ensures that the formula will remain intact long enough to make it to the small intestines for full absorption.

Benefits

Erectin's herbal blend targets several areas of a male sexual health to increase sexual performance and libido. Although each benefit by itself would welcomed by many men, when combined they can make a dramatic difference.

The main benefits users report when using Erectin include:

  • Bigger, harder erections
  • Ability to last longer with greater control
  • Boosts testosterone
  • Greater orgasm intensity
  • Improved blood flow to the penis
  • Enhanced libido

Ingredients

Erectin has 11 active ingredients in its all-natural formula. The formula was proven to be effective after a thorough 12-week clinical study.

These ingredients include:

  • Hawthorne berries
  • Korean red ginseng
  • Ginkgo biloba extract
  • Horny goat weed
  • Muira puama bark extract
  • Cuscuta Chinensis
  • Saw palmetto
  • Tribulus Terrestris seed extract
  • Catuaba bark
  • Damiana leaf
  • Bioperine

Erectin supplement facts label

These ingredients should not cause any side effects for most men. Mild fever was the only side effect reported in the clinical trial.

However, because Erectin contains ingredients that can affect blood flow, it could potentially be problematic for men who have significant cardiovascular disease, or who are taking heart or blood-thinning medication.

As with any new supplement, we recommend consulting your doctor before deciding to use over-the-counter erectile dysfunction pills like Erectin.

Taking one pill with food twice per day is the suggested starting dosage, ideally once in the morning and one at night. You can gradually increase the amount of your dosage to up to four pills per daily (with your doctor's OK). However, you shouldn't take more than four pills in a 24-hour period.


Pros

  • Bigger, harder, longer-lasting erections
  • Formulated with all-natural ingredients
  • Benefits are supported by clinical research
  • Gelcaps increase absorption efficiency
  • 67-day money-back guarantee

Cons

  • It takes several weeks before seeing full effects
  • Only orders of multiple packages qualify for free shipping
  • Needs to be taken on a consistent basis to maintain results

Erectin comes with a big money-back guarantee, allowing you to test the product for up to two months after you receive it to verify its effectiveness for yourself. You will need to return any unopened product to get the money-back guarantee. You'll also need to cover the return shipping costs.

And you are covered regardless of the quantity you buy, so it's a good idea to go ahead and purchase a larger quantity in order to qualify for free shipping.

Erectin has ingredients that have been shown to increase blood flow to the penis, leading to stronger and longer-lasting erections. Erectin may not be as convenient or fast-acting as erectile dysfunction drugs like Viagra and Cialis, but it's still effective, 100% natural and has no negative side-effects for most men.

 >> Click Here for the Lowest Price on Erectin << 


 3. MaleExtra 

Male Extra bottle on white background

Male Extra (MaleExtra.com) is another high-rated product among the best OTC ED pills that we reviewed. It's packed with natural, highly effective erection-enhancing compounds.

This product works to increase blood flow to your penis, which results in stronger, bigger and longer-lasting erections. It increases your sexual performance along with enhancing your orgasms.

Male Extra is an ED treatment that directly targets the main source of erectile dysfunction. By boosting nitric oxide production, the pills create an increase of blood flow to your penis, allowing you to penetrate and satisfy your partner on demand.

Male Extra is also one of the best male enhancement products for boosting your sex drive. Many men notice a decline in their sex drive as they age due to diminishing testosterone levels that start in their mid-30s.

The MaleExtra formula also helps raise low T-levels, which is one of the main contributors to low libido in men.

Benefits

By taking MaleExtra on a regular basis, users report experiencing the following benefits:

  • Larger, more rigid erections
  • Intense orgasms
  • Huge surge in sex drive
  • Better sexual performance
  • Improved confidence in the bedroom

Ingredients

Male Extra is composed of 100% natural, clinically-proven and safe substances that provide significant results without any side effects. Five out of seven ingredients included in the formula are only found in Male Extra, making this product unique compared to any other natural male enhancement medication.

The full list of the ingredients used include:

  • Cordyceps
  • Ellagic acid
  • L-arginine HCL
  • L-methionine
  • Methyl sulfonyl methane
  • Niacin
  • Zinc

Male Extra supplement facts label

Male Extra is the only male enhancement supplement that uses ellagic acid and L-arginine HCL. You won't find these proven erection-enhancing ingredients anywhere else.

Cordyceps is also key ingredient in Male Extra. This naturally-occurring aphrodisiac has long been used in traditional Chinese medicine as a treatment for improving libido and sexual function.

All these ingredients were specifically selected for their ability to dramatically boost erectile strength and sexual performance. Additionally, numerous studies have supported their effectiveness, which can be viewed on the MaleExtra website.

MaleExtra benefits.


Pros

  • Improves sex drive and performance
  • Produces larger, harder, and longer-lasting erections
  • More powerful orgasms
  • Discounts and freebies on purchases of multiple units
  • Free worldwide delivery and a 100-day money-back guarantee

Cons

  • It will take a few weeks to experience the full benefits.
  • Product requires continued use to maintain its effects.
  • Refund only honored when purchase is made through the company website.

Male Extra is a 100% natural product that can revitalize your sexual drive. By taking 3 pills per day, you will notice an increase in libido as it turns back the clock on your erection quality, sexual performance, and orgasm intensity.

 >> Click Here to Get the Lowest Price on Male Extra << 


 4. Viasil 

Viasil ED Supplement box

Viasil (Viasil.com) was created by Swiss Research Labs, and is a highly effective male enhancement supplement. It is marketed as a natural Viagra substitute and contains a variety of novel ingredients.

Viasil promotes better blood flow and increases nitric oxide (the main component responsible for erections), as well as combating a low sex drive due to the effects of aging or SSRIs.

Viasil allows you to use natural ingredients instead of taking a medication like Viagra, Cialis or similar ED drugs. One capsule per day is enough to rejuvenate your bedroom performance.

Benefits

Viasil increases ATP production and blood circulation, due to its ingredients. Your sex life can be negatively affected by the decline in ATP levels that occur with age. Viasil can increase ATP levels to improve blood flow, erection quality and energy levels - which combined have the potential to revitalize your sex life.

With regular use, Viasil's formula can provide the following benefits to men:

  • Boosts sex drive
  • Get larger, thicker erections
  • Helps maintain an erection
  • Increases sexual stamina and staying power
  • More pleasurable orgasms
  • Increased confidence in the bedroom

Ingredients

Viasil's unique blend of all-natural ingredients can enhance the production nitric oxide and ATP. In this way Viasil is able to correct erectile dysfunction as well as improve sexual performance.

Viasil contains the following ingredients:

  • Epimedium brevicornum (horny goat weed)
  • Zinc
  • Citrus Sinensis
  • Ginkgo Biloba
  • Tribulus terrestris
  • Panax ginseng root extract
  • Pomegranate

Viasil supplement facts label

Viasil contains a unique blend of all-natural ingredients that have been scientifically proven to enhance the production of nitric oxide and ATP, which are essential for correcting erectile dysfunction and improving sexual performance.

With its safe and natural formula, Viasil offers benefits such as a boost in sex drive, larger and thicker erections, improved stamina, and pleasurable orgasms. Although Viasil does not contain a huge number of ingredients, the scientific research supporting their benefits is strong.

Information about how to purchase Viasil.


Pros

  • Safe, natural sexual enhancement without ED drugs
  • Original formula
  • Free global shipping
  • Increases blood flow, energy levels and orgasm intensity
  • Safe ingredients in tablets
  • 100-day money-back guarantee
  • Free Viasil Instant Erection Gel with purchase of 2- or 3-month supply

Cons

  • Effects seen relatively quickly, but must be used daily for best results
  • Single-box orders are not eligible for the refund policy.
  • Best results seen in older men or those taking SSRIs

Buyers who purchase for a 2 or 3 month supply of Viasil will receive a complimentary tube of their Instant Erection Gel. It's non-sticky, silky-smooth, and has no color, taste or odor. Designed to enhance the effects of the Viasil ED pills, it will quickly give you a a bigger, stronger erection and enhanced sex performance.

Viasil's money-back guarantee is another plus. You get three months to test the supplement to see how well it works for you.

If you don't feel it's for you, you can return the product for a full refund, less the cost for you to mail it back. A lot of other products guarantees are of a shorter duration or only provide refunds for unopened items, but Viasil offers a full refund regardless if you used the product or not.

If you're in search of a natural solution to performance problems without the need for ED medications like Viagra or Cialis, Viasil tablets are a great choice. With a generous 100-day money back guarantee, positive customer reviews, and an original ingredient profile, this one's a safe bet.

 >> Click Here to Get the Lowest Price on Viasil << 


 5. Performer 8 

Performer 8 product display

Performer 8 (Performer8.com) is an all-natural male enhancement ED pill that will naturally help renew your erection quality and sexual performance. It promises an increased sex drive, hard erections and greater control.

The Performer 8 formula was developed in collaboration by top experts in Europe, and includes nine all-natural ingredients tested and combined in scientifically calculated proportions. These ingredients were combined to make the most effective OTC ED pill to please both you and your partner.

Benefits

So why is it called Performer 8? The name comes from the pill's eight primary effects.

These 8 benefits are:

  • Boosts sexual endurance
  • increases sex drive
  • Raises testosterone levels
  • Improves staying power
  • Enhances erection size and quality
  • Improves sexual performance
  • Increases semen volume
  • Boosts confidence and self-esteem

Ingredients

Performer 8 contains nine proven ingredients that help treat erectile dysfunction, and it stands out from other male enhancement products due to the extensive clinical trials that have been conducted on its ingredients. It took the company more than a decade to perfect the ED medication before releasing it to public, in order to ensure that they had the most effective formula.

Performer 8 ingredients are vegan-friendly, soy- and gluten-free, and non GMO. They include the following:

  • Muira Puama
  • Ashwagandha (KSM-66(r))
  • Iron (Ferrous Bisglycinate)
  • Maca root extract
  • Panax Ginseng
  • Horny Goat Weed
  • Pine bark extract
  • Glucuronolactone
  • Grape seed extract

Performer 8 supplement facts label

Muira puama is the formula's primary active ingredient. This extract comes from the stems and roots of a bush native to the Amazon rainforest that has long been used in traditional medicine as an aphrodisiac.

One two-week study involved over 260 men suffering from moderate ED symptoms who took Muira puama. Researchers noted an overall improvement in the participants' erection quality and more than a 60% rise in libido.

Reasons to use Performer 8 penis pills.


Pros

  • One-of-kind Formula
  • Free eBooks Included with Purchase
  • Discounted prices for ordering multiple bottles
  • Free global shipping on all orders
  • No questions asked, lifetime Money-Back Guarantee

Cons

  • Some may find the single bottle price to be pricey.
  • The lifetime guarantee only covers one opened bottle (all unopened bottles are still covered).

Performer 8 is a powerful male performance supplement. It includes global shipping and a lifetime guarantee of satisfaction. You also get a 100% guarantee of satisfaction and are eligible for a refund at any time during your life if you aren't satisfied.

Performer 8 is for you if you want harder, longer-lasting erections. This male enhancement supplement is proven to work for treating erectile dysfunction at all stages. This product can improve your sexual health and rejuvenate your sex life - within weeks, or even days - by improving sexual performance and boosting confidence.

 >> Click Here to Get the Lowest Price on Performer 8 << 


Conclusion

The availability of over-the-counter ED pills and natural erectile dysfunction supplements provides a convenient, less expensive and less invasive solution for treating this frustrating and embarrassing condition. These supplements have been endorsed by doctors and offer a safe and natural method for renewing your sex drive and bedroom performance.

With careful selection based on ingredients, formulation, and customer reviews, men can find effective options to address erectile dysfunction and improve their sexual health. Remember, it's important to consult with a healthcare provider before starting any new supplement regimen, especially if you are already taking medications or have underlying health conditions.

Frequently Asked Questions (FAQs)

What Is Erectile Dysfunction?

ED can be defined as a condition where it is difficult for men to achieve or maintain an erection during sex. It can be caused by certain underlying health conditions, but is also commonly due to psychological reasons. Men with ED may end up with a diminished self-confidence and relationship difficulties as a result.

However, if you're struggling with symptoms related to ED, then you're not alone. In fact, one study shows that over half of men are experiencing some form of erectile dysfunction.(1)

Who Is At Risk For ED?

While it is completely normal for men to have erection problems from time to time, it can become an ongoing condition if there are underlying health or psychological factors involved.

Erectile dysfunction is typically more common as men get older and for those with certain risk factors, including obesity, diabetes, and depression. Although ED is most commonly seen among males over the age of 50, it is increasingly becoming more common in men belonging to younger age groups, most likely due to addiction to watching porn.

What Are OTC ED Pills?

Over-the-counter ED pills dietary supplements intended to naturally improve erection quality, sex drive and sexual performance in men. They typically contain a combination of vitamins, minerals, herbs, and other compounds that have been studied for their potential to boost erectile function.

What Are Some Common Ingredients Used In Natural ED Supplements?

Male enhancement supplements often contain a variety of ingredients that are believed to support or enhance erection quality and sex drive. However, it’s important to note that the effectiveness and safety of these ingredients can vary, and not all of them have strong scientific backing.

Some common ingredients found natural male enhancement pills include:

  • Red Ginseng
  • Catuaba bark extract
  • Muira puama bark extract
  • Damiana
  • Epimedium leaf extract (Horny Goat Weed)
  • Ginkgo Biloba
  • Hawthorn berry
  • Saw Palmetto
  • Bioperine
  • Tribulus
  • Pomegranate extract (Ellagic acid)
  • Maca root
  • Ashwagandha
  • Zinc

It’s important to remember that the scientific evidence supporting the efficacy and safety of these ingredients can be mixed, and individual responses may vary.

Do Over-the-Counter ED Supplements Work?

Yes. Although there are many products being sold that have little effect on sexual drive and performance, there are a number of highly effective supplements that do work very well. While certain vitamins, minerals, and herbal extracts have been shown to contribute to an increase in erection function, the efficacy of male enhancement supplements varies depending on the type of ingredients used and on the individual.

It’s important to understand that supplements are not a substitute for a healthy lifestyle and diet, both of which can significantly influence sex drive and erection quality.

Should I Take ED Pills?

These are the questions that you should ask yourself before taking Ed pills:

  • Do you feel like you're not performing well when it comes to your sex life?
  • Does if seem like your performance in the bedroom is not only declining - but getting worse?
  • Do you hesitate about entering into a new relationship because of a lack of confidence or performance anxiety?
  • Does it seem like your partner is frustrated or not being fully satisfied sexually?

If so, you are a prime candidate for ED pills - but you're not the only one, and it is definitely NOT something to be ashamed about. The good news is that it's possible to reduce and even reverse the aging trend with the help of the latest advances in nutritional support.

Sexual disorders such as erectile dysfunction have traditionally been treated with costly prescription medicines that come with unpleasant side effects, or sex therapy, which is expensive, inconvenient and time-consuming.

But with the research-backed natural male enhancement pills that are available now, you don't even need to visit your doctor. These supplements will start to rejuvenate you within days, boosting your confidence and allowing you to fulfill the needs of your partner.

Are Over-The-Counter ED Pills For Men Safe?

Most male enhancement supplements are considered safe when taken in recommended doses. However, like any supplement, they can cause side effects, particularly if taken in excessive amounts. Always consult with a healthcare provider before starting any new supplement regimen.

What Are the Potential Side Effects of ED Supplements?

Side effects can vary widely depending on the specific ingredients in a supplement. Possible side effects can range from minor issues like headaches and stomach upset to more serious issues like high blood pressure or kidney damage.

It’s important to follow dosage instructions and consult with a healthcare professional if you experience any unusual symptoms.

How Long Does It Take For These Supplements To Work?

The time it takes to see effects from male enhancement supplements can vary based on a variety of factors, including the specific supplement, dosage, and individual physiology. Some people may notice changes in the first week, while for others it may take a month or so.

Can I Take Erectile Dysfunction Supplements With Other Medications?

The ingredients used in some male enhancement formulas may interact with certain medications. If you are taking any medications or have any health conditions, it is always a good idea to talk to your doctor or pharmacist before starting a new supplement.

How Do I Choose High-Quality Natural ED Pills?

Choose products from reputable companies that follow Good Manufacturing Practices (GMP) and have their products third-party tested for quality and purity. Check for clear labeling of ingredients and avoid supplements that promise unrealistic results.

References
  1. https://pubmed.ncbi.nlm.nih.gov/8254833-impotence-and-its-medical-and-psychosocial-correlates-results-of-the-massachusetts-male-aging-study/
  2. https://wjmh.org/DOIx.php?id=10.5534/wjmh.190151
  3. https://www.nature.com/articles/ijir201245
  4. https://wjmh.org/DOIx.php?id=10.5534/wjmh.180005
  5. https://www.nccih.nih.gov/health/dietary-and-herbal-supplements
  6. https://onlinelibrary.wiley.com/doi/10.1111/and.13640
  7. https://www.phcogrev.com/article/2013/7/13/1041030973-7847112832
  8. https://academic.oup.com/jsm/article-abstract/18/5/868/6955994?redirectedFrom=fulltext&login=false
  9. https://onlinelibrary.wiley.com/doi/10.1111/andr.12671
  10. https://www.niddk.nih.gov/health-information/urologic-diseases/erectile-dysfunction/all-content
  11. https://www.auajournals.org/doi/10.1016/S0022-5347%2817%2934871-1
  12. https://www.sciencedirect.com/science/article/abs/pii/S0302283802001756?via%3Dihub
  13. https://www.urologyresearchandpractice.org/en/yohimbine-as-a-treatment-for-erectile-dysfunction-a-systematic-review-and-meta-analysis-133777%5C
  14. https://pubmed.ncbi.nlm.nih.gov/23140258/
  15. https://www.sciencedirect.com/science/article/abs/pii/S221295881930597X?via%3Dihub
  16. https://wjmh.org/DOIx.php?id=10.5534/wjmh.210071
  17. https://bpspubs.onlinelibrary.wiley.com/doi/10.1111/j.1365-2125.2008.03236.x
  18. https://journals.sagepub.com/doi/10.1177/2631831818822018
  19. https://www.nature.com/articles/s41443-018-0036-4
  20. https://www.worldscientific.com/doi/abs/10.1142/S0192415X18500088
  21. https://www.loc.gov/item/global-legal-monitor/2017-12-12/united-kingdom-viagra-made-available-as-over-the-counter-medication/
  22. https://academic.oup.com/smoa/article/9/6/100437/6956826