ED and Supplements: Ingredients, Evidence & Safety (Guide 2026)

Erectile Dysfunction: What Is It & How Does It Affect Men?

Erectile dysfunction (ED) is the persistent inability to achieve or maintain an erection firm enough for sexual activity.^[1] It’s not just a physical condition but one that can deeply impact emotional well-being and relationships.

"Erectile dysfunction (ED) is the inability to achieve or maintain an erection firm enough for sexual activity. It’s a very common condition that can affect men of all ages, although it becomes more common with age. ED can impact confidence, relationships, mental wellbeing, and quality of life, and it may sometimes be linked to underlying health conditions such as high blood pressure, diabetes, obesity, stress, or poor circulation," explains Abbas Kanani, Pharmacist

The causes of ED range from physical issues like cardiovascular disease, diabetes, and hormonal imbalances to psychological factors such as stress, anxiety, and depression ^[2]. It can also be an early warning sign of underlying health conditions.

Beyond the physical challenges, ED often leads to diminished self-esteem, strained relationships, and mental health struggles.

Treatment options have expanded, and a doctor can walk you through what applies to your situation. Some men also use supplements to support general sexual wellness alongside that care, which is what the rest of this page covers.

Comparison Table

Product	Perform Max	Testosterone Support	PeakErect	VigRX Plus	ErecPrime	TestoPrime
Third-party Tested	Yes	Yes	Yes	Yes	Yes	Not Specified
Highlights	Supports stamina, libido, and healthy blood flow	Supports normal testosterone levels, energy, and vitality	Supports libido, sexual wellness, and circulation	Supports circulation, stamina, and sexual wellness	Supports stamina, libido, and circulation; stimulant-free	Supports normal testosterone levels, energy, stamina, libido, and lean muscle
Customer Rating	4.8/5	4.7/5	4.7/5	4.8/5	4.6/5	4.4/5
Return Policy	60-day money-back guarantee	60-day money-back guarantee	60-day money-back guarantee	67-day money-back guarantee	60-day money-back guarantee	60-day money-back guarantee
Shipping	Free US shipping over $60	Free US shipping over $60	Free shipping	Free Shipping to USA (Lower 48 States)	Free US shipping on bundles	Free shipping may apply on multi-bottle bundles

**Customer ratings are the manufacturer's own published figures and have not been independently verified by WOWMD. Third-party testing status is as stated by each brand.

How Do These Supplements Work to Support Erectile Function?

Most of the ingredients in this category are included for their role in nitric oxide production, which helps relax blood vessels and supports circulation.

Research published in the Journal of Clinical Hypertension describes nitric oxide as a key signaling molecule in the relaxation of smooth muscle in the erectile tissue of the genital organs.^[3]

Ingredients like L-Arginine and L-Citrulline are key players in boosting blood flow. “Citrulline is an amino acid that is a precursor to Arginine which then helps with nitric oxide” explains Dr. Kyle Burton. For more details, check out the artice “L-Arginine and L-Citrulline for ED”.

"L-Citrulline is better because it survives digestion and converts to L-arginine in the kidneys. Nitric oxide relaxes the blood vessel walls and allows blood flow where it needs to go," explains Dr. Raymond Douglas, MD, PhD.

Additionally, herbal remedies for erectile dysfunction, such as Ginkgo Biloba and Tribulus Terrestris, work to naturally enhance libido and stamina, offering a holistic approach to sexual health.^[4]

These male enhancement supplements also support overall vitality by addressing energy levels, hormonal health, and stress management. Vitamins for erection, like Zinc and Niacin, play a crucial role in maintaining testosterone levels and improving endurance.^[3]

These ingredients have been studied individually in human and laboratory research. That research does not establish that any finished formula on this page produces a specific result, and individual responses vary.

Ingredient research is not product research. A study showing an effect for an ingredient at a specific dose does not mean a product containing that ingredient will produce the same effect, particularly at a different dose or in a different combination.

How to Choose the Best Supplements for Erectile Dysfunction

• Look for clinically-backed ingredients: Choose supplements with proven components like Panax ginseng, L-arginine, Pycnogenol, Tribulus terrestris, and Tongkat Ali supported by published research.
• Check for transparent labeling: Ensure the product clearly lists active ingredient dosages and standardized extracts; avoid vague proprietary blends.
• Verify third-party testing: Select brands certified by reputable organizations like ConsumerLab or NSF International for guaranteed purity and potency.
• Review the safety profile: Check for potential side effects and avoid supplements with stimulants, artificial additives, or undisclosed fillers. Consult your doctor if you have existing health conditions.
• Consider brand reputation: Choose established manufacturers with a track record of quality and transparency in the supplement industry.
• Read user reviews: Real customer feedback reveals product effectiveness, side effects, and overall satisfaction before you buy.
• Check the FDA's tainted products database: The FDA publishes a public list of sexual enhancement products found to contain undeclared prescription drug ingredients such as sildenafil or tadalafil. Search any brand you are considering before buying.

Top Ingredients to Look for in ED Supplements (Scientific Evidence)

L-Arginine and L-Citrulline

A study published in Andrology found that lower levels of L-Arginine (L-Arg) and L-Citrulline (L-Cit) are associated with erectile dysfunction (ED), particularly in those with arteriogenic ED. Supplementing these amino acids may improve erectile function by boosting nitric oxide levels, which are crucial for penile erection.^[5]

Read more:Best L-Arginine Supplements

Panax Ginseng (Red Ginseng)

A systematic review published in British Journal of Clinical Pharmacology analyzed seven randomized controlled trials including 363 participants aged 24 to 70 years, on red ginseng for erectile dysfunction (ED). The meta-analysis showed a significant improvement in erectile function. Red ginseng also benefited those with psychogenic ED.^[6] For more detailed information, check out the article “Ginseng for Erectile Dysfunction”.

Gingko Biloba

An animal study published in Urology examined high-dose ginkgo biloba extract in rats following nerve injury and reported effects on nerve survival, nitric oxide synthase fibers, and smooth muscle content.^[7] This was a rodent study. Findings in animals do not establish an effect in humans, and no human trial has confirmed this result.

Pycnogenol (Pine Bark Extract)

A small trial published in the Journal of Sex and Marital Therapy examined a combination of L-arginine and pycnogenol in men, reporting improvements in erectile function scores over three months.^[8] The trial was small and uncontrolled, tested a specific ingredient combination and dose not matched by the products on this page, and its results have not been replicated in larger studies.

Zinc

Zinc is an essential mineral involved in normal testosterone production and reproductive health. A 2023 animal study published in Redox Report examined zinc in lead-exposed rats and reported effects on oxidative stress markers and testosterone levels.^[9] This was a rodent study in a specific toxic exposure model and does not translate to human use.

Tribulus Terrestris

A systematic review published in Nutrients found that Tribulus terrestris supplementation improved erectile dysfunction in some studies, but evidence for increasing testosterone levels was weak. The review included 10 studies with 483 participants. Tribulus terrestris supplementation (doses of 400 to 750 mg/day for 1 to 3 months) improved erectile dysfunction in 3 out of 5 studies that assessed this parameter.^[10]

Maca

Maca is a Peruvian root traditionally used for sexual vitality, stamina, and desire. In a male wellness formula, maca functions as a libido and sexual well-being ingredient rather than a circulation ingredient. This makes it especially relevant for men whose performance concerns connect to low desire, reduced confidence, stress, or lower sexual satisfaction.

As per research in Andrologia, maca extract was examined in men with mild erectile dysfunction. After 12 weeks, men taking maca showed greater improvement in IIEF-5 erectile function scores and reported better sexual well-being compared with placebo.^[11]

Magnesium

Magnesium plays a more foundational role in erectile health. It supports nerve signaling, muscle function, energy production, blood pressure regulation, and glucose metabolism, all of which can influence circulation and sexual performance over time. For ED support, magnesium is most relevant when there is fatigue, metabolic imbalance, stress, or low testosterone status.

A review published in Biological Trace Element Research found that magnesium supplementation increased free and total testosterone levels in both sedentary men and athletes. This supports magnesium's role as a hormone and performance support mineral, though it should not be positioned as a standalone ED treatment.^[12]

Tongkat Ali

Tongkat Ali, also known as Eurycoma longifolia, is best positioned as a testosterone and male vitality support herb. For erectile dysfunction, its role differs from maca and magnesium: it may help support sexual drive, age-related performance concerns, and testosterone-related wellness.

A systematic review published in Medicina found that Eurycoma longifolia supplementation was associated with improved total testosterone levels in men, with stronger relevance in men who have low testosterone. The review also notes that low testosterone is commonly linked with reduced libido and erectile dysfunction.^[13]

What Are the Best Vitamins for Erectile Dysfunction?

The best vitamins for erectile dysfunction are usually the ones that support healthy blood flow, hormone balance, nerve function, and overall cardiovascular health. Vitamin D is often discussed because low levels have been linked with poorer erectile function, especially when deficiency is present. Vitamin B3, also called niacin, may help circulation by supporting healthier cholesterol and blood vessel function

Folate, or vitamin B9, may also play a role in nitric oxide activity, which helps blood vessels relax. Vitamin C supports antioxidant defense and nitric oxide production, while vitamin B12 may support nerve health and energy levels. Minerals such as zinc and magnesium may be useful when low levels affect testosterone, fatigue, or metabolic health. Still, vitamins are not a cure for ED.

Persistent symptoms should be discussed with a healthcare provider, since ED can be linked to heart disease, diabetes, medications, stress, hormonal changes, and other underlying health concerns too.

Other Natural Ways to Support Erectile Function

Other Natural Ways to Support Erectile Function

Lifestyle factors have the strongest evidence base in this area. Supplements are a secondary consideration.

• Exercise regularly: Cardio and strength training improve blood flow and support cardiovascular health, which is essential for strong erections.
• Eat a balanced diet: Focus on fruits, vegetables, lean proteins, and healthy fats to provide nutrients your body needs, including vitamins for erection support. Check out "Best Foods for ED" to know the best and worst for ED.
• Manage stress effectively: Practice mindfulness, meditation, or yoga to reduce anxiety, a common contributor to erectile dysfunction.
• Prioritize quality sleep: Adequate rest maintains healthy hormone levels and libido, both crucial for sexual performance.

Some men add a supplement alongside these changes as part of a broader approach to sexual wellness. "Maintaining a healthy weight, quitting smoking, reducing alcohol intake, managing stress, and getting enough sleep can all help support erectile function," explains Abbas Kanani, Pharmacist.

What Causes Erectile Dysfunction Beyond Age?

What Causes Erectile Dysfunction Beyond Age?

Erectile dysfunction isn’t just a result of aging; it can stem from a variety of physical and psychological factors. Poor blood flow, often linked to conditions like high blood pressure or diabetes, is a common culprit.

Stress, anxiety, and depression can also disrupt sexual performance, making stress management techniques like mindfulness and meditation valuable tools.^[14] Lifestyle habits, such as smoking, excessive alcohol consumption, and a lack of regular exercise, can further impact sexual health.

Hormonal factors, including low testosterone, may also contribute.^[15] Low testosterone is diagnosed with a blood test and treated by a physician.

Additionally, inadequate sleep can lower energy levels and libido, emphasizing the importance of rest for overall well-being.

Identifying and addressing the underlying cause with a doctor is what produces lasting change. No supplement substitutes for that.

How Long Do These Supplements Take to Work?

Many ED support supplements, such as those containing L-Arginine, often noted for the L-arginine benefits for men like better circulation and stamina, or herbal remedies for erectile dysfunction like Ginkgo Biloba, may start improving blood flow and energy levels within a few weeks of consistent use. It is also important to follow the right L-arginine dosage for ED, as taking the correct amount supports better circulation and stamina.

Changes some men report, such as improved energy or libido, are generally described over 60 to 90 days of consistent use. Results vary and are not guaranteed.

Factors like your overall health, lifestyle, and adherence to the recommended dosage also play a role. Combining the best supplements for erectile dysfunction with a balanced diet, regular exercise, and adequate sleep can accelerate results.

Who Should Avoid These Supplements?

Do not use these products without talking to your doctor first if any of the following apply to you.

• You take nitrates such as nitroglycerin, isosorbide, or amyl nitrite. Combining nitrates with ingredients that increase nitric oxide can cause a dangerous drop in blood pressure.
• You take a PDE5 inhibitor such as sildenafil, tadalafil, or vardenafil, for the same reason.
• You take medication for high blood pressure.
• You take blood thinners or antiplatelet medication.
• You have heart disease, a history of stroke, or low blood pressure.
• You take thyroid medication, sedatives, or immunosuppressants. Ashwagandha, which appears in one of the formulas promoted on this page, can interact with all three.
• You have a shellfish allergy. Perform Max and PeakErect both contain shellfish.
• You are under 18.

If you experience chest pain, dizziness, fainting, or an irregular heartbeat, stop use and seek medical attention.

Are These Supplements Safe?

Dietary supplements are not reviewed or approved by the FDA before they go on sale, and quality varies considerably across the market. Third-party testing and full-dose labeling reduce risk but do not eliminate it. This category in particular has a documented history of products adulterated with undeclared prescription drug ingredients.

Why Trust WOWMD?

WOWMD delivers science-backed supplement recommendations through research and expert analysis. We evaluate products based on clinical evidence, ingredient quality, third-party testing, and honest consumer feedback, never compromising integrity for promotion.

Meet the Experts

• Dr. Kyle Burton, Doctor of Acupuncture and Herbal Medicine in Kailua, Hawaii, United States
• Abbas Kanani, Pharmacist
• Dr. Raymond Douglas, MD, PhD