
These side effects may include headaches, back pain, nausea, and dizziness.
Or, you may not experience any side effects at all.
| Drug Name | Absorption Time | Half-life | Metabolism Pathway |
|---|---|---|---|
| Sildenafil | 30-60 min | 4 hours | CYP3A4 |
| Tadalafil | 30-60 min | 17.5 hours | CYP3A4 |
| Vardenafil | 30-60 min | 4-5 hours | CYP3A4 |
| Avanafil | 15-30 min | 3-5 hours | CYP3A4 |
ED medications can cause drug interactions and may not be safe for some users.
Other medications that can interact with oral ED medicine include alpha blockers used to manage hypertension (high blood pressure). For this reason, these should only be combined with proper medical advice. To use ED drugs safely, make sure to tell your healthcare provider about all medications, herbal supplements, and/or other substances you currently use or have recently used. It’s important to take caution with ED medication if you have any type of cardiovascular health condition, such as heart disease, congestive heart failure, an irregular heartbeat, hypertension, hypotension (low blood pressure), or a heart valve issue. It’s also important to use caution before using ED medication if you’ve ever suffered a heart attack, stroke, or have undergone heart surgery within the last six months.
These conditions may increase your risk of having side effects or safety issues from some ED medications. To keep yourself safe, make sure to inform your healthcare provider about any of these medical issues before using any medication for ED. Other conditions that may affect ED medication include: Injuries to or deformations of the penis Injuries to or deformations of the penis Blood cell disorders, such as sickle cell anemia Blood cell disorders, such as sickle cell anemia The best way to keep yourself safe while using ED medication is to tell your healthcare provider about your full health history, including any current medical conditions and issues that you have had in the past. You may also wish to get medical advice on what lifestyle changes might be helpful in restoring erectile function. They’ll be able to assess your risk of issues from ED medication and recommend a treatment plan that’s both safe and effective for you. If you have cardiovascular issues or you’re recovering from a heart attack, you may not be a good candidate for ED medications.
You may also not be able to take ED medications if you’re taking drugs for chest pain, blood pressure, or other cardiovascular issues. Hims offers access to several FDA-approved ED medications online, which you can access following a consultation with a licensed healthcare professional.
| Drug Name | Mechanism | Onset of Action | Duration |
|---|---|---|---|
| Sildenafil | PDE5 inhibitor | 30-60 minutes | 4-6 hours |
| Tadalafil | PDE5 inhibitor, PDE11 inhibitor | 30-60 minutes | Up to 36 hours |
| Vardenafil | PDE5 inhibitor | 30-60 minutes | 4-5 hours |
| Avanafil | PDE5 inhibitor | 15-30 minutes | 6 hours |
Get advice today to explore your options.
Efficacy of Avanafil 15 Minutes after Dosing in Men with Erectile Dysfunction: A Randomized, Double-Blind, Placebo Controlled Study.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Cialis Generic | 2.5mg | 360 + 10 Pills | 260.03€ 247.65€ | |
| Cialis Generic | 40mg | 30 + 4 Pills | 74.97€ 71.40€ | |
| Cialis Super Active | 20mg | 10 Pills | 55.64€ 52.99€ | |
| Levitra Generic | 40mg | 270 + 10 Pills | 561.89€ 535.13€ | |
| Cialis Original | 20mg | 12 Pills | 78.32€ 74.59€ | |
| Levitra Generic | 20mg | 90 + 8 Pills | 180.78€ 172.17€ | |
| Cialis Black | 80mg | 180 + 10 Pills | 356.64€ 339.66€ | |
| Levitra Generic | 20mg | 20 Pills | 52.63€ 50.12€ | |
| Viagra Professional | 100mg | 30 Pills | 88.92€ 84.69€ | |
| Kamagra Gold | 50 mg | 20 Pills | 73.17€ 69.69€ | |
| Kamagra 100 mg | 100 mg | 180 + 6 Pills | 436.79€ 415.99€ |
National Institute of Diabetes and Digestive and Kidney Diseases.
There is no single safest ED drug. Viagra (sildenafil), Cialis (tadalafil), Levitra (vardenafil), Stendra (avanafil), and Caverject (alprostadil) are all FDA-approved for the treatment of erectile dysfunction and are safe for most men to use. These medications for erectile dysfunction underwent extensive clinical testing to check that they’re safe and effective before the FDA approved them. This testing process involves multiple phases of clinical trials and thousands of participants. The FDA reviews the findings from these studies to ensure the drugs aren’t just effective, but also safe for patients to use.
All FDA-approved ED medications have passed this process, meaning the FDA has determined that each is safe and effective for its intended use — in this case, treating erectile dysfunction. The safest medication for you depends on your health history, needs, and other factors. You can work with a healthcare provider to determine which medication is best and least likely to cause side effects for you. If you’ve searched for information about treating erectile dysfunction, you may have come across certain products marketed as over-the-counter alternatives to prescription ED medications. These products include Rhino pills and other supplements that are sold in gas stations and other stores with no need for a visit to the doctor. Hims & Hers has strict sourcing guidelines to ensure our content is accurate and current.
Although uncommon, ED medications can cause certain serious side effects, including temporary vision loss, sudden gel erectile dysfunction decrease or loss of hearing, and priapism — a painful, persistent erection that lasts more than four hours and requires medical attention. If you develop any serious or concerning side effects after taking ED medication, it’s best to talk to your healthcare provider. In the event of an emergency, seek urgent medical attention. Overall, side effects — both mild and serious — are rare with ED medication. The vast majority of men with ED are able to safely use all FDA-approved medications as directed without experiencing major issues.
While oral ED drugs are safe for most men, there are certain medications that shouldn’t be used in conjunction. These include several drugs prescribed for angina (chest pain caused by low blood flow to the heart), heart failure, high blood pressure, and other conditions. Interactions can potentially happen with all ED medications, including newer oral ED medications, such as avanafil (Stendra). In particular, oral ED medications can interact with nitrates and nitroglycerin used to treat angina and cardiovascular disease, among other heart conditions, such as congestive heart failure (CHF). When taken with nitrate drugs, prescription medications for ED can trigger a dangerous drop in blood pressure that may cause dizziness, fainting, or life-threatening events such as a heart attack or stroke. We rely on peer-reviewed studies, academic research institutions, and medical associations.
The reality is that these products are almost always significantly less safe than FDA-approved prescription drugs for treating erectile dysfunction. Over the years, the FDA has investigated many of these products and found that they often include unlabeled, hazardous ingredients. Some contain the same ingredients as prescription erectile dysfunction pills in either unusually low or dangerously high amounts. Because these “ED pills” are not held to the same standards as regulated medications, they may be more likely to cause side effects, interactions, and other issues—even if you’re otherwise healthy. The FDA maintains a list of tainted sexual enhancement products that includes recent products found to contain unlabeled and/or dangerous ingredients.
Our guide to over-the-counter ED “medications” goes into more detail about these products and why tadacip 20mg they’re best avoided for your sexual health. If you’re wondering which ED medication is the safest when it comes to side effects, you should know that all FDA-approved options for ED are fairly comparable. As is true for nearly all prescriptions, medications like sildenafil, tadalafil, vardenafil, and avanafil have the potential to cause side effects. While these effects may be mild or nonexistent for some users, other folks may see more intense effects. That said, most of the side effects associated with oral erectile dysfunction drugs are mild and temporary. We strive to use primary sources and refrain from using tertiary references.
| Drug Name | Approved Age Range | Notes |
|---|---|---|
| Sildenafil | 18-65 years | Approved for adult men |
| Tadalafil | 18-65 years | Also used for benign prostatic hyperplasia |
| Levitra | 18-65 years | Similar to Sildenafil |
| Stendra | 18-65 years | Fast onset, suitable for younger men |
Full Name: Lynn Marie Morski, MD, JD Full Name: Lynn Marie Morski, MD, JD Current Role at Hims & Hers: Medical Advisor Current Role at Hims & Hers: Medical Advisor Education: Juris Doctor - Thomas Jefferson School of Law, 2014 Doctor of Medicine - Saint Louis University School of Medicine, 2005 Juris Doctor - Thomas Jefferson School of Law, 2014 Juris Doctor - Thomas Jefferson School of Law, 2014 Doctor of Medicine - Saint Louis University School of Medicine, 2005 Doctor of Medicine - Saint Louis University School of Medicine, 2005 Training: Primary Care Sports Medicine Fellowship -
The safest ED medication is the one your healthcare provider recommends. All of the ED medications approved by blue pillmen the FDA are safe for most men to use. Medications like sildenafil, tadalafil, vardenafil, and avanafil have been rigorously tested by the FDA. They are much safer than any unregulated over-the-counter supplements said to enhance sexual function. Like other medications, ED medications do have the potential to cause side effects. University of Arizona, 2009 Family Medicine Residency - Mayo Clinic - 2008 Primary Care Sports Medicine Fellowship - University of Arizona, 2009 Primary Care Sports Medicine Fellowship - University of Arizona, 2009 Specialties & Areas of Focus: Mental Health, Primary Care, Psychedelic Medicine Previous Work Experience: Physician & Subinvestigator/Clinician Rater - Kadima Neuropsychiatry Institute, January 2025– Investigator - Elite Clinical Network, June 2024– Physician - Veterans Administration, 2010–2019 Physician & Subinvestigator/Clinician Rater - Kadima Neuropsychiatry Institute, January 2025– Physician & Subinvestigator/Clinician Rater - Kadima Neuropsychiatry Institute, January 2025– Invited Commentary on Psychedelic Therapy: A Primer for Primary Care Clinicians.
The most common side effects of these oral medications include: Side effects of other ED medications differ. The rate of side effects can vary from one ED medication to another, but most issues affect a small portion of users and subside quickly. For example, headache—the most common side effect of many oral ED medications—was reported by 21 percent of men who used sildenafil citrate in clinical trials at a 50 milligram (mg) dosage. In clinical trials of tadalafil and vardenafil, headaches were reported by 11 and 15 percent of men, respectively. For most men who use ED medications, these side effects aren’t serious.
Our guides to the side effects of Viagra, Cialis, and Levitra discuss these issues in more detail. As a newer, more selective medication for ED, avanafil (Stendra) is less likely to cause certain side effects than other ED medications. Trials of avanafil found that only 6.9 percent of men reported headaches while using the typical starting dosage of 100 mg. Other side effects only occurred in a small number of users, even at the maximum 200 mg dosage. If you’re worried about side effects from ED medications, you may prefer avanafil to older drugs such as sildenafil or tadalafil.