However, if you take sildenafil with a high-fat meal, it will take longer for the medication to start to work. If you are taking sildenafil to treat PAH, you will probably take sildenafil three times a day with or without food.
How effective are Viagra, Cialis, vardenafil, and Stendra?
Take sildenafil as needed before sexual activity. The best time to take sildenafil is about 1 hour before sexual activity, but you can take cheapest ed pills the medication any time from 4 hours to 30 minutes before sexual activity. Sildenafil usually should not be taken more than once every 24 hours. If you have certain health conditions or are taking certain medications, your doctor may tell you to take sildenafil less often. You can take sildenafil with or without food. Take sildenafil at around the same times every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Do not take more or less of it or take it more often than prescribed by your doctor. Shake the liquid well for 10 seconds before each use to mix the medication evenly. Use the oral syringe provided with your medication to measure and take your dose.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Levitra Professional | 20mg | 10 Pills | 62.37€ 59.40€ | |
| Kamagra Effervescent Tablets | 100 mg | 42 + 7 Pills | 122.97€ 117.11€ | |
| Viagra Original | 100mg | 34 + 2 Pills | 163.67€ 155.88€ | |
| Cialis Professional | 40mg | 120 + 4 Pills | 436.68€ 415.89€ | |
| Viagra Generic | 50mg | 180 + 8 Pills | 158.82€ 151.26€ | |
| Cialis Black | 80mg | 30 + 2 Pills | 89.11€ 84.87€ | |
| Cialis Black | 80mg | 180 + 10 Pills | 356.64€ 339.66€ | |
| Kamagra Soft Tabs | 100mg | 60 + 4 Pills | 180.59€ 171.99€ | |
| Viagra Professional | 100mg | 20 Pills | 71.14€ 67.75€ | |
| Viagra Generic | 50mg | 60 + 4 Pills | 83.93€ 79.93€ | |
| Kamagra Polo | 100mg | 60 + 4 Pills | 189.39€ 180.37€ |
Follow the manufacturer's directions to use and clean the oral syringe. Do not mix the liquid with other medications or add anything to flavor the medication. If you are taking sildenafil for erectile dysfunction, your doctor will probably start you on an average dose of sildenafil and increase or decrease your dose depending on your response to the medication. Tell your doctor if sildenafil is not working well or if you are experiencing side effects. If you are taking sildenafil for PAH, you should know that sildenafil controls PAH but does not cure it.
- Common ingredients include sildenafil, tadalafil, vardenafil, and avanafil.
- These tablets are used to treat erectile dysfunction in men.
- They typically work by increasing blood flow to the penis.
- Most tablets should be taken 30 to 60 minutes before intimacy.
- Effect duration varies from 4 to 36 hours depending on the medication.
- Side effects may include headaches, nasal congestion, and dizziness.
- Prescription is usually required; consult a doctor before use.
- Do not mix with nitrates or certain medications to avoid serious interactions.
Continue to take sildenafil even if you feel well.
- Natural alternatives include herbal supplements like ginseng and L-arginine.
- Psychological factors like stress can affect tablet effectiveness.
- Proper diet and exercise can improve erectile response over time.
- Avoid excessive alcohol consumption when taking these tablets.
- These medications do not increase sexual desire, only performance.
- Some tablets are available over-the-counter in certain regions.
- Always follow dosage instructions to minimize risks.
- Use caution if you have cardiovascular conditions.
Do not stop taking sildenafil without talking to your doctor. Ask your pharmacist or doctor for a copy of the manufacturer's information for the patient. This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
Why trust our experts?
The most common side effects are headaches, upset stomach, nasal congestion, muscle pain, and facial flushing. But most of these are relatively mild and go away after a few hours. ED drugs can make blood pressure temporarily drop, so never use them if you also take medications that contain nitrates. (Nitrates found in food don't pose a problem.) You also need to be careful if you take any other drugs that lower blood pressure. For example, alpha blockers - such as tamsulosin (Flomax) and alfuzosin (Uroxatral), which are used to treat symptoms of an enlarged prostate, lower blood pressure in some men.
Language matters
Make sure to take them at least four hours apart from an ED drug. It's important to realize that ED drugs don't increase sexual desire, and you have to be ready and sexually stimulated for them to work. The drugs won't work well if you are mentally or emotionally not ready for sex. You can't just take pills for men a pill, pay some bills or wash the dishes, and then go to the bedroom and think you'll be ready to go. When your mind is not there, you are not going to want sex, and no ED drug can fix that problem.
Sildenafil may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
Before trying an ED drug, it's best to step back and analyze your sex life and when your ED occurs. Does it happen all the time or just in certain situations? Is it with only one partner or different ones? Does it ever happen when you masturbate? Are the problems associated with stress or alcohol? tell your doctor and pharmacist if you are allergic to sildenafil, any other medications, or any of the ingredients in sildenafil tablet or suspension. Ask your pharmacist for a list of the ingredients.
| Brand Name | Active Ingredient | Onset of Action | Duration of Effect | Typical Price ($) |
|---|---|---|---|---|
| Viagra | Sildenafil | 30-60 minutes | 4-6 hours | 20-30 |
| Cialis | Tadalafil | 30 minutes | Up to 36 hours | 40-60 |
| Levitra | Vardenafil | 25-60 minutes | 4-5 hours | 25-45 |
| Staxyn | Vardenafil ODT | 15-20 minutes | 4-5 hours | 30-50 |
Some medications should not be taken with sildenafil. Make sure you have discussed any other medications you are currently taking or plan to take before starting sildenafil with your doctor and pharmacist.
| Condition | Rationale | Notes |
|---|---|---|
| Use of nitrate medications | Risk of severe hypotension | Examples include nitroglycerin |
| Severe cardiovascular disease | Potential for cardiac stress | Consult doctor advised |
| Prior eye conditions | Risk of vision loss | Such as non-arteritic ischemic optic neuropathy |
| Allergy to active ingredients | Allergic reactions | Check ingredient list |
| Severe liver or kidney impairment | Metabolism and excretion issues | Consult healthcare provider |
Before starting, stopping, or changing any medications while taking sildenafil, please get the advice of your doctor or pharmacist.
Can Vacuum Devices Help With Erectile Dysfunction?
Asking yourself these types of questions can help identify if your ED may be more psychological than physical. You might benefit from sex therapy with your partner, or you may need treatment for a specific condition that affects your desire and sexual arousal, like post-traumatic stress disorder, depression, or anxiety. As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles. No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.
Can you use baking soda for erectile dysfunction treatment?
Sildenafil (Viagra) is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Sildenafil (Liqrev, Revatio) is used to improve the ability to exercise in adults (Liqrev, Revatio) and children 1 year of age and older (Revatio) with pulmonary arterial hypertension (PAH; high blood pressure in the vessels carrying blood to the lungs, causing shortness of breath, dizziness, and tiredness). Sildenafil is in a class of medications called phosphodiesterase (PDE) inhibitors. Sildenafil treats erectile dysfunction by increasing blood flow to the penis during sexual stimulation. This increased blood flow can cause an erection.
Key takeaways
Sildenafil treats PAH by relaxing the blood vessels in the lungs to allow blood to flow easily. If you are taking sildenafil to treat erectile dysfunction, you should know that it does not cure erectile dysfunction or increase sexual desire. Sildenafil does not prevent pregnancy or the spread of sexually transmitted diseases such as human immunodeficiency virus (HIV). Sildenafil comes as a tablet and suspension (liquid) to take by mouth. If you are taking sildenafil to treat erectile dysfunction, follow your doctor's directions and the guidelines in this paragraph. tell your doctor if you are taking street drugs containing nitrates ('poppers') such as amyl nitrate, amyl nitrite, or butyl nitrate while taking sildenafil. Your doctor will tell you not to take sildenafil if you are taking street drugs containing nitrates. tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, and nutritional supplements you are taking or plan to take. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
What Lifestyle Changes Can Help With Erectile Dysfunction?
Erectile dysfunction (ED) drugs are more readily available than ever before, and in general, men have gotten past any stigma about needing them. Yet many men still approach ED drugs the wrong way. Men feel their sex life is not good and see an ED drug as an easy, quick-fix solution. But more times than not, there are underlying issues at play that a pill can't help. While men might have other sexual issues, such as low libido, premature ejaculation, and the inability to achieve orgasm, ED pertains explicitly to not being able to get or vardenafil premature ejaculation maintain an erection.
The best place to get medications for ED
ED drugs address only that issue, by improving blood flow into the penis and keeping the blood in place to maintain an erection. There are four ED drugs currently available: sildenafil (Viagra), avanafil (Stendra), tadalafil (Cialis), and vardenafil (Levitra). At least one ED drug works in about 70% of men, but results vary among individuals. Men who have nerves or arteries damaged by prostate surgery, diabetes, or cardiovascular disease often do not respond as strongly to ED drugs. Finding out is often a trial-and-error approach.
ED drugs are not safe for all men.
Many doctors first prescribe Viagra because it has been around the longest and has a high success rate. If one drug doesn't work after a predetermined period, your doctor may increase the dosage or prescribe one of the others. Sometimes, you have to try all of them before knowing whether ED drugs work for you. An ED drug kicks in within 15 minutes to an hour after you take it and can last anywhere from four to five hours up to 24 hours or longer depending on the drug. (See "ED drugs: How soon and how long?") It's best not to take the pill with food or soon after a meal, which can block absorption. you should know that sildenafil is available under the brand names Liqrev, Revatio, and Viagra. You should only be treated with one of these products at a time.
What Are the Best Medications for Erectile Dysfunction?
This improves blood flow, which allows for an erection to last longer. Herbal products and dietary supplements that claim to be alternatives for ED aren’t regulated by the FDA. So it’s hard to determine which is best or if they’re even safe and effective. If you’re experiencing ED symptoms, it’s a good idea to speak with a healthcare professional about your treatment options. Like all medications, ED medications also carry a risk of side effects.
Key differences between ED medications
Speak with a healthcare professional about potential side effects and whether these medications would be safe for you to take. Phosphodiesterase 5 (PDE5) inhibitors are a class of medications used to treat erectile dysfunction (ED). The available PDE5 inhibitors include sildenafil (Viagra), tadalafil (Cialis), vardenafil (previously sold as Levitra and Staxyn), and avanafil (Stendra). Currently, one PDE5 inhibitor isn’t considered the best for ED. The best ED medication for you depends on many factors such as how often you plan to use it, potential side effects, and how much they cost.
Some side effects can be serious. If you experience any of the following symptoms, call your doctor immediately:
Plus, many people alternate between ED medications, depending on their individual needs. Talk to a healthcare professional about which ED med would be the best choice for you. Effect of high-fat breakfast and moderate-fat evening meal on the pharmacokinetics of vardenafil, an oral phosphodiesterase-5 inhibitor for the treatment of erectile dysfunction. Comparing vardenafil and sildenafil in the treatment of men with erectile dysfunction and risk factors for cardiovascular disease: A randomized, double‐blind, pooled crossover study. Oral phosphodiesterase-5 inhibitors and hormonal treatments for erectile dysfunction: A systematic review and meta-analysis. The following nonprescription or herbal products may interact with sildenafil: cimetidine (Tagamet HB), St.