RECENT MAJOR CHANGES

Your healthcare provider might also recommend adjusting your sildenafil dosage. Ready to find an erectile dysfunction treatment that works for you?

Indication	Contraindication	Comments
Erectile dysfunction	Use of nitrates	Absolute contraindication
Pulmonary arterial hypertension	Severe cardiovascular disorders	FDA approved for PAH (Revatio)
Raynaud's phenomenon (off-label)	Hypersensitivity to sildenafil	Not FDA approved for this indication
Altitude sickness (off-label)	Concomitant use with alpha-blockers	Use cautiously under supervision

Get advice from one of our healthcare providers to learn more about your options.

7.1 Nitrates

Avoid taking sildenafil if it’s expired. According to the FDA, you should skip taking any expired meds and safely dispose of them for the following reasons: Their chemical composition could be altered, making them unsafe to consume. Their chemical composition could be altered, making sildenafil 45 mg chewable tablets them unsafe to consume. How can you tell if your medications are expired? Check the label for a date, likely next to the abbreviation “Exp.” Want more tips on how to get the most out of sildenafil?

Dysfonction érectile

Read our guide on how to use Viagra for best results. It doesn’t really matter if you forget to take sildenafil because it’s designed for you to take it as you need it. But be careful about accidentally doubling up on doses. Missing a dose before sex is no big deal, though doing so may impact the quality of your erection. However, forgetting you already took sildenafil and taking a subsequent dose within 24 hours can lead to complications, particularly if you go over 100 milligrams total. Don’t be tempted to use expired medicines.

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Viagra Generic	25mg	20 Pills	37.74€ 35.94€	Buy
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Viagra Generic	50mg	90 + 6 Pills	107.37€ 102.26€	Buy
Kamagra	100mg	180 + 6 Pills	436.79€ 415.99€	Buy
Kamagra	100mg	20 Pills	86.09€ 81.99€	Buy
Kamagra Polo	100mg	120 + 6 Pills	327.15€ 311.57€	Buy
Kamagra Oral Jelly	100mg	90 + 8 Sachets	303.56€ 289.10€	Buy
Kamagra Soft Tabs	100mg	60 + 4 Pills	180.59€ 171.99€	Buy
Viagra Generic	100mg	120 + 6 Pills	149.50€ 142.38€	Buy
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Gianmarco Troiano & Giacomo Lazzeri (2021) The sildenafil tablet manforce 50 mg potential toxic combination of grapefruit juice and sildenafil, Toxin Reviews, 40:3, 334-337. Sildenafil citrate induced retinal toxicity-electroretinogram, optical coherence tomography, and adaptive optics findings. Do food and dose timing affect the efficacy of sildenafil?

• Sildenafil is sometimes misused for recreational purposes.
• Misuse can lead to serious health risks, including cardiovascular events.
• Never take medication not prescribed specifically for you.
• Use only under the guidance of a qualified healthcare professional.

Hims & Hers has strict sourcing guidelines to ensure our content is accurate and current. We rely on peer-reviewed studies, academic research institutions, and medical associations.

5.3 Effects on the Eye

So, if you’re a half-grapefruit in the a.m. kind of guy, mention that to your healthcare provider before filling a sildenafil prescription. Keep sildenafil out of the reach of children and pets, and store the medication at room temperature between 68°F to 77°F (20°C to 25°C). You should always follow your doctor’s instructions regarding sildenafil dosing, but your total daily dosage should never exceed 100 milligrams. Even if you’re not getting results from a 100-milligram dose of sildenafil, don’t try to take more.

Can I take Viagra after I’ve had my prostate removed?

If sildenafil isn’t helping with your lackluster erections, there are a few possible reasons. Another kind of treatment altogether (like therapy for psychological ED) Another kind of treatment altogether (like therapy for psychological ED) Addressing underlying health conditions that can contribute to ED Addressing underlying health conditions that can contribute to ED Additionally, taking sildenafil too early (we’re talking more than a few hours before having sex) won’t produce the effects you’re looking for. That means you have to do a bit of sex planning when taking sildenafil. But you might be surprised at how sexy the anticipation can be—for you and your partner. Spend that time exploring new foreplay ideas or sharing your sexual fantasies. We strive to use primary sources and refrain from using tertiary references.

Chemical synthesis

In these cases, your sildenafil tablets would actually be the generic form of Revatio®, a medication that has the ingredient sildenafil, like Viagra, but is FDA-approved for pulmonary arterial hypertension (although it can be prescribed off-label for ED). Be sure to talk through all options with your healthcare provider. And, as is the case with taking any medication, following a professional’s medical advice is crucial. Unlike some other ED meds, you don’t take sildenafil every day. Sildenafil is an as-needed medication that should be taken at least about 30 minutes to an hour before sexual activity, and its effects should last up to four hours.

Viagra Super Active

You should never take more than one dose per day. You may be prescribed sildenafil or Viagra if you struggle with the following symptoms: Getting erections that aren't as firm as you'd like them to be Getting erections that aren't as firm as you'd like them to be Some medications can upset your stomach if you don’t take them with food. You can take this ED medication with or without food. However, high-fat meals can impact the absorption of sildenafil, leading to lower peak plasma levels of the medication, which can translate to lower efficacy. Grapefruit juice can also interfere with how the body processes sildenafil, leading to more side effects. Erectile dysfunction is a condition in which you have trouble getting or keeping an erection firm enough for satisfying sex. Erectile dysfunction affects as many as 30 million men in the United States.

12.3 Pharmacokinetics

You should be aware of the potential side effects when taking any new drug. The most common side effects of sildenafil include: Most of these mild side effects will go away on their own as your body adapts to taking sildenafil. But sildenafil also comes with some more rare but potentially serious side effects like: Sudden loss of vision (potentially a sign of non-arteritic anterior ischemic optic neuropathy or NAION) Sudden loss of vision (potentially a sign of non-arteritic anterior ischemic optic neuropathy or NAION) Priapism (a painful erection lasting longer than four hours) Priapism (a painful erection lasting longer than four hours) If you experience any of these symptoms after taking sildenafil, seek immediate medical attention. And FYI: Even mild side effects can impact your life. If you get an upset stomach every time you take sildenafil, talk with a healthcare professional.

Professional resources

They may recommend changing your dose or switching medications altogether. Read more about potential sildenafil reactions in our sildenafil side effects guide. It might be dangerous to use sildenafil if you have certain medical conditions or take specific drugs. If your healthcare provider told you not to engage in sexual activity because of a heart condition (like a history of heart attack; heart disease; heart failure; angina; or arrhythmia, also known as an irregular heartbeat), it’s probably best to abstain from having sex and taking sildenafil. Using sildenafil when you take medicines for high blood pressure or pulmonary arterial hypertension could cause a dangerous, potentially life-threatening dip in blood pressure. Premature ejaculation (PE) is a sexual dysfunction characterized by a short ejaculatory latency, a perceived lack of control about the timing of ejaculation, and distress and interpersonal difficulty related to ejaculating too quickly. Low testosterone or testosterone deficiency, also known as hypogonadism, is a condition in which patients develop symptoms such as low sex drive, erectile dysfunction (ED), and fatigue because the body doesn’t produce enough testosterone.

• Sildenafil is a phosphodiesterase type 5 (PDE5) inhibitor.
• Its primary function is to improve blood flow to the penis.
• The medication does not protect against sexually transmitted infections.
• Use condoms for protection regardless of medication use.

Though many men don’t like to talk about it, ejaculation problems are very common. Some of the most common issues include premature, delayed, or retrograde ejaculation. Your pelvic floor is a lot like plumbing in your home: you never really think about it unless something goes wrong.

Drug/Class	Interaction Effect	Clinical Significance	Recommendation
Nitrates	Severe hypotension	Contraindicated	Avoid concomitant use
Alpha-blockers	Additive blood pressure lowering	Hypotension risk	Monitor blood pressure closely
CYP3A4 inhibitors	Increased sildenafil levels	Increased side effects	Dose adjustment may be necessary
Alcohol	Enhanced hypotensive effects	Increased dizziness risk	Use with caution

When you think of male sexual dysfunction, concerns like erectile dysfunction (ED) or premature ejaculation (PE) probably come to mind first.

8.7 Hepatic Impairment

Avoid taking sildenafil with nitrates (medications for chest pain) such as isosorbide dinitrate, isosorbide mononitrate, nitroglycerin, and alpha-blockers or other blood pressure medications like riociguat. If you have a condition that puts you at higher risk of priapism—like sickle cell anemia, leukemia, Peyronie’s disease, or multiple myeloma—you should avoid sildenafil. There isn’t enough data to say whether sildenafil is safe for people with this eye condition. Sildenafil can interact with the nitrites found in certain recreational drugs popularly known as “poppers,” causing a dangerous drop in blood pressure. Don’t mix sildenafil with other ED drugs, like Cialis®, Levitra®, Revatio® (another brand name for sildenafil) or Stendra®.

Mécanisme d'action

This can put you at risk for low blood pressure. More of something isn’t always better! Aside from heart medications and other PDE5 inhibitors, taking sildenafil with ritonavir, ketoconazole, itraconazole, or clarithromycin (an antibiotic) can increase the concentration of sildenafil in your body and make you more likely to experience side effects. Talk with a healthcare professional before mixing sildenafil with over-the-counter supplements, which aren’t regulated in the same way as prescription drugs. Learn more about health and drug interactions in our sildenafil interactions guide. But there’s another sex-related issue that’s more common in men than you might expect: difficulty orgasming.

• Long-term safety of sildenafil requires more research.
• Most side effects are mild and resolve on their own.
• Repeated use may cause psychological dependence.
• Regular medical reviews are recommended for ongoing therapy.

Viagra is a medication used to treat erectile dysfunction by improving blood flow to the penis.

6.2 Postmarketing Experience

Don’t mix sildenafil with medications that can cause dangerous interactions. Unsure whether your meds are safe to combine with sildenafil? Regular exercise, a balanced diet, and quality sleep can maximize your overall health and sexual well-being. Consider alternative treatments if sildenafil doesn’t work for you. Other oral erectile dysfunction medications include tadalafil (generic for Cialis), avanafil (Stendra), vardenafil, and chewable Hard Mints. The drug is available in different dosages.

• Sildenafil was first approved by the FDA in 1998.
• It revolutionized erectile dysfunction treatment worldwide.
• Research is ongoing into new potential uses of PDE5 inhibitors.
• The drug has helped millions improve their quality of life.

The appropriate dose depends on factors like age, kidney or liver problems, and other medications being taken.

7.3 Amlodipine

If you’re living with ED symptoms, you’re not alone. Sildenafil can make it easier to get and keep an erection so you can enjoy a fulfilling sex life. Here’s what to remember when taking sildenafil for ED: Take it at least 30 to 60 minutes and no more than four hours before sexual stimulation. Also, avoid high-fat foods or meals that can slow absorption. Take it at least 30 to 60 minutes and no more than four hours before sexual stimulation. While generally considered safe, Viagra can cause side effects, including headaches and low blood pressure. It can also interact negatively with other medications like nitrates. Viagra is a brand-name oral tablet prescribed for erectile dysfunction (ED).