AN 351 Pill: white, round, 7mm

Sometimes, this happened along with ringing in the ears (tinnitus) and dizziness.

10. What else does sildenafil treat?

You're at higher risk of priapism if you have other conditions affecting your penis. The risk might also be higher if you have sickle cell anemia, multiple myeloma, or leukemia. If you have an erection that lasts longer than 4 hours or a painful erection, get medical help right away. If you suddenly notice changes in your vision in one or both of your eyes, go to the emergency room or call your prescriber right away. Although this is rare, sildenafil (Viagra) might raise the risk of eye damage. It's not clear if these problems are directly related to sildenafil (Viagra).

• Sildenafil tablets are often stored in their original packaging to avoid contamination.
• Use only the amount prescribed; more does not mean better results.
• Sildenafil helps improve erectile function but doesn’t increase libido.
• The tablets are designed for rapid and effective absorption.
• Always inform your doctor about existing health conditions before use.
• Some brands of sildenafil are marketed as "white tablets" for easy recognition.
• The medication can cause a mild increase in blood flow to other body parts.
• Avoid caffeine or heavy meals before taking sildenafil for better results.
• The safety and efficacy of sildenafil are supported by numerous clinical trials.
• Never take expired sildenafil tablets, as their safety can’t be guaranteed.
• Regular blood pressure checks are recommended when using sildenafil long-term.

If you notice any changes in your hearing in one or both of your ears, stop taking this medication and call your prescriber right away. Risk factors: Taking nitrate medications Taking blood pressure medications Taking alpha blockers Taking certain antifungals or antivirals Taking other ED medications at the same time Sildenafil (Viagra) can interact with certain medications. These drug interactions can raise your risk of side effects, including dangerously low blood pressure.

• Sildenafil tablets may have different appearances depending on manufacturer.
• Consult a healthcare professional if unsure about dosing or interactions.
• Sildenafil should be used responsibly to prevent dependence.
• Some users experience a slight tingling sensation after ingestion.
• Generic sildenafil is usually less expensive but equally effective.
• Always buy from trusted sources to avoid counterfeit medication.
• Sildenafil can be used in combination with other ED treatments if advised.
• Certain medical conditions may contraindicate sildenafil use.
• The tablets are commonly available in blister packs for safety.
• Avoid combining sildenafil with grapefruit juice, which can affect metabolism.
• Keep a record of all medications and their effects during treatment.

These include nitroglycerin (Nitrostat) and isosorbide dinitrate (Isordil).

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It can cause your blood pressure to drop too low. Sildenafil (Viagra) can also interact with blood pressure medications.

Storage Condition	Details	Notes
Temperature	Keep below 30°C (86°F)	Avoid excessive heat
Light	Keep away from direct sunlight	Protect from UV rays
Humidity	Store in dry place	Prevent moisture from degrading the tablet
Out of reach	Keep out of children's reach	Safety precaution

Other drug interactions are with certain antifungals sildenafil generic and antivirals like ritonavir (Norvir). They can raise the risk of side effects like headaches and flushing.

Ingredient	Quantity per Tablet	Function	Notes
Sildenafil Citrate	50 mg	Active ingredient	Main component
Microcrystalline Cellulose	20 mg	Filler and binder	Increases tablet stability
Magnesium Stearate	2 mg	Lubricant	Ensures smooth manufacturing
Starch	10 mg	Diluent	Helps with disintegration

It's important to tell your prescriber and pharmacist about all the medications you take and plan to take. They can make sure all your medications are safe to take together and adjust them to keep you safe if needed. The typical dose is 50 mg taken by mouth about 1 hour before sex, as needed.

Why trust our experts?

Sildenafil (Viagra) can cause some serious health issues. Risk factors: History of a heart condition Recent heart attack or stroke in the past 6 months High or low blood pressure Before taking sildenafil (Viagra), tell your prescriber if you have any heart problems. Having sex can be risky for people with certain heart conditions. Because of this, it might not be the best choice for people whose prescriber has told them not to have sex to be safe. In addition, sildenafil (Viagra) hasn't been studied in people who've had a heart attack, stroke, or irregular heart rhythm in the last 6 months.

Dosage for erectile dysfunction (ED)

It also hasn't been studied in people with heart failure or unstable angina (chest pain). If you have a heart problem, talk to your prescriber to find out if this medication is safe for you. Risk factors: Taking alpha blockers Taking medications for high blood pressure or chest pain (angina) Taking ritonavir (Norvir) Sildenafil (Viagra) can cause temporary low blood pressure. But it can for people with health conditions that are sensitive to changes in blood pressure. Keep in mind that your blood pressure can get too low if you take sildenafil (Viagra) with certain medications. You can also take it anywhere from 30 minutes to 4 hours before sex. Your dose might be lower if you're an older adult or if you have liver or kidney problems. Your prescriber can also adjust the dose depending on how it works for you and if you have side effects.

Stronger erections, better sex

Heavy drinking can also actually worsen ED. Let your prescribers and pharmacists know you're taking sildenafil (Viagra). Also tell them about all your other medications. Sildenafil (Viagra) can interact with many medications, including blood pressure medications. It can make your blood pressure drop too low.

Sildenafil Citrate

Your care team can make sure your medications are safe for you to take together. If you have an erection for more than 4 hours or if you feel pain with the erection after taking sildenafil (Viagra), go to the emergency room right away. If left untreated, it can lead to permanent damage to your penis. Be sure to continue to practice safe sex and use a condom. Sildenafil (Viagra) doesn't stop the spread of sexually transmitted diseases (STDs). The maximum recommended dose is 100 mg.

9. Is generic Viagra available without a prescription?

This can potentially lead to permanent vision loss. Before starting sildenafil (Viagra), tell your prescriber about your full medical history. If your eye specialist has told you that you have a "crowded" optic disc, you might be at higher risk of vision changes with this medication. Your prescriber can decide if sildenafil (Viagra) is right for you based on the risks and benefits. Some people who took sildenafil (Viagra) had problems with hearing. GoodRx has partnered with to provide reviews on the different aspects of Sildenafil (Viagra).

• Sildenafil tablets are sometimes prescribed for conditions other than ED.
• The active ingredient aids in relaxing blood vessels in the body.
• White sildenafil tablets are often associated with certain pharmaceutical brands.
• Some countries have strict regulations on sildenafil distribution and sale.
• Sildenafil is typically not recommended for men with severe eyesight diseases.
• Adherence to prescribed guidelines optimizes treatment outcomes.
• The tablets are manufactured with quality control practices to ensure safety.
• Patients should avoid sudden changes in medication or dosage.
• Reactions to sildenafil can be immediate or delayed; monitor closely.
• Lifestyle factors like smoking can influence sildenafil’s effectiveness.
• Educate yourself on proper storage to maintain medication integrity.

Learn more about the effectiveness of Sildenafil (Viagra) based on real life experiences. Based on 14 people taking this medication Based on 28 people taking this medication Based on 34 people who have taken this medication Based on 76 people who have taken this medication Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. If you have any of the following conditions or if any of the following apply to you, let your healthcare provider know because Sildenafil (Viagra) will not be safe for you to take.

Method	Description	Onset of Action	Duration	Notes
Oral Tablet	Swallowed with water	30-60 minutes	4-6 hours	Main administration route
Sublingual	Placed under tongue for faster absorption	15-30 minutes	4-6 hours	Not standard, requires specific formulation
Chewable Tablets	Chewed before swallowing	20-40 minutes	4-6 hours	Sometimes available for quick effect

Taking a nitrate medication for chest pain (angina) Taking guanylate cyclase (GC) stimulators, such as Adempas (riociguat) History of allergic reaction to sildenafil (Revatio) NDC Code(s): 13668-185-05, 13668-185-10, 13668-185-30, 13668-185-51, view more13668-185-90 If you are a consumer or patient please visit this version. See full prescribing information for SILDENAFIL TABLETS.SILDENAFIL tablets, for oral useInitial U.S. Approval: 1998INDICATIONS AND USAGEAdultsSildenafil citrate is a phosphodiesterase-5 (PDE-5) inhibitor indicated for the treatment of pulmonary arterial hypertension (PAH) (World Health Organization [WHO] Group I) in adults to improve exercise ability and delay clinical worsening. (1)DOSAGE AND ADMINISTRATION• Adults: 20 mg three times a day.

• Sildenafil is classified as a prescription medication in most countries.
• Proper diagnosis of ED by a doctor is essential before using sildenafil.
• Sildenafil’s primary function is to facilitate normal erectile response.
• The drug's onset of action can vary among individuals.
• White sildenafil tablets are sometimes found in counterfeit markets.
• It’s advisable to start with the lowest effective dose.
• Some patients report a “refractory” period after taking sildenafil.
• Sildenafil should not be used with certain recreational drugs like poppers.
• The medication’s safety profile is well-understood when used correctly.
• Inform your healthcare provider if you experience prolonged erections.
• Keep an updated record of all medications while using sildenafil.

Dose may be increased based on symptoms and tolerability. (5.8)ADVERSE REACTIONSDRUG INTERACTIONS• Use with strong CYP3A inhibitors: Not recommended. (7, 12.3)• Concomitant PDE-5 inhibitors: Avoid use with Viagra® or other PDE-5 inhibitors.

12.2 Pharmacodynamics

It also includes alpha blockers like tamsulosin (Flomax). You should never take sildenafil (Viagra) when taking a nitrate medication for chest pain (angina). This combination can make your blood pressure drop dangerously low. Tell your prescriber about all your health problems and medications you take. Your prescriber can check that sildenafil (Viagra) is safe for you to take.

Warnings for other groups

If you take this medication, be very careful sildenafil citrate drug getting up after sitting or lying down. This can help prevent you from feeling dizzy from low blood pressure and possibly falling. Risk factors: Medical conditions that affect the penis Sickle cell anemia Multiple myeloma Leukemia It's not common, but some people who took sildenafil (Viagra) have had an erection that lasted more than 4 hours (priapism). If it's not treated in time, it can lead to permanent damage to your penis. Tell your prescriber about your medical conditions. (5.6)Pediatric use information is approved for Viatris Specialty LLC's, REVATIO (sildenafil) tablets. However, due to Viatris Specialty LLC's marketing exclusivity rights, this drug product is not labeled with that information.See 17 for PATIENT COUNSELING INFORMATION and FDA-approved patient labeling.Revised: 5/2026 • Adults: 20 mg three times a day.

What special precautions should I follow?

Priapism: painful erection lasting for more than 4 hours Eye problems: vision loss, can't see as clearly, bloodshot eyes, burning feeling in the eye, eye swelling or pressure Dangerously low blood pressure: feeling faint, weak, or dizzy; blurry vision; racing heart; feeling confused Along with its needed effects, a medicine may cause some unwanted effects. Can take it 30 minutes to 4 hours before sexual activity Comes in different strengths, so you and your prescriber can find which works best for you Can take up to an hour to get its full effect Higher risk of side effects for people 65 years and older Not recommended if you've had a heart attack or stroke in the past 6 months Can't take if you've recently taken nitrates like isosorbide dinitrate (Isordil) or nitroglycerin (Nitrostat) It's best to take sildenafil (Viagra) about 1 hour before sex. But you can also take it anywhere between 30 minutes and 4 hours before you need it. You can take sildenafil (Viagra) with or without food, but it usually works best when taken on an empty stomach. The medication might take a little longer to start working after you eat a high-fat meal (like a cheeseburger with fries).

What are the most common side effects of sildenafil?

Otherwise, it can raise your risk of serious side effects, such as dangerously low blood pressure and vision problems. Ask your prescriber what's a safe amount of alcohol to drink while taking sildenafil (Viagra). They might recommend that you drink less or avoid alcohol altogether. Alcohol can make some side effects worse. This can include dizziness, flushing, and stomach upset. • Use with strong CYP3A inhibitors: Not recommended. Table of Contents FULL PRESCRIBING INFORMATION: CONTENTS*1 INDICATIONS AND USAGE2 DOSAGE AND ADMINISTRATION2.1 Recommended Dosage in Adults3 DOSAGE FORMS AND STRENGTHS4 CONTRAINDICATIONS5 WARNINGS AND PRECAUTIONS5.1 Hypotension5.2 Worsening Pulmonary Vascular Occlusive Disease5.3 Epistaxis5.4 Visual Loss5.5 Hearing Loss5.6 Combination with Other PDE-5 Inhibitors5.7 Priapism5.8 Vaso-occlusive Crisis in Patients with Pulmonary Hypertension Secondary to Sickle Cell Disease6 ADVERSE REACTIONS6.1 Clinical Trials Experience6.2 Postmarketing Experience7 DRUG INTERACTIONS8 USE IN SPECIFIC POPULATIONS8.1 Pregnancy8.2 Lactation8.4 Pediatric Use8.5 Geriatric Use8.6 Patients with Hepatic Impairment8.7 Patients with Renal Impairment10 OVERDOSAGE11 DESCRIPTION12 CLINICAL PHARMACOLOGY12.1 Mechanism of Action12.2 Pharmacodynamics12.3 Pharmacokinetics13 NONCLINICAL TOXICOLOGY13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility14 CLINICAL STUDIES16 HOW SUPPLIED/STORAGE AND HANDLING17 PATIENT COUNSELING INFORMATION*Sections or subsections omitted from the full prescribing information are not listed.