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Generic Viagra (sildenafil) is prescribed to treat erectile dysfunction (ED), the inability to get or maintain an erection, as a result of impotence. ED is common in men, characterized by complete or intermittent inability to get and maintain an erection for sexual activity. Viagra is not for use by women or children.
Generic Viagra requires a prescription. You can get a prescription for generic Viagra (sildenafil) at Blink Health, including online doctor visit and refills. All generic medications sold through Blink Health Pharmacy are FDA-approved.
How Viagra works
Viagra is a phosphodiesterase 5 (PDE5) inhibitor, increasing blood flow to the penis during sexual stimulation to help achieve erection. Viagra does not cure ED, increase sexual desire, prevent pregnancy, or protect against sexually transmitted diseases (including HIV).
Viagra is most effective if taken 1 hour before sexual activity, but can be taken up to 4 hours prior. Do not take more than one dose every 24 hours. People with certain health conditions may need to limit Viagra doses; discuss with your doctor how often to take it.
Viagra vs Sildenafil
Viagra and sildenafil are medically the same, containing the same active ingredient sildenafil. The main difference is price where generic sildenafil is cheaper than branded Viagra (sold by Pfizer). Also, sildenafil is available in 20mg dosage. Viagra comes in diamond shaped blue pills and sildenafil comes in white or blue tablets. Both are equally effective for the treatment of erectile dysfunction. Common side effects of Viagra
Muscle aches or back pain
Vision changes (especially blue/green color vision) or light sensitivity
Feeling warm or flushed
Numbness in arms, hands, feet, or legs
Serious side effects include:
Sudden vision loss
Sudden full or partial hearing loss
Ringing in the ears
Dizziness, lightheadedness, or fainting
Chest pain or shortness of breath
Painful erection lasting over 4 hours (priapism)
Burning/itching during urination
Viagra dosage information
Viagra pills come in dosages:
Your doctor may start you at a lower dose, monitor for side effects and effectiveness, and increase dosage as appropriate.
Viagra was the first PDE5 inhibitor approved to treat ED. Pfizer originally developed it to treat hypertension and angina pectoris, but clinical trials revealed that it was more effective at inducing erection. It was FDA approved in 1998, and by 2008 hit almost $2 billion in sales.
Viagra or Cialis, How to Choose?
When selecting between Viagra and Cialis, a major difference that factors in the patient's lifestyle is how long each drug takes to work and how long the effects last. Read more.
How Long Will I Have to Take My ED Medication?
Depending on your health history, your lifestyle habits may determine how long you need an ED prescription. Read more.
How to Take Viagra
Before taking generic Viagra (sildenafil), be sure you fully understand your licensed medical professional's instructions for using it. In addition, when you receive your generic Viagra, read the Patient Information Leaflet that comes with it. A licensed medical professional can answer any questions you have after reading this leaflet.
To treat erectile dysfunction (ED), take generic Viagra orally as directed by your licensed medical professional, usually on an as-needed basis. You should take generic Viagra at least 30 minutes, but no more than 4 hours, before sexual activity (1 hour before is the most effective). Do not take it more than once daily.
Keep in mind: Consuming a high-fat meal can delay how quickly the medication begins to work.
The dosage is based on your medical condition, response to treatment, and other medications you may be taking. Be sure to tell your clinician or pharmacist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
If your condition does not improve after using generic Viagra, talk to a licensed medical professional.
Viagra Side Effects
It's important to be aware of possible side effects before you start taking a medication.
Here are the listed side effects for this drug:
Dizziness, headache, flushing, or stomach upset may occur. Vision changes such as increased sensitivity to light, blurred vision, or trouble telling blue and green colors apart may also occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Sexual activity may put extra strain on your heart, especially if you have heart problems. If you have heart problems and experience any of these serious side effects while having sex, stop and get medical help right away: severe dizziness, fainting, chest/jaw/left arm pain, nausea.
Rarely, sudden decreased vision, including permanent blindness, in one or both eyes (NAION) may occur. If this serious problem occurs, stop taking sildenafil and get medical help right away. You have a slightly greater chance of developing NAION if you have heart disease, diabetes, high cholesterol, certain other eye problems ('crowded disk'), high blood pressure, if you are over 50, or if you smoke.
Rarely, a sudden decrease or loss of hearing, sometimes with ringing in the ears and dizziness, may occur. Stop taking sildenafil and get medical help right away if these effects occur.
In the rare event you have a painful or prolonged erection lasting 4 or more hours, stop using this drug and get medical help right away, or permanent problems could occur.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
It's also important to be aware of precautions and warnings around taking this medication.
Before taking sildenafil, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: heart problems (such as heart attack or life-threatening irregular heartbeat in the past 6 months, chest pain/angina, heart failure), stroke in the past 6 months, kidney disease, liver disease, high or low blood pressure, a severe loss of body water (dehydration), penis conditions (such as angulation, fibrosis/scarring, Peyronie's disease), history of painful/prolonged erection (priapism), conditions that may increase the risk of priapism (such as sickle cell anemia, leukemia, multiple myeloma), eye problems (such as retinitis pigmentosa, sudden decreased vision, NAION).
This drug may make you dizzy or cause vision problems. Alcohol or marijuana (cannabis) can make you more dizzy. Do not drive, use machinery, or do anything that needs alertness or clear vision until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
During pregnancy, sildenafil should be used only when clearly needed. Since high blood pressure in the lungs is a serious condition that can harm both a pregnant woman and her unborn baby, do not stop this medication unless directed by your doctor. If you are planning pregnancy, become pregnant, or think you may be pregnant, talk to your doctor about the benefits and risks of using sildenafil.
This medication passes into breast milk in small amounts. Consult your doctor before breast-feeding.
Store generic Viagra at room temperature away from light and moisture. Do not store in the bathroom. Keep generic Viagra (and all medications) away from children and pets.
If your generic Viagra has expired or is no longer needed, be sure to discard it correctly. You can ask your pharmacist or local waste disposal company how you should dispose of your generic Viagra. Do not flush it down the toilet or pour it into a drain unless instructed to do so.
Viagra Drug Interactions
If you take other prescription or nonprescription drugs (including herbal supplements), interactions may take place that change how your medications work or that increase your risk for serious side effects. These are not all of the possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your clinician and pharmacist. Do not start, stop, or change the dosage of any medicines without your licensed medical professional's approval.
A product that may interact with this drug is: riociguat.
When used with nitrates, sildenafil can cause a serious drop in your blood pressure. This can lead to dizziness, fainting, and, rarely, heart attack or stroke. Do not use sildenafil with any of the following: certain drugs used to treat chest pain/angina (nitrates such as nitroglycerin, isosorbide), recreational drugs called 'poppers' containing amyl nitrate, amyl nitrite, or butyl nitrite.
If you are taking an alpha blocker medication (such as doxazosin, tamsulosin) to treat an enlarged prostate/BPH or high blood pressure, at the same time you're taking generic Viagra, your blood pressure may get too low which can lead to dizziness or fainting. Your doctor may start treatment with a lower dose of sildenafil to minimize your risk of low blood pressure.
Other medications can affect the removal of generic Viagra from your body, which can affect how it works. Examples of these medications include azole antifungals (such as itraconazole, ketoconazole), macrolide antibiotics (such as clarithromycin, erythromycin), HIV protease inhibitors (such as ritonavir, saquinavir), hepatitis C virus protease inhibitors (such as boceprevir, telaprevir), mifepristone, rifampin, among others.
Do not take this drug with any other product that contains sildenafil or other similar medications that treat erectile dysfunction (ED) or pulmonary hypertension (such as tadalafil or vardenafil).
Symptoms of generic Viagra overdose may include severe dizziness, fainting, painful/prolonged erection.
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.
Do not share this medication with others.
Blink Health will always honor the price reflected at the time you purchased your medication. Your final price is based on the medication you pick up at the pharmacy. If you pick up a different form, dosage, or quantity, you will be charged or credited the difference. Blink Health reserves the right to cancel a transaction and refund you if the underlying cost of the prescription drug changes significantly after you have purchased your medication. Blink Health reserves the right to change its prescription drug prices in real time based on supply and demand trends and other factors. Any savings claims made by Blink are based on U.S. retail prices without prescription drug coverage. *Retail Prices (Cash Prices) vary among pharmacies. The Retail Prices displayed are estimates based on multiple sources, including price lists, historical claims and data provided by pharmacies. Our Price Match Guarantee covers generic drugs. Additional conditions apply. For more details visit our Price Match page. †Delivery may be subject to delays. Free shipping is available for most orders through USPS first class shipping. If an order is placed, or if a delivery period falls, on a USPS holiday, the delivery time window will be extended by additional days, as applicable. No deliveries on Sunday or USPS holidays. Home delivery orders ship from a licensed, US based pharmacy after a valid prescription has been received. No home delivery orders will ship without a valid prescription written by a prescriber. Blink Health's pharmacy team will transfer prescriptions from other pharmacies or prescribers. Home delivery orders may be subject to delays if those pharmacies or prescribers do not immediately respond to requests to transfer prescriptions to Blink Health's pharmacy team. ‡Promotional offer excludes opioids, E.D. (i.e. sildenafil, tadalafil and generics Viagra and Cialis) and hair loss medications (i.e. finasteride, generic Propecia), and any orders that include online doctor visits for E.D., hair loss, birth control, cold sores, high cholesterol or acid reflux. Cannot be combined with other offers. Blink Health is not sponsored by or affiliated with any of the pharmacies identified. The pharmacy trademarks and logos above are the property of their respective owners. Blink Health is not offering advice, recommending or endorsing any specific prescription drug, pharmacy or other information. Please seek medical advice before starting, changing or terminating any medication or prescription.
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