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Sildenafil Coupon - Sildenafil 100mg tablet

sildenafil

Generic Viagra
Used for Erectile Dysfunction
Used for Erectile Dysfunction

Sildenafil (Viagra) is taken by mouth to treat erectile dysfunction (ED). You take it only as needed, typically about an hour before sexual activity (but you can take it anywhere between 30 minutes to 4 hours before sex). Don't take sildenafil (Viagra) more than once a day because doing so can put you at higher risk for serious side effects, such as vision loss or low blood pressure. It's available as a lower-cost generic.

Last reviewed on November 10, 2022
basics-icon

What is Sildenafil (Viagra)?

What is Sildenafil (Viagra) used for?

  • Erectile dysfunction (ED)

How Sildenafil (Viagra) works

Sildenafil (Viagra) is a phosphodiesterase-5 (PDE-5) inhibitor. PDE-5 is a protein in your body that breaks down the molecules that normally cause an erection. When it blocks PDE-5, sildenafil (Viagra) helps an erection occur by allowing certain muscles in the penis to relax and the penis to fill with blood.

Are you looking for information on sildenafil (Revatio) instead?
When does Sildenafil (Viagra) start working?
Time passed since treatment started:
MINUTES
HOURS
DAYS
WEEKS
MONTHS
Initial effect
Full effect

Drug Facts

Common BrandsViagra
Drug ClassPDE-5 inhibitor
Controlled Substance ClassificationNot a controlled medication
Generic StatusLower-cost generic available
AvailabilityPrescription only

More on Sildenafil (Viagra) essentials

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What are the side effects of Sildenafil (Viagra)?

The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.

Common Side Effects

  • Headache (16-28%)
  • Flushing (10-19%)
  • Indigestion (3-17%)
  • Changes in vision or light sensitivity (1-11%)
  • Stuffy nose (4-9%)

Other Side Effects

  • Back pain
  • Dizziness
  • Muscle ache
  • Nausea
  • Rash

Serious Side Effects

Contact your healthcare provider immediately if you experience any of the following.
  • Erection lasting for more than 4 hours
  • Vision loss
  • Dangerously low blood pressure: feeling faint or weak, dizziness, blurry vision, feeling confused
When do Sildenafil (Viagra) possible side effects begin and end?
Time passed since treatment started:
HOURS
DAYS
WEEKS
MONTHS
Headache
Flushing
Abnormal vision
Low blood pressure
Priapism
Seek immediate medical care if you experience this side effect.

Source: DailyMed

The following side effects have also been reported

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

Less common

Bladder pain

burning feeling in the chest or stomach

burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings

cloudy or bloody urine

dizziness

increased frequency of urination

indigestion

pain on urination

stomach upset

tenderness in the stomach area

Rare

Abnormal vision

anxiety

behavior change similar to drunkenness

bleeding of the eye

blurred vision

bone pain

breast enlargement

chest pain

chills

cold sweats

confusion

convulsions (seizures)

cool and pale skin

deafness or hearing loss

decrease in amount of urine or the frequency of urination

decreased vision

difficulty in concentrating

dizziness or lightheadedness, especially when getting up suddenly from a lying or sitting position

double vision

drowsiness

dry eyes

dry mouth

dryness, redness, scaling, or peeling of the skin

excessive hunger

eye pain

fainting or faintness

fast, irregular, or pounding heartbeat

feeling of something in the eye

fever or chills

headache (severe or continuing)

increase in the size of the pupil

increased sweating

increased thirst

lower back or side pain

migraine headache

nausea (severe or continuing)

nervousness

nightmares

numbness of the hands

painful, swollen joints

prolonged, painful erection of penis

redness, burning, or swelling of the eyes

redness, itching, or tearing of the eyes

restless sleep

seeing shades of colors differently than before

sensitivity to light

shakiness

skin lesions with swelling

skin paleness

skin rash, hives, or itching

skin ulcers

slurred speech

sore throat

sudden weakness

swelling of the face, hands, feet, or lower legs

trouble breathing

twitching of the muscles

unusual feeling of burning or stinging of the skin

unusual tiredness or weakness

vision changes

vision loss, temporary

Incidence not known

Blindness

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Aches or pains in the muscles

bloody nose

diarrhea

difficult or labored breathing

flushing

headache

pain or tenderness around the eyes and cheekbones

redness of the skin

sneezing

stomach discomfort following meals

stuffy or runny nose

trouble sleeping

unusually warm skin

Rare

Abdominal or stomach pain

abnormal dreams

anxiety

clumsiness or unsteadiness

cough

diarrhea or stomach cramps (severe or continuing)

difficulty in swallowing

ear pain

increased amount of saliva

increased skin sensitivity

lack of coordination

loss of bladder control

mental depression

nausea

numbness or tingling of the hands, legs, or feet

rectal bleeding

redness or irritation of the tongue

redness, soreness, swelling, or bleeding of the gums

ringing or buzzing in the ears

sensation of motion, usually whirling, either of one's self or of one's surroundings

sexual problems in men (continuing), including failure to experience a sexual orgasm

sleepiness

sores in the mouth and on the lips

tense muscles

trembling and shaking

vomiting

waking to urinate at night

worsening of asthma

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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pros-and-cons

Pros and cons of Sildenafil (Viagra)

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Pros

One of the first-choice medications for treating ED

Taken only when you need it

Can take it 30 minutes to 4 hours before sexual activity

Available as a lower-cost generic

Comes in different strengths, so you and your provider can find which works best for you

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Cons

Can take some time to work, so some planning is needed

Can't be taken if you've had a heart attack or stroke in the past 6 months

Can't be used if you've recently taken nitrates like isosorbide dinitrate (Isordil) or nitroglycerin (Nitrostat)

Higher risk for side effects, such as headaches and flushing, for people age 65 years and older

pharmacist-tips

Pharmacist tips for Sildenafil (Viagra)

pharmacist
  • It's best to take sildenafil (Viagra) about 1 hour before sex, but you can take it anywhere between 30 minutes and 4 hours before you need it.

    • You can take sildenafil (Viagra) with or without food, but it works faster when you take it on an empty stomach.

      • Don't take more than one dose of sildenafil (Viagra) per day. Doing so can raise your risk of serious side effects, such as dangerously low blood pressure and vision loss.

        • If you have an erection for more than 4 hours or if you feel pain with the erection, go to the emergency department or call your provider right away. If left untreated, this can lead to permanent damage to your penis.

          • If your provider prescribes you any blood pressure medications or heart medications, let them know you're taking sildenafil (Viagra). You can't take sildenafil (Viagra) with certain medications, such as isosorbide mononitrate (Monoket) because doing so can cause your blood pressure to drop dangerously low.

            More on Sildenafil (Viagra) tips

            faqs

            Frequently asked questions about Sildenafil (Viagra)

            How long does it take for sildenafil (Viagra) to work?
            Typically, people notice the effects of sildenafil (Viagra) in about a hour after taking the medication. But you can take it anywhere from 30 minutes to 4 hours before sexual activity. Keep in mind that if you happen to take it after a high fat meal (e.g., cheeseburger and fries), it might take the medication a little longer to kick in.
            Can I take sildenafil (Viagra) multiple times a day?
            Don't take more than one dose of sildenafil (Viagra) per day, even if you have sexual activity more than once. Taking more than the recommended dose of sildenafil (Viagra) puts you at risk for serious side effects, such as heart problems, vision problems, or permanent damage to the penis. If you have questions about your dose of sildenafil (Viagra), talk with your provider.
            Can females take sildenafil (Viagra)?
            Sildenafil (Viagra) is only approved by the FDA to treat erectile dysfunction in males. While some studies did look at the use of sildenafil (Viagra) in females, more research is needed. If you're female and have low libido (low sex drive), let your healthcare provider know. Low libido in females can be caused by many different things, such as medications, problems related to mental health, or stress, and your provider can help you try to pinpoint the source. Depending on the root issue, your provider might be able to recommended some ways to help, such as exercise or yoga. There are also FDA-approved medications that might be appropriate for some females, such as Addyi (flibanserin) and Vyleesi (bremelanotide). If you're female, talk with your provider about concerns you have regarding sex or libido.
            How long do the effects of sildenafil (Viagra) last?
            The effects of sildenafil (Viagra) can last up to 8 hours for some people. And some people might have more than one erection during this time. But this doesn't mean that your erection should last this long. In fact, you should get medical care right away if it lasts for longer than 4 hours. This is because erections that last longer than this can lead to tissue damage in your penis.
            Should I take sildenafil (Viagra) if I don't have erectile dysfunction (ED)?
            Sildenafil (Viagra) is only FDA-approved for people with ED. If you haven't been diagnosed with ED by your healthcare provider, don't take sildenafil (Viagra) for sexual performance. This medication can put you at risk for serious side effects, such as dangerously low blood pressure, vision loss, and damage to the penis. If you think you might have ED and want to know if sildenafil (Viagra) is right for you, talk with your healthcare provider.
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            warings-icon

            What are the risks and warnings for Sildenafil (Viagra)?

            Sildenafil (Viagra) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.

            risk-warning

            Heart problems

            • Risk factors: Existing heart condition | Recent heart attack or stroke in past 6 months | High or low blood pressure

              Let your provider know if you have any heart conditions before starting sildenafil (Viagra). Sexual activity, and therefore sildenafil (Viagra), isn't recommended for people with certain heart-related conditions, such as very serious heart failure. Also, sildenafil (Viagra) hasn't been studied in people who have certain conditions, such as recent heart attacks or strokes. If you have a heart condition, ask your provider whether sildenafil (Viagra) is safe for you.

              risk-warning

              Low blood pressure

              • Risk factors: Taking alpha blockers | Taking medications for high blood pressure or chest pain (angina) | Taking ritonavir (Norvir)

                Taking sildenafil (Viagra) with certain medications, such as alpha blockers, medications for high blood pressure, or ritonavir (Norvir) can cause your blood pressure to drop too low. If you take any of these medications, talk with your provider to see if sildenafil (Viagra) is safe for you. If your provider says that you can take sildenafil (Viagra), they might recommend that you check your blood pressure regularly. Be very careful getting up from a sitting or lying down position since this can make you feel dizzy and more likely to fall. You should never take sildenafil (Viagra) when taking nitrate medication for chest pain (angina) because it can cause your blood pressure to drop suddenly to unsafe levels.

                risk-warning

                Prolonged or painful erection (priapism)

                • Risk factors: Medical conditions that affect the penis | Sickle cell anemia | Multiple myeloma | Leukemia

                  Some people who took sildenafil (Viagra) reported having an erection that lasted for more than 4 hours (priapism). This side effect is rare. But if it's not treated in time, it can lead to permanent damage to your penis. You're at higher risk for these side effects if you have other conditions affecting your penis, or if you have sickle cell anemia, multiple myeloma, or leukemia. Get medical help right away if you have an erection that lasts longer than 4 hours or if you feel pain during an erection.

                  risk-warning

                  Vision changes

                  • Risk factors: Age 50 years or older | "Crowded" optic disc | Blood vessel problems in the eye

                    If you suddenly notice changes in your vision in one or both eyes, go to the emergency room or call your provider right away. Although this is rare, sildenafil (Viagra) can cause permanent eye damage. If your provider has told you that you have a "crowded" optic disc, you might be at higher risk for vision changes with sildenafil (Viagra). Tell your provider about your full medical history before taking sildenafil (Viagra).

                    risk-warning

                    Hearing loss

                    Some people who took sildenafil (Viagra) reported experiencing hearing loss. And it sometimes happens along with ringing in the ears (tinnitus) and dizziness. Go to the emergency room or call your provider right away if you notice changes in your hearing in one or both ears.

                    risk-warning

                    Interactions with other medications

                    • Risk factors: Age 65 years or older | Liver problems | Kidney problems | Taking nitrate medications | Taking blood pressure medications | Taking alpha blockers | Taking certain antifungals or antivirals

                      Sildenafil (Viagra) can have serious interactions with certain medications. It's important that you let your provider know about all the medications you're taking before you start sildenafil (Viagra). For example, you shouldn't take sildenafil (Viagra) with nitrate medications because this combination can cause your blood pressure to drop dangerously low. If you're taking other blood pressure medications, your provider might not recommend sildenafil (Viagra) until your blood pressure is under control. Taking sildenafil (Viagra) with medications, like oral azole antifungals and ritonavir (Norvir), can put you at higher risk for side effects, such as headaches, flushing, and vision changes.

                      More on Sildenafil (Viagra) warnings

                      dosage

                      Sildenafil (Viagra) dosage forms

                      tablet
                      Tablet
                      DosageAs low as
                      25mg$669.66 for 10 tablets
                      50mg$1993.17 for 30 tablets
                      100mg$853.72 for 10 tablets

                      Typical dosing for Sildenafil (Viagra)

                      The typical dose is to take 50 mg of sildenafil (Viagra) by mouth, about 1 hour before sex, as needed. The maximum recommended dose is 100 mg. Don't take sildenafil (Viagra) more than once daily (at any dose).

                      More on Sildenafil (Viagra) dosage forms

                      interactions

                      Interactions between Sildenafil (Viagra) and other drugs

                      Sildenafil (Viagra) may interact with certain medications or supplements. Always let your doctor and pharmacist know about any other medications or supplements (including prescribed and over-the-counter medications, vitamins, and dietary or herbal supplements) that you are currently taking. The list below does not include all possible drug interactions with Sildenafil (Viagra). Please note that only the generic name of each medication is listed below.

                      Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.

                      Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

                      Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

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                      contraindications-icon

                      Sildenafil (Viagra) contraindications

                      Contraindications are specific health conditions or situations in which a person should not take a medication due to safety concerns. 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.
                      alternatives

                      What are alternatives to Sildenafil (Viagra)?

                      There are a number of medications that your doctor can prescribe in place of Sildenafil (Viagra). Compare a few possible alternatives below.
                      Sildenafil (Viagra)
                      Used for:
                      • Erectile dysfunction (ED)

                      $18.00 Lowest GoodRx priceView Prices
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                      • Erectile dysfunction

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                      $12.99 Lowest GoodRx priceView Prices
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                      latest news

                      What is the latest news about Sildenafil (Viagra)?

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                      Sildenafil (Viagra) images

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