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Sildenafil citrate, commonly known by the brand name, is a prescription-only medicine used to treat erectile dysfunction (ED) in adult men. It works by improving blood flow to the penis, helping to achieve and maintain an erection during sexual activity.

Dosage and Administration

Sildenafil is available in 25mg, 50mg, and 100mg strengths.

  • The usual starting dose is 50mg, taken approximately one hour before sexual activity.
  • Dosage can be adjusted depending on individual response and tolerability.
  • Take only one tablet in 24 hours, with or without food.
  • Avoid grapefruit juice, as it can increase the risk of side effects.
  • A high-fat meal may delay onset of action.

Effectiveness

Sildenafil has been shown to be effective in up to 80% of men with ED, with effects typically noticeable within 30 to 60 minutes, and lasting for up to 4–5 hours.

Side Effects

Common side effects include:

  • Headache
  • Flushing
  • Nasal congestion
  • Indigestion

Less common but serious effects include visual disturbances, hearing changes, or prolonged erections. Seek medical attention if severe or persistent side effects occur.

Contraindications

Sildenafil should not be used by those:

  • Taking nitrates for chest pain
  • With severe heart or liver conditions
  • Under 18 years of age
  • With certain medication interactions (e.g. alpha-blockers, antifungals, antibiotics)

Interactions

Inform your doctor of all medications and supplements before use. Interactions may occur with:

  • Nitrates
  • Alpha-blockers
  • Some antibiotics and antifungal medicines

Alcohol and Heart Conditions

Avoid excessive alcohol while taking sildenafil, as it can lower blood pressure and increase side effect risk. Use with caution if you have any heart-related conditions.

Availability and Cost

Sildenafil is available by prescription only in the UK.

  • Generic versions are more affordable than branded Viagra.
  • Supplied by licensed UK pharmacies such as Online Chemist.
  • Avoid counterfeit products from unregulated websites.

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Side Effects from Sildenafil (Viagra)

... Side effects have been reported with sildenafil treatment, include:

  • Mental problems such as nausea, diarrhea, or dizziness.

....

Allergic reactions, including rashes, and itching, and swelling, shortness of breath, and blurred vision. Sildenafil and tadalafil, may interact with other medications, e.g. alpha-blockers, alpha-blockers, antifungals, and side effect-reliever medications.

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Viagra has been shown to cause some mild side effects. Talk to your health care provider if these do not go away within a few days. If you begin to experience more serious reactions, seek medical attention immediately.

Common side effects reported from Viagra use include:

  • Headache
  • Heartburn
  • Congestion
  • Nasal bleeding (bloody nose)
  • Nausea
  • Diarrhea
  • Muscle aches or pains
  • Flushing
  • Facial pain or tenderness
  • Vision changes
  • Light sensitivity

More severe side effects include:

  • Painful erections or erections that last longer than 4 hours
  • Sudden loss of vision
  • Sudden loss of hearing
  • Ringing in the ears
  • Chest pain
  • Shortness of breath
  • Painful urination
  • Increased urination frequency
  • Fainting
  • Dizziness
  • Skin rash
  • Hives
  • Facial swelling

If you experience any of these side effects, seek medical attention immediately. These are symptoms of a severe adverse reaction to this medication that require immediate treatment.

As with all prescription medications, inform your doctor of any medical conditions you currently manage. Tell them about any and all medications, prescription drugs, and supplements you are taking before starting treatment with Viagra. Viagra can interact with bodily substances, causing potentially serious adverse reactions.

Specifically, you should inform your health care provider of any nitrate medication you are taking. Remember to mention any herbal products you use, especially St. John’s wort.

In addition, let your doctor know if you have recently had heart surgery or experience chest pain during sex. If you experience any changes in your heartbeat or chest pain during sex, contact your health care provider immediately.

Tell them if you have any heart problems, including an interest in getting treatment or if you currently take nitrates while also taking metapf HUMID SIDE EFFECTS ON YOUR VIAGRA Side effects can include:
  • Sudden vision loss
  • Sudden hearing decrease
  • Sudden changes in the balance of blood cells
  • Muscle aches
  • Back pain
  • Stomach pain
  • Unusual vaginal bleeding

If you experience any of the above symptoms, contact your health care provider immediately.

Warnings and Precautions

Signs of a severe adverse reaction with Viagra require warning and caution for clinicalextremely sensitive reactions.uku/guidelines.gov updates.

This medication can cause serious allergic reactions, including anaphylaxis, which can be life-threatening. If you experience anaphylaxis, seek medical attention immediately.

Precautions

This medication is not indicated for use in women. Your doctor should have you evaluated by a doctor before you start this medication.

Viagra can cause your blood pressure to drop to a dangerous level if you have high blood pressure. Viagra can also cause you to feel lightheaded, a feeling of faint or faint, especially if you have heart problems. If you experience any of the above side effects, contact your health care provider immediately.

Viagra can affect how well it works. If you experience an erection that lasts longer than 4 hours, seek medical attention immediately.

Viagra has been shown to cause some mild side effects. Talk to your health care provider if these do not go away within a few days. If you begin to experience more serious reactions, seek medical attention immediately.

Common side effects reported from Viagra use include:

  • Headache
  • Heartburn
  • Congestion
  • Nasal bleeding (bloody nose)
  • Nausea
  • Diarrhea
  • Muscle aches or pains
  • Flushing
  • Facial pain or tenderness
  • Vision changes
  • Light sensitivity

More severe side effects include:

  • Painful erections or erections that last longer than 4 hours
  • Sudden loss of vision
  • Sudden loss of hearing
  • Ringing in the ears
  • Chest pain
  • Shortness of breath
  • Painful urination
  • Increased urination frequency
  • Fainting
  • Dizziness
  • Skin rash
  • Hives
  • Facial swelling

If you experience any of these side effects, seek medical attention immediately. These are symptoms of a severe adverse reaction to this medication that require immediate treatment.

As with all prescription medications, inform your doctor of any medical conditions you currently manage. Tell them about any and all medications, prescription drugs, and supplements you are taking before starting treatment with Viagra. Viagra can interact with bodily substances, causing potentially serious adverse reactions.

Specifically, you should inform your health care provider of any nitrate medication you are taking. Remember to mention any herbal products you use, especially St. John’s wort.

In addition, let your doctor know if you have recently had heart surgery or experience chest pain during sex. If you experience any changes in your heartbeat or chest pain during sex, contact your health care provider immediately.

asthma is a safe alternative to Viagra

What is Viagra?

Viagra is a prescription medication used to treat erectile dysfunction (ED). It works by increasing blood flow to the penis.

Viagra works by increasing blood flow to the penis during sexual stimulation.

Viagra does not improve sexual desire or lead to an erection if you do not have ED. Viagra only helps treat ED based on your medical history. Do not take Viagra if you are not sure. Viagra may cause side effects, including:

  • Restlessness
  • Upset stomach
  • Facial flushing
  • Sensitivity to light

These effects are not permanent. Viagra does not provide a permanent solution.

Viagra does not cause a unfounded medical consultation. You will only need it when you are sexually aroused.

If you experience any side effects, such as headaches, dizziness, or flushing, call your doctor or get a real medical consultation.

Watch this video to see more information on Viagra below.

How does Viagra help with erectile dysfunction?

Viagra helps men with erectile dysfunction (ED) see and achieve an erection. Erectile dysfunction is when a man cannot get and/or keep an erection long enough to perform sexual activity.

Viagra works by helping to increase the blood flow to the penis.

  • Lower back pain
  • Severe dizziness

How can I inform my health care provider about Viagra?

Let your health care provider know if you have ever taken Viagra or any other erectile dysfunction drug. Do not take Viagra if you are not using any medicines, including Viagra.

Viagra (Sildenafil)

Viagra (Sildenafil) is a prescription medicine used to treat erectile dysfunction (impotence). It works by relaxing the blood vessels in your penis, allowing blood to flow into your penis when you get sexually excited.

How Does Viagra Work?

Viagra (Sildenafil) works by increasing blood flow to the penis, helping men to get and keep an erection. This medication can be taken orally, and it’s also available in tablet form.

It can also be taken with or without food. Viagra should be taken about an hour before sexual activity. However, it’s important to note that Viagra can have side effects. If you experience any of the following, contact your healthcare professional:

If you have any medical conditions or are taking any medications, such as nitrate-based medications for chest pain or heart disease, or prescription medications, such as amyl nitrate (poppers), nitroglycerin (diuretics), or isosorbide mononitrate (imidazole), please inform your doctor or pharmacist. This is because Viagra may have interactions with certain medications.