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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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More from Around the UK

Men experiencing erectile dysfunction (ED) should consult their GP, as treatments may not be suitable for their specific needs.

The good:

  • Viagrais the most popular medication for treating ED, but it requires a prescription to work.
  • Cialiswork similarly, but work by increasing blood flow to the penis, helping to achieve and maintain an erection.
  • Lust to aroused Partners may experience an increase in erections when they engage in sexual activity, usually at the same time.
  • Maintaining an erection during sexual activity may be improved by using sexual stimulation devices or by using psychological support.

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.

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Avoid alcohol while taking Viagra, as it can increase the risk of side effects like drowsiness or dizziness.

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Considerable savings can be achieved by paying only as little as $0.04 per 1mg tablet during sex as recommended by your healthcare provider. Viagra is only taken once per day, and this price change is not required.

Once-a day supply is $4.00 per tablet.

Consider ordering from from a mail order pharmacy before using as the price may be higher. Viagra is typically shipped and billed as follows:

  • $4.00 per tablet
  • $8.00 per tablet
  • $24.00 per tablet
  • $32.00 per tablet

Generics are also available, but these products are typically more affordable than the original formulation. These can be ordered through the pharmacy, or by calling 800. thankfully we have all options of ordering these from asda.

Use Viagra exactly as it was prescribed for you. Viagra is intended for male patients only.

There are some lifestyle changes you can make to manage your symptoms while taking Viagra.

  • Maintain a healthy weight
  • Avoid alcohol with Viagra, as it can heighten the risk of side effects
  • Maintaining a healthy weight may lessen the likelihood of experiencing adverse reactions
  • Reduce stress levels with Viagra, as it can cause drowsiness or dizziness
  • Use nitrate medication
  • Use a healthy diet

If you experience any side effects, seek medical attention immediately.

These include heart disease, low blood pressure, or a recent stroke or heart attack.

In addition, let your doctor know if you are taking any other medicines, including any that you have been prescribed by your doctor.

There are some lifestyle changes you can make to manage your symptoms while taking Viagra while using Viagra.

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.

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In addition, let your doctor know if you are taking aardenacin or flibanserin. If you are taking aardenacin, tell your doctor before starting treatment with Viagra.

In addition, let your doctor know if you are pregnant or plan to become pregnant. Viagra can affect the developing baby if you take it during pregnancy. If you become pregnant, talk to your doctor about managing your pregnant face for the child for the rest of her life.

In addition, let your doctor know if you have ever had an allergic reaction to Viagra or any other medicine. If you experience an allergic reaction, stop taking Viagra and call your doctor.

In addition, let your doctor know if you have kidney or liver disease, heart disease, diabetes, or a family history of heart disease before starting treatment with Viagra.

In addition, let your doctor know if you aregay or cis before starting treatment with Viagra.

In addition, let your doctor know if you are having surgery or any chronic medical conditions before starting treatment with Viagra.

In addition, let your doctor know if you are taking or are planning to take any other medications, including recreational drugs.

In addition, let your doctor know if you are taking or are taking sexual prescription or nonprescription medications for any health condition.

In addition, let your doctor know if you are taking or are taking other prescription or nonprescription medications.

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