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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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How It Works

Sildenafil works by relaxing the blood vessels in the penis, allowing for increased blood flow and the ability to achieve an erection when sexually stimulated.

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.

aspbuilding can be challenging, but it is not uncommon for you to experience canpline sexual dysfunction when diagnosed and have difficulty achieving or maintaining an erection. If you experience any changes in your erectile dysfunction symptoms, such as reduced libido, difficulty achieving an erection, or reduced natural erectile dysfunction ability, contact your health care provider immediately.caring to know if you are using any form of birth control can help reduce risk of unwanted side effects. As with any type of birth control, inform your health care provider of any prescription and non-prescription medications you are taking.Cardiovascular disease can be a cause for concern. However, Viagra is generally not recommended for use in patients with a history of heart attack or stroke.

ennisHealthcare provider:If you have aCondoms problem, contact your provider. Erectile dysfunction can be a symptom of a more serious health condition, such as an enlarged prostate, high blood pressure, or heart failure.

Before using Viagra, inform your health care provider of any medical conditions or allergies you may have, as well as any WARNINGS or PRECAUTIONS you may have Legislature.

In addition, let your doctor know if you are pregnant or plan to become pregnant. Viagra can cause a drop in blood pressure which can be harmful. Viagra may also cause dizziness or drowsiness. Therefore, do not drive or do activities that require alertness until you are able to perform these potentially dangerous activities.

In addition, let your doctor know if you are or have ever had an erection that lasted more than 4 hours. Viagra can cause a severe drop in blood pressure which can be harmful. Viagra can also cause muscle pain or drowsiness during sexual activity. Therefore, do not engage in sexual activity with any of your family members who are aware that you may be experiencing muscle pain or drowsiness.

In addition, let your doctor know if you are and are not sure whether you are takingachipol® (levonorgestrel) or whether you are takingibuprofen® (ibuprofen derivative)

accidents can cause mild to moderate drowsiness

As with all prescription medications, inform your doctor of all medications, prescription and non-prescription medications, vitamins, and nutritional supplements you are taking.

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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What is Viagra?

Viagra is a prescription medication used to treat erectile dysfunction (ED) in men.

Viagra is taken orally, usually about 30 minutes to 1 hour before sexual activity.

It works by relaxing the blood vessels in your penis, allowing blood to flow into the penis when you get sexually excited, and causing an erection.

Viagra does not protect against sexually transmitted diseases, such as HIV.

ED medication can make you more likely to have painful erections, easy to treat, and painful during sex.

Viagra can help prevent erectile dysfunction from spreading to others.

ED medication can make it easier for you to get an erection if you have ED.

ED medication can make it easier for you to have sex with your partner.

Viagra can help protect against sexually transmitted diseases, such as HIV.

Viagra is used to treat a condition that affects the blood vessels in your penis, called benign prostatic hyperplasia (BPH).

BPH occurs when the prostate gland is enlarged and needs to stay healthy to grow. BPH can cause an erection that can last about four to five hours.

Viagra is used to treat a condition that affects the blood vessels in your penis, called pulmonary arterial hypertension (PAH).

BPH occurs when the blood vessels in your penis become weak, narrow, or take a different shape than they should.

Viagra is used to treat a condition that affects the blood vessels in your penis, called pulmonary arterial hyperplasia (PAH).

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