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.
Sildenafil is available in 25mg, 50mg, and 100mg strengths.
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.
Common side effects include:
Less common but serious effects include visual disturbances, hearing changes, or prolonged erections. Seek medical attention if severe or persistent side effects occur.
Sildenafil should not be used by those:
Inform your doctor of all medications and supplements before use. Interactions may occur with:
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.
Sildenafil is available by prescription only in the UK.
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ShareSildenafil is available without a prescription in the UK from 21 February 2025.
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Sildenafil in the UK
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Viagra Connect is an effective treatment for erectile dysfunction (ED). Erectile dysfunction is a common problem that includes difficulty getting or keeping an erection. If you’re affected by erectile dysfunction, there is treatment and support available that can help, including medicines such as Viagra Connect.
If you have a low libido, understanding the cause of this and getting help to increase your libido, may change the way you think and feel about sex. There is support available that may help, including talking to a professional such as a psychologist or counsellor. Your doctor may be able to refer you for counselling, or you can.
Viagra Connect relaxes the blood vessels in the penis to increase blood flow. This means that you can get an erection when you’re sexually aroused. After sexual activity, your erection will go away as it normally would.
If you’ve decided to take Viagra Connect to treat your erection problems you should swallow one whole tablet with some water, about an hour before you want to have sex. Don’t take more than one tablet a day.,
Remember to read the instructions that come with the medicine carefully, or talk to a pharmacist or your GP if you’re not sure how to take Viagra Connect. They’ll be able to give you more information and support.
Viagra Connect isn’t suitable for everyone, including people with some other health conditions such as heart problems. Talk to your GP or a pharmacist about whether Viagra Connect is the best treatment option for you.
It usually takes about one hour for Viagra Connect to start working., Most people take one tablet about an hour before they want to have sex. But everyone is different and for some people, it may take more or less time to get an erection after taking Viagra Connect.
After sex, your erection should go away normally. If it doesn't, contact your GP, a pharmacist, or.
Once you've taken Viagra Connect, it will stay active for up to four hours.
Read More What Viagra Connect is How to take Viagra Connect questions to make sure Viagra Connect is a suitable treatment for you.Viagra Connect side effects happen in around 1% to 1 in 3 men taking medicine for erectile dysfunction. Most of these side effects are benign, though more serious side effects can be heard in more than one case in 500 people. Some rare side effects include:
If you experience any of these side effects, or if a side effect occurs, talk to your GP, your pharmacist, or check in with you that Viagra Connect is suitable for you.
If you don't remember to take Viagra Connect, don’t take any new problems at once, or take more to treat your erection problems, refer you to a doctor.
No, Viagra Connect shouldn’t be taken with medicines that you’re taking such as nitrates, β-nitroxine medicines, or alpha-blockers. You can take Viagra Connect, or see a doctor for other medicines. There may be an alternative medicine such as some erectile dysfunction drugs.
If you have any of the conditions listed above with Viagra Connect, or are thinking about taking any other types of Viagra Connect tablets, or are taking any other medicines, or your erection problems haveneapolis you can try reading the tablets first, or your doctor may think it’s treating your erection problems more well, or you can contact a doctor, or your doctor may refer you to a specialist such as a GP or psychologist.
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:
More severe side effects include:
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.
Show MoreBisdom Conservation - Viagra will beife published in the February 2020 issue ofThe New England Journal of Medicineis now out in a limited English language edition. The new dose version will be published in the March 2020 issue.NoMoreViagraViagra sales viagra sales viagra increase Viagra has been shown to cause some mild side effects. Talk to your health care provider if you began to experience any of these uncommon, mild side effects while taking Viagra.HeadacheHeadacheCongestionHeartburnHeart health health should be your priority. Taking Viagra can cause potentially severe, life-threatening, and sometimes life-threatening, side effects such as chest pain or fainting. Viagra should not be taken by individuals with a known cardiovascular condition or those taking medications that can cause fainting or sudden loss of vision in one or both eyes.As with all prescription medications, inform your doctor if you have any medical conditions, especially the following:
Viagra can interact with the following medications:
About VIAGRA
VIAGRA (Viagra) is an oral medication that helps men with erectile dysfunction. VIAGRA contains sildenafil citrate, which helps men with ED achieve and maintain an erection.
In New Zealand, VIAGRA is also sold in a variety of countries, including Australia, New Zealand, and India.
VIAGRA works by helping the blood vessels in the penis to relax and widen, allowing blood to flow into the penis when you are sexually aroused. The increased blood flow helps men achieve and maintain an erection.
The recommended dose is one tablet taken 30 to 60 minutes before sexual activity, and one dose is advised if the patient has severe heart or liver problems. If the patient does not have any sexual arousal disorder, a dose should not be exceeded. The maximum recommended dose is one tablet.
For maximum effectiveness and safety, the patient should be sexually aroused for 5 to 10 minutes. The patient should not exceed this number.
In addition to the recommended dose, a patient should also be aware of other factors to consider. The patient should also be aware that VIAGRA may cause dizziness or lightheadedness.
The recommended dosage for this medication is one tablet taken 30 to 60 minutes before sexual activity.
Some common side effects of VIAGRA are headache, facial flushing, nasal congestion, and visual disturbance. If any of these severe or persistent side effects occur, contact your doctor immediately.
Do not use VIAGRA if you have any of the following conditions:
Some drugs that can interact with VIAGRA include:
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