Viagra(Sildenafil )Citrate Tablets CAS:139755-83-2

    Believe it or not, Viagra (sildenafil) is one of the most popular drugs in the U.S. The blue, diamond-shaped pill is known for its ability to help men suffering from erectile dysfunction (ED).

    Viagra (sildenafil) is a drug commonly used to treat ED, a condition that over 150 million people worldwide are estimated to be affected by. While the brand name prescription comes in a blue pill form, generic sildenafil comes in a white pill.

    Though generic sildenafil can also be used to treat pulmonary arterial hypertension, only Revatio-equivalent sildenafil is approved by the FDA for this particular condition. Viagra's generic for erectile dysfunction is prescribed in 25 mg, 50 mg, and 100 mg tablets.

    Viagra was the first drug to become available as a treatment for erectile dysfunction, being licensed in 1998. Originally tested as a treatment for heart problems, it has also been used in treating high blood pressure (under the name Revatio) and altitude sickness.

 

 

 

    When you're aroused, your body releases nitric oxide down below - a molecule that triggers the events responsible for an erection. But an enzyme (protein) called phosphodiesterase type 5 (PDE5) breaks down certain messengers involved in this process, preventing the desired effect.

    While there are a number of reasons why someone may have difficulty getting or maintaining an erection, PDE5 inhibitors that block this enzyme, like Viagra, are often used to help.

    Viagra for men and similar ED drugs like Cialis (tadalafil) and Levitra (vardenafil) work by helping to relax muscles and arteries inside the penis, which helps more blood reach the penis. When aroused - and only when aroused - the combination of relaxation and increased blood flow helps fill the penis with blood. That's how you're able to achieve an erection.

    After taking Viagra, the medication quickly enters your system and starts working after about an hour, but you can take it anywhere from 30 minutes to 4 hours before sexual activity.

    This means that you'll want to take it about an hour before sexual activity, but you've got a wider window of time for when you can still get a benefit. However, as mentioned above, it only works if you're aroused.

    You may be wondering if there are ways to help the medication work even faster, like chewing or crushing the tablet and dissolving it under your tongue. However, it isn't made to work that way and should be swallowed whole.

 

    The effects of Viagra can last 4 to 8 hours, depending on the individual person and the dose you take. In fact, some people may experience more than one erection during this time. However, just because Viagra can stay in your body for up to 8 hours doesn't mean your erection should last that long.

    In fact, if your erection lasts longer than 4 hours - even if it's not painful - seek medical help right away. An erection lasting longer than 4 hours is known as priapism, a condition that can cause permanent damage to the tissue that helps you become erect.

    If you have sickle cell anemia, multiple myeloma, leukemia, or certain penile deformities (like Peyronie's disease), you're more likely to have a prolonged erection.

    Here are a couple tips for taking Viagra safely and effectively:

    ●Follow safe, recommended doses.
    The standard recommended dose of Viagra for treating ED is 50 mg, but your doctor could prescribe anywhere from 25 mg to 100 mg.

Viagra is only recommended to be taken once per day. This means that if you're planning on engaging in sexual activity more than once throughout the day, you shouldn't take a pill every time. And if you take a pill and it doesn't work for you - don't double up and take another one. Exceeding the recommended Viagra dosage can put you at risk for serious effects.

    Because Viagra can affect other parts of the body, such as the heart and lungs, it's important to stick to the dose and instructions your doctor provides. And if your prescribed dose isn't working for you, they may make adjustments to find one that works.

    ●Take it on an empty stomach.
    Although it can be taken with or without food, Viagra tends to work best when taken on an empty stomach. So, to maximize its effects, try to take it separately from meals.

    But if you do end up eating beforehand, avoid taking it with a high-fat meal since this can affect how quickly the medication is absorbed - and how fast it kicks in.

    Just as there are a number of reasons why someone experiences erectile dysfunction, the same goes for premature ejaculation. And while medications like Viagra can help your erection stay firm, it usually isn't the first choice for preventing ejaculation.

    However, the two issues often happen together, so your provider may recommend Viagra to help with any underlying erectile dysfunction. As a result of treatment, you may see some improvement with how long you last.

    But if not, your provider may have you try behavioral methods (e.g., practicing ejaculation control), counseling, or other medications - like numbing creams or antidepressants - to help.

Trade names	Viagra,Sildenafil,Revatio
CAS	139755-83-2
Molar mass	474.6
Formula	C22H30N6O4S
Purity	Above 98%
Apprarance	100mg*100

 

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     The standard recommended starting dose for sildenafil (Viagra) for most adults is 50mg taken as needed, approximately 1 hour before sexual activity. However, the dose can be adjusted based on individual response and tolerance, with the maximum recommended dose being 100mg per day.

    It's important to follow your doctor's prescription and recommendations regarding dosage. Taking 100mg of sildenafil without a doctor's guidance might increase the risk of side effects and complications.

    Here are some considerations:

    Effectiveness: For many individuals, the 50mg dose is effective in treating erectile dysfunction. Increasing the dose to 100mg doesn't necessarily mean a proportional increase in effectiveness but may increase the risk of side effects.

    Side Effects: Higher doses of sildenafil can increase the likelihood and severity of side effects, such as headaches, flushing, dizziness, upset stomach, nasal congestion, vision changes, and in rare cases, more serious issues like priapism (prolonged erection).

    Health Conditions and Medications: Individuals with certain health conditions or taking specific medications might be more sensitive to higher doses of sildenafil. It's crucial to inform your doctor about any existing health conditions and medications before considering a higher dose.

    Tolerance: Continuous use of high doses might lead to tolerance, where the drug becomes less effective over time.

 

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