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How to take Viagra for best results?

Viagra is the most widely prescribed medicine for erectile dysfunction or impotence. In the United States, the Viagra manufacturers generated around 500 million dollars in revenue in 2019 by selling this medicine only.

Taking-viagra

People buy Viagra online as this drug relaxes the muscles found in the walls of blood vessels, which further increases the blood flow to specific parts of the body. Viagra generic is available with the name sildenafil.

How does Viagra treat ED?

Viagra treats erectile dysfunction by helping an individual achieve and maintain an erection. It improves the blood flow to the penis and helps attain an erection when you are sexually aroused. At the initial stage of treatment, doctors usually prescribe Viagra 25 mg to adults.

Viagra is a type of medicine known as a phosphodiesterase type 5 (PDE5) inhibitor that functions by inhibiting (or blocking) the action of an enzyme, PDE5. Basically, an enzyme is a protein that aids in creating chemical reactions inside your body.

Typically, an erection gets away when PDE5 breaks down the cyclic GMP present in your penis. But this drug blocks the PDE5 action and allows cyclic GMP to work for an extended period than usual. This action makes the blood flow smooth to the penis and helps you achieve and keep an erection.

Viagra Dosage

viagra dosage

In most cases, the healthcare professional recommends a dose of Viagra 50 mg, as per an individual’s need, approximately an hour before sexual intercourse. However, you are free to take this drug anywhere from half an hour to four hours before sexual activity.

The maximum recommended frequency of Viagra dose is once per day. Depending upon the effectiveness of this drug upon you and your tolerance, the healthcare professional may increase the prescribed amount to Viagra 100 mg or reduce it to 25 mg.

Viagra Drug Interactions and Dosage Adjustments

Ritonavir

The prescribed dose for ritonavir-treated patients is 25 mg 30 minutes before sexual activity. The maximum amount is also 25 mg within 48 hours since concomitant administration can increase the blood levels of sildenafil by 11 fold.

CYP3A4 Inhibitors

It would be best to keep 25 mg as the starting dose if you have been treated with a potent CYP3A4 inhibitor such as ketoconazole, saquinavir, itraconazole, or erythromycin. Clinical data have proved that co-administration of Viagra with saquinavir or erythromycin can increase plasma levels of sildenafil by approximately threefold.

Dosage Adjustments in Specific Conditions

There have been reports of this drug that depicts how it potentiates the hypotensive effects of nitrates. So, there are contraindications with its administration in patients who take nitric oxide donors such as organic nitrates or nitrites in any form.

While co-administering Viagra with an alpha-blocker, the healthcare professional should ensure that the patient is stable on alpha-blocker therapy before initiating treatment with Viagra. Doctors should prescribe the lowest effective dose possible such as Viagra 25 mg.

Does Viagra dosage depend upon age or weight?

Your Viagra dosage is least likely to be based upon your body weight, but it may depend upon your age. For example, people belonging to the age group of 65 years+ tend to get higher levels of this drug in their blood after taking a dose. So, if your age is over 65 years, your healthcare professional will recommend an initial dose of Viagra that is lower than the usual starting amount. They are more likely to prescribe you 25 mg rather than Viagra 50 mg.

Is it safe to take Viagra when you have high blood pressure?

We can not say that it is entirely safe to take this drug during high blood pressure, but you can take Viagra if you have controlled high blood pressure. Viagra relaxes smooth muscles for a proper flow of blood to the penis. Since this drug can make the blood vessels open more comprehensively, it can lower your blood pressure and cause a condition called vasodilation.

In some cases, you need to take the following cautions: 

  • If you take sildenafil with a blood pressure medication that can lower your blood pressure through vasodilation, your blood pressure can drop to a level that can make you feel dizzy or pass out.
  • Taking Viagra with a prostate medical known as an alpha-blocker can be dangerous. If you are taking an alpha-blocker and need Viagra for successful sexual intercourse, your healthcare professional may lower the dose of either drug.
  • Nitrates are another type of drug that can lower blood pressure. Such medications are used in individuals with heart disease to relieve chest pain conditions (or angina). It would be best not to take Viagra while using a nitrate drug as it can cause a dangerous drop in blood pressure.

To ensure your safety, tell your healthcare provider if you experience high or low blood pressure before starting erectile dysfunction (or impotence) treatment with Viagra. It would help if you also informed the pharmacist about all the herbal products, medications, or supplements you take. If you take any such product that lowers blood pressure together with Viagra, you may experience a sudden drop in blood pressure, called hypotension.

What are the side effects of Viagra?

Mild side effects that can accompany Viagra may include:

  • rash or hives;
  • muscle pain;
  • headache, dizziness;
  • temporary changes in vision, such as blurred vision, extreme sensitivity to light, or blue tinge to vision;
  • flushing (warmth or redness accompanied by tingly feeling);
  • nosebleeding, runny or stuffy nose;
  • pain in the back or muscles;
  • sleep problems (insomnia); or
  • upset stomach

Severe Viagra side effects are rare but may occur with several symptoms such as:

  1. NAION: It is an eye condition that can cause permanent damage to your optic nerve. The symptoms can include:
  • sudden reduction of vision in either one or both eyes
  • sudden vision loss in either one or both eyes
  1. Sudden reduction or complete loss of hearing. It may also involve other signs and symptoms such as:
  • dizziness, lightheadedness with a feeling like you might pass out
  • tinnitus (buzzing or ringing in your ears)
  1. Allergic reaction: It is rare as only two percent of people taking this drug have had an allergic reaction. It is unclear how often allergic reactions can occur in individuals who took a placebo (no active drug).

Mild allergic reaction to Viagra may include the following symptoms:

  • itchiness with skin rash
  • flushing (redness accompanied by warmth in your skin)

Severe allergic reaction to Viagra may occur with the following symptoms:

  • trouble breathing
  • swelling of your mouth, tongue, or throat
  • swelling under the skin, usually in your lips, eyelids, hands, or feet
  1. Priapism: A long-lasting and sometimes painful erection known as priapism is a medical emergency requiring immediate treatment. If not treated on time, this medical condition can cause permanent damage to the tissue in your penis and result in irreversible erectile dysfunction.
  2. Low blood pressure: Temporarily, Viagra can lower your blood pressure, but this is not common in most people. Less than two percent of people taking Viagra have experienced low blood pressure. It is not clear how often low blood pressure has occurred in people who took a placebo.
  3. Cardiovascular problems: On rare occasions, some people taking this impotence agent have had a heart attack, stroke, or other heartbeat issues. These conditions primarily occur in individuals who already have a pre-existing heart problem. Remember to visit a doctor if you are experiencing chest pain after administering Viagra.

Viagra is one of the most effective and widely used impotent agents that can help attain and keep an erection for successful and satisfying sexual intercourse.

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