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A major part of the world population dealing with erectile dysfunction may be due to any physical and psychological conditions prefers to buy Sildenafil online to ensure its authenticity. Apart from its generic form, Sildenafil is sold under the trade name Revatio and Viagra. Revatio is the version used to treat PAH (pulmonary arterial hypertension).

We shall further discuss its usage, dosage, and its side effects here in detail.

What is a Sildenafil Pill?

Sildenafil is a great medication used to treat erection problems also known as erectile dysfunction. These tablets are also used to treat pulmonary hypertension, a condition of high blood pressure in the blood vessels that supply the lungs. If you have erection problems sildenafil works by temporarily increasing blood flow to your penis when you get sexually excited or aroused. In treating pulmonary hypertension, Sildenafil works by relaxing blood vessels in the user’s chest.


If you choose to buy Sildenafil online rather than over the counter for erectile dysfunction, it can also be ordered by the brand names Viagra, Aronix, Liberize, and Nipatra. Whereas Sildenafil used for treating pulmonary hypertension is sold under the trade names Revatio and Grandipam. Sildenafil can help you achieve an erection with some sexual stimulation. An erection will not occur just by taking a Sildenafil pill.


Sildenafil medicine belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. Sildenafil works on the PDE5 enzyme present in the lungs and penis to relax the blood vessels. This eventually increases the supply of blood to the lungs and penis to promote an erection.


Concerned doctors recommend using Sildenafil tablets 30-60 minutes before having any sexual activity or intercourse. The pill’s effects reach maximum effect within an hour. Once it is working, you may observe its effect for 2-6 hours depending on the intake dosage. Sildenafil helps to get an erection and maintain it with the help of some stimulation.

Sildenafil can take up to 5-6 hours to completely leave an individual’s system, depending on the metabolism and dose. A higher dose of Sildenafil will take a longer time to leave the body. Like every other medication, Sildenafil is also metabolized in the liver and is ejected from an individual’s system via urine or stool.

How to Use Sildenafil Properly?

To treat erectile dysfunction, Sildenafil must be used as directed by the doctor orally. Take a  Sildenafil tablet for at least 30 minutes or 1 hour before having any sexual activities or intercourse for its most effective effects. It is not recommended to take more than one tablet per day.

A high-fat meal can delay the working and effects of the drug. This medicine is available on prescription and you can also buy it from most pharmacies or telemedicine providers. It comes as standard tablets, chewable tablets, and as a liquid that you can swallow easily.

Doctors strictly advise to buy Sildenafil online and use it as directed in the prescription for better results. Using the drug more than the prescribed amount can lead the user to situation of a drug overdose. Moreover, online Sildenafil tablets are completely legal and legit.

Various Sildenafil Doses

As we previously learned that Sildenafil tablets are sold as Revatio and Viagra. However, these medicines are available in various doses to suit the prescription of different individuals.

  • Sildenafil 25 mg
  • Sildenafil 50 mg
  • Sildenafil 100 mg

For the treatment of erectile dysfunction in:

  • Adults up to 65 years of age: 50 mg of Sildenafil tablets as a single dose once per day is recommended. For best results take it 1 hour before sexual intercourse.
  • Geriatric patients over the age of 65 years: 25 mg of Sildenafil as a single dose once a day is generally recommended for geriatric patients.

For treatment of pulmonary arterial hypertension (PAH):

  • Adults dose: In general, 5-20 mg of Sildenafil, three times a day is recommended by the doctor. Each dose should be taken at an interval of 4 to 6 hours.

Due to the increasing number of telemedicine and tele healthcare providers, now you can order Sildenafil easily and receive the medicines at your doorsteps. But when you buy Sildenafil online you need to produce a valid prescription during checking out.

Overdose Symptoms

  • Headaches
  • Dizziness
  • Indigestion
  • Blocked nose or choking
  • Nausea
  • Vomiting, etc.

Side Effects of Using Sildenafil Medicine

  • Flushing
  • Headaches
  • Dizziness
  • Heartburn
  • Upset stomach
  • Blurry vision or changes in colors
  • Runny or stuffy nose
  • Insomnia
  • Muscle spasms and back pain
  • Mild fever
  • An erection that lasts longer than normal
  • Respiratory infection
  • Nausea
  • Vomiting
  • Bronchitis
  • A sore throat, etc.

Interaction With other Substances

Drug interactions can change how the medications work or further increase the risk for many serious side effects. Sildenafil oral tablet can interact with other medications, drugs, or substances. This can prevent the drug from working effectively.

Sildenafil can cause a serious drop in an individual’s blood pressure when used with other medication or drugs. A serious drop in blood pressure can lead to dizziness, fainting, heart attack, or stroke.

  • Nitrates
  • Guanylate cyclase stimulators
  • HIV drugs, such as ritonavir, indinavir, saquinavir, or atazanavir
  • Antibiotic medication
  • Antifungals medicines
  • Alpha-blockers
  • Blood pressure drugs
  • Other drugs for erectile dysfunction, such as avanafil, tadalafil, vardenafil, etc.
  • Alcohol, narcotic products, etc.

Who Should Not Avoid Using Sildenafil

Using Sildenafil medicine under certain specific health conditions is prohibited. As it promotes blood flow by relaxing the blood vessels, using Sildenafil drug for a prolonged time can induce serious cardiological issues. An individual should not use Sildenafil if he/she:

  • is allergic to the drug
  • uses other medicines to treat pulmonary arterial hypertension
  • uses medicine containing nitrate drug for chest pain
  • has heart problems
  • have high or low blood pressure
  • have Retinitis Pigmentosa
  • have complete or partial blindness
  • have bleeding problems
  • have a stomach ulcer
  • have a pulmonary veno-occlusive disease (PVOD)
  • have liver or kidney disease
  • have a blood cell disorder like sickle cell anemia or leukemia
  • have a physical deformity of the penis or Peyronie’s disease
  • have recently had a stroke, heart attack, or a heart problem
  • have a bleeding problem like hemophilia