Sildenafil citrate 100 mg starting dose in men with erectile dysfunction in an international, double-blind, placebo-controlled study: effect on the sexual experience and reducing feelings of anxiety about the next intercourse attempt

Sildenafil > sildenafil citrates


Sildenafil (Viagra, Vybrique brands and generic) is used to treat erectile dysfunction (ED, impotence). It increases blood flow to the penis following sexual stimulation by blocking the enzyme responsible for the breakdown of cGMP. This allows men to keep an erection hard enough for sex. Sildenafil (Viagra, Vybrique brands and generic) only works following sexual stimulation.

What happens if I overdose?

Under the Rules of Origin the original foreign country of origin would remain. Animal, Plant, Fish) may require special country importation requirements.USP recommends you contact your country competent authorities to determine if any certifications, permits or licenses may be required prior to ordering.Material Origins are found within the Product under Origin Information. Sildenafil is used sildenafil oral jelly 100 mg to treat erectile dysfunction (ED) in men or pulmonary arterial hypertension (PAH) in both men and women, depending on the brand. Viagra and Vybrique are used for ED and Revatio is used for PAH. Sildenafil works by blocking the action of an enzyme called cGMP-specific phosphodiesterase type-5 (PDE-5). It works within 30 to 60 minutes, but may be taken up to four hours before sexual activity. Sildenafil (Revatio brand) reduces high blood pressure associated with pulmonary arterial hypertension (PAH). This improves the ability to exercise in people with PAH and delays any worsening of their symptoms.

Product Dosage Quantity + Bonus Price
Kamagra Soft Tabs100mg180 + 8 Pills425.45€ 405.19€
Viagra Generic50mg360 + 10 Pills225.33€ 214.60€
Kamagra Oral Jelly100mg10 Sachets54.55€ 51.95€
Viagra Generic50mg270 + 8 Pills198.48€ 189.03€
Viagra Generic200mg90 + 6 Pills170.79€ 162.66€
Kamagra Polo100mg272 + 12 Pills622.94€ 593.28€
Viagra Generic150mg360 + 10 Pills423.48€ 403.31€
Viagra Generic200mg60 + 4 Pills125.19€ 119.23€
Kamagra100mg20 Pills86.09€ 81.99€
Kamagra Oral Jelly100mg63 + 7 Sachets224.18€ 213.50€
Viagra Generic200mg180 + 10 Pills277.56€ 264.34€
Viagra Generic150mg30 + 2 Pills72.32€ 68.88€
Viagra Generic25mg10 Pills25.19€ 23.99€
Viagra Generic150mg90 + 6 Pills147.18€ 140.17€
Viagra Generic50mg10 Pills26.87€ 25.59€

When used to treat PAH, sildenafil is available as tablets (20 mg) for and an IV injection.

What other drugs will affect sildenafil?

This enzyme breaks down cGMP, a substance that induces smooth muscles to relax. Blocking PDE-5 means increased levels of cGMP within the smooth muscles which promotes muscle relaxation and vasodilation (a widening of blood vessels). High levels of PDE-5 are found in the penis, lungs, and retina. PDE-5 is also found throughout the body within the smooth muscle cells of the blood vessels and muscles. Sildenafil belongs to the drug class called phosphodiesterase (PDE) type 5 inhibitors. When used for ED, sildenafil is available as oral tablets of 25 mg, 50 mg, and 100 mg strengths, or an oral film (Vybrique brand) of 25 mg, 50 mg, 75 mg, and 100 mg strengths.

  • Sildenafil is available in various dosages: 25 mg, 50 mg, 100 mg.
  • Starting dose depends on individual health and response.
  • Dose adjustments should be done under medical supervision.
  • Overuse may lead to increased side effects.
  • Missing a dose is generally safe; do not double up.
  • The drug may be taken with or without food.
  • It’s generally recommended to avoid heavy meals before taking.
  • Always follow your healthcare provider’s guidance.

If you are between the ages of 18 and 60, sildenafil online ireland take no other medication or have no other medical conditions, side effects you are more likely to experience include: Dyspepsia, flushing, headache, indigestion, muscle or back pain, and visual disturbances are the most common side effects reported. Other side effects include a drop in blood pressure, insomnia, nasal congestion, or a runny nose and nosebleeds.

  • Sildenafil may interact with other medications, increasing risks.
  • Significant interactions include nitrates and alpha-blockers.
  • Patients should disclose all medications to their doctor.
  • Combining with certain drugs can cause dangerous drops in blood pressure.
  • Regular liver function monitoring may be necessary.
  • Some herbal supplements also have interaction potential.
  • Avoiding certain foods and medications reduces risks.
  • Proper management improves treatment efficacy.

Sudden hearing loss has also been reported. Some people taking sildenafil have had bleeding events; however, it has not been established if this is related to sildenafil use.

Monographie du produit

You should always consult your doctor or other healthcare professional before taking any medication. The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. The absence of warnings or other information for a given drug does not indicate that the drug or drug combination is safe, effective, or appropriate for all patients or all specific uses. USP Certificates/Product Information Sheets and Valid Use Dates View the USP Certificate or Product Information Sheet in the table above to view additional product details, including available label text and storage information. View the USP Certificate or Product Information Sheet in the table above to view additional product details, including available label text and storage information.

Storage Class

1The Harmonized System (HS) code provided on this webpage is for informational purposes only and is subject to change without notice. The exporter and/or importer of record is responsible for determining the accuracy of items at the time of export/import per U.S. regulations. USP is not responsible for the accuracy or completeness of the information furnished. 2USP procures materials worldwide and most foreign materials do not undergo a fundamental change during the packaging process at USP that would substantially transform the item resulting in a country of origin change from the foreign origin to the United States. Rarely, may decrease blood flow to the optic nerve causing sudden vision loss. The risk is greater in people aged older than 50, with diabetes, heart disease, high blood pressure, high cholesterol, who smoke, or with certain pre-existing eye problems.

Side Effects

Tadalafil is the generic name for the erectile dysfunction drug Cialis. There are two versions of the drug: a version that can be taken as needed Cialis 5-mg daily dosing is the only PDE5 inhibitor dose approved for treating an enlarged prostate; improving ED symptoms is an added benefit of the daily dose. Because of the “as needed” version of tadalafil, some users may find this option more convenient. The downside, however, is that side effects tend to last longer too. The main difference between generic sildenafil and Viagra is marketing.

Statistical Analysis

The main ingredient in Viagra is sildenafil, meaning that the drugs are essentially the same. However, Viagra is marketed and prescribed strictly for erectile dysfunction, while generic sildenafil can be prescribed for PAH as well. Viagra is also known as “the little blue pill” because of its blue color, while generic sildenafil tends to be a white color. Disclaimer: Healthline has made every effort to make certain that all information is factually correct, comprehensive, and up to date. However, this article should not be used as a substitute for the knowledge sildenafil citrate 150 mg red pill and expertise of a licensed healthcare professional. Rarely, may cause other side effects or lead to painful erections lasting longer than four hours. See your doctor immediately if this happens. May not be suitable for some people including those with angina, chest pain, other heart conditions, liver or kidney problems, blood or bleeding disorders, stomach ulcers, certain eye conditions, or a physical deformity of the penis (such as Peyronie's disease). Higher dosages of sildenafil are associated with a higher risk of death in children with PAH. For this reason, the FDA does not recommend use in children aged less than 18 years.

  • The discovery of sildenafil began with research on heart drugs.
  • It was found to cause vasodilation as a side effect.
  • Pfizer refined the drug for erectile dysfunction.
  • It became a blockbuster drug upon FDA approval.
  • Sildenafil has helped millions worldwide.
  • It has changed perceptions about male sexual health.
  • Ongoing research explores new formulations.
  • Awareness campaigns promote safe usage.

May interact with some medications including certain antibiotics and antifungals, herbal remedies, HIV medicines, nitrates, and drugs used in the treatment of high blood pressure or prostate disorders. Sildenafil should not be taken with other PDE-5 inhibitors.

Indication Patient Group Dosage Recommendation Additional Notes
Erectile Dysfunction Men aged 18-65 50 mg30-1 hour before activity Adjust based on efficacy and tolerability
Pulmonary Hypertension Adults with PAH 20 mg three times daily Extended release available
Raynaud's Phenomenon People with secondary Raynaud's Off-label use, consult physician Limited clinical evidence

The dosage may need to be reduced in people with kidney or liver disease. More research is needed to establish if sildenafil has a role in sexual dysfunction in women. Sildenafil offers no protection against sexually transmitted diseases.

  • Sildenafil can cause sudden vision loss (rare side effect).
  • Men with a history of retina problems should use caution.
  • It may cause a drop in blood pressure, leading to dizziness.
  • Patients should report any persistent erection lasting over 4 hours.
  • It is crucial to have proper medical evaluation before use.
  • Not suitable for individuals with severe liver or kidney conditions.
  • The medication is also investigated for breast cancer treatment.
  • Proper hydration can help minimize some side effects.

Note: In general, seniors or children, people with certain medical conditions (such as liver or kidney problems, heart disease, diabetes, seizures) or people who take other medications are more at risk of developing a wider range of side effects. Sildenafil is used to treat erectile dysfunction (ED) (Viagra, Vybrique brands, generic) and to reduce blood pressure in pulmonary arterial hypertension (PAH) (Revatio brand). It is taken when needed for ED approximately 1 hour before sexual stimulation (maximum dose once daily) and daily for PAH. A headache, stomach upsets, and flushing are the main side effects, and it should not be taken within 24 hours of a nitrate. If you are taking sildenafil (Viagra, Vybrique) for ED, do not take it more than once a day. Take an hour before sexual stimulation (range 30 minutes to 4 hours). If you take it with a high-fat meal it may delay how quickly it starts working. Place sildenafil film on your tongue and allow it to dissolve. If you are taking sildenafil (Revatio) for PAH, take it as directed (the usual dosage is three times daily). You can take it either with or without food. Do not consume grapefruit or grapefruit products while taking sildenafil.

What should I know about storage and disposal of this medication?

If you are taking Revatio and you forget to take your scheduled dose, take it as soon as possible. However, you should never double your dosage. If you completely miss a dose and it’s time for the next dose, skip the one you missed. Are there any safety measures I should take before using this drug? Like most medications, there are precautions you should take before using this drug.

Pregnancy Categories

Make sure you talk with your doctor about: any other drugs, medications, herbs, or supplements you take or plan to take any medical conditions or surgeries you have or plan to have if you are pregnant or plan to become pregnant There are other drugs available to treat your condition. Some may be better suited for you than others. Talk with your doctor about other drug options that may work for you. Sildenafil and tadalafil are alike because they both can treat ED and PAH. However, tadalafil has a few distinctions from sildenafil. Always talk to your doctor before taking ANY medication for ED. Some ED medications are not suitable for men with certain medical conditions, and your doctor can advise you on an alternative. Call your doctor immediately if you experience dizziness or feel nauseous during sexual activity, or develop pain, numbness, or tingling in your chest, arms, neck, or jaw.

Other uses for this medicine

Always carry the original prescription-labeled container with you. Don’t put this medication in your car’s glove compartment or leave it in the car. Be sure to avoid doing this when the weather is very hot or very cold. If you’re taking this drug for PAH, your doctor may monitor your blood pressure and pulse regularly. When filling your prescription, be sure to call ahead to make sure your pharmacy carries it.

Missed Dose

Many insurance companies require prior authorization for this drug. This means your doctor may need to get approval from your insurance company before your insurance company will pay for the prescription. Sildenafil under the brand name Viagra is prescribed to treat erectile dysfunction by increasing blood flow to the penis during arousal. Sildenafil under the brand name Revatio is often prescribed to help adults with PAH get more exercise by treating their condition. What if I forget to take it?