VIAGRA (Sildenafil)
Why is Viagra prescribed?
Viagra is indicated in the treatment of patients with erectile dysfunction or ED. Its generic name, also its active pharmaceutical ingredient, is Sildenafil.
What does it do?
Male patients with erectile dysfunction experience difficulties in sustaining an erected penis. Sildenafil belongs to a class of drugs called phosphodiesterase inhibitors (specifically, a PDE-5 inhibitor) that, when sexually stimulated, aid in smooth muscle relaxation which then increases the inward flow of blood, thus, prolonging the erection of the penis. It is important to note that sexual stimulation is needed for Viagra to take effect.
How should I take it?
Viagra and its generic equivalents are currently available in 25mg, 50mg, and 100mg tablets. Each tablet should be taken as a whole (do not split) by mouth with or without food. Note that if you take Viagra with fatty food, a considerable delay in its effects may be observed. Allow 30 minutes to 1 hour to pass prior sexual activity.
The dosage strength depends on every patient’s condition and the doctor’s prescription. It is imperative that you do not self-medicate and only take this drug after consulting with your physician or pharmacist to determine the best dosage and dosing schedule for the treatment of your condition.
What if I missed a dose?
The desired effects of prescribed medications will only be achieved if taken properly. As much as possible, strictly follow your doctor’s prescribed dosing schedule. However, if you miss a dose, take it immediately and adjust the time of your next dose depending on your doctor’s advice. Never take two doses at the same time just to make up for your missed dose.
What are the special precautions before using Viagra?
Inform your doctor about all the medications you are taking, your current and previous medical history especially if you have heart, kidney, liver and blood problems and if you have any allergies to Sildenafil or any other ingredients included in the manufacture of this medication.
For the drug label information of Viagra, click here.
Does it have any side effects?
It is important to note that all drugs have corresponding side effects and adverse reactions. Additional information may be obtained when you ask your doctor or pharmacist.
- Common side effects include:
- Nausea
- Diarrhea
- Flushing
- Headache
- Stomach upset
- Muscle pain
- Serious side effects include:
- Sudden change or loss of vision and hearing
- Chest pain
- Convulsions
- Fainting
- Irregular heartbeat
- Palpitations
- Prolonged erection
- Seizures
- Urticaria, Steven-Johnsons syndrome or exfoliative dermatitis
Is it safe to use it with another drug?
Some drug interactions may cause life-threatening reactions when taken with other medications. Immediately inform your doctor if you are taking Viagra with any of the following medications:
- Alcohol
- Alfuzosin
- Biaxin
- Carbatrol
- Cardura
- Coreg
- Coumadin
- Dilantin
- Efavirenz
- Erythromycin
- Flomax
- Hydrochlorothiazide
- Indinavir
- Isordil
- Losartan
- Minipress
- Norvasc
- Nitrostat
- Prazosin
- Rifampin
- Riociguat
- Ritonavir
- Sporanox
- Tadalafil
- Tegretol
- Terazosin
- Uroxatral
If you are using any prescription, non-prescription, and herbal medications, inform your doctor and pharmacist for proper information and ask for other possible interactions not listed within this section.
How should I store it?
Store Viagra in a clean environment away from excessive heat and moisture. Keep out of reach of children.
What action should I take in case of overdose?
Call an ambulance and seek immediate medical attention to prevent further complications or possible death.
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