You must be sexually stimulated to get an erection while taking Viagra. Your doctor won’t recommend your Viagra dosage by weight. But they may recommend a lower dose of the drug if you’re older than 65 years. This is because you may have an increased risk of side effects given your age. So, for example, the dosage for someone 70 years old may be 25 mg as needed, instead of 50 mg as needed.
Warnings for people with certain health conditions
Tell your doctor all medications and supplements you use. Take it as your healthcare provider recommends, which is usually between 30 minutes to four hours before planned sexual activity. Sildenafil belongs to a group of medicines, known as phosphodiesterase-5 (PDE-5) inhibitors, which are used to treat erectile dysfunction or pulmonary arterial hypertension. You should not take more than one PDE-5 inhibitor medicine. Medicines in this group include avanafil (Stendra), sildenafil (Viagra, Revatio, and others), tadalafil (Cialis and others), and vardenafil (Levitra, Staxyn).
Prolonged erection greater than 4 hours and priapism (painful erections greater than 6 hours in duration) have been reportedinfrequently since market approval of VIAGRA. In the event of an erection thatpersists longer than 4 hours, the patient should seek immediate medicalassistance. If priapism is not treated immediately, buy xanax without prescrition penile tissue damage andpermanent loss of potency could result. The most common adverse reactions reported in clinical trials (≥ 2%) are headache, flushing, dyspepsia, abnormal vision, nasal congestion, back pain, myalgia, nausea, dizziness, and rash.
Store the suspension at room temperature or in a refrigerator, but do not freeze it. Call your doctor if you have any unusual problems while you are taking this medication. Ask your pharmacist or doctor for a copy of the manufacturer's information for the patient. If you are taking sildenafil to treat PAH, you will probably take sildenafil three times a day with or without food.
Drug Summary
Taken by men experiencing ED, it works by increasing blood flow to the penis. Increased blood flow helps men to get and maintain an erection. Viagra is a well-known, branded and common erectile dysfunction (ED) treatment for men containing the active ingredient sildenafil.
However, Viagra is not expected to be harmful to a fetus. Tell your doctor if you are pregnant or plan to become pregnant during treatment with Viagra. It is unknown if Viagra passes into breast milk or if it could harm a nursing baby. Get medical help right away, if you have any of the symptoms listed above.
Dosage Adjustments In Specific Situations
Viagra helps to decrease symptoms of ED by helping you to get and keep an erection. Symptoms caused by a Viagra overdose are the same as the drug’s typical side effects. But they may be more severe than usual if caused by overdose. To see a list of possible side effects with this drug, see the "What are Viagra’s side effects? Costs of prescription drugs can vary depending on many factors. These factors include what your insurance plan covers and which pharmacy you use.
It’s advised to not drink heavily before taking Viagra if you would like the best results. You will not be suitable for Viagra and other ED medications if you are taking nicorandil or nitrates, such as GTN spray or isosorbide mononitrate tablets to treat angina. It’s not advised to take out of date Viagra or any medication past its use by date. For full information on side effects and correct use, see the patient information leaflet. After taking Viagra, it will stay in your system for a few hours.
Administration of VIAGRA with nitric oxide donors such as organic nitrates or organic nitrites in any form is contraindicated. Consistent with its known effects on the nitric oxide/cGMP pathway, VIAGRA was shown to potentiate the hypotensive effects of nitrates [see DOSAGE AND ADMINISTRATION, CONTRAINDICATIONS, CLINICAL PHARMACOLOGY]. Viagra is intended for use in men, and is unlikely to be used in women who are pregnant or breastfeeding.