However, the dose is usually not more than 80 mg 3 times a day. Push the plunger of the syringe, then insert the tip into the bottle while holding the bottle upright on a flat surface. Perhatikan beberapa hal berikut sebelum menggunakan Viagra: Jangan mengonsumsi Viagra jika Anda alergi terhadap obat ini atau sildenafil. Having sex more than once a day is great. Do not forget that there are different companies that are providing this medicine and each one of them has its own version. · Viagra is usually taken only when needed, 30 minutes to 1 hour before sexual activity. You may take it up to 4 hours before sexual activity. Do not take Viagra more than once per day. Shake the oral suspension (liquid) before you measure a dose. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).  · Viagra is usually taken only when needed, 30 minutes to 1 hour before sexual activity. You may take it up to 4 hours before sexual activity. Do not take Viagra more than once per day. Shake the oral suspension (liquid) before you measure a dose. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon). Viagra (sildenafil) is a prescription drug that’s used to treat erectile dysfunction (ED). The drug comes as a tablet you’ll take by swallowing. It’s usually taken as needed about 1 hour.