Yes, but you have about two years before it exceeds its shelf life. Do not press on the plunger of the syringe. The medicine will come with a plastic syringe or spoon to help you take the right amount. For treatment of erectile dysfunction: For oral dosage form tablets : Adults up to 65 years of age—50 milligrams mg as a single dose no more than once a day, 1 hour before sexual intercourse. Dosing The dose of this medicine will be different for different patients. This is called priapism, a medical emergency for which you should seek immediate care.AdHeute bestellen, morgen erhalten: Online-Rezept und gratis Lieferung innert 24 Stunden. Unser Online-Ärzteteam verspricht professionelle Beratung und gratis Express-Lieferung. Cialis is only available by prescription in the United States. Viagra: Additionally, a study from Trusted Source. found that combining L-arginine and sildenafil (Viagra) worked better for. The official Viagra shelf life is two years, but this isn’t true across the board for generic unbranded Sildenafil providers – because some have differing shelf lives. However, this is only the period in which Viagra can be guaranteed to remain as effective and safe as intended. Depending on storage conditions, Sildenafil may remain.