It’s available in 10 mg and 20 mg tablets. Refills: See if you can set up automatic refills or order as needed. Some people may also have ringing in their ears tinnitus or dizziness. This medicine also works best when you take it an hour before sex on an empty stomach. While each PDE5 inhibitor differs slightly, they’re very similar in treating erectile dysfunction. Box , Mission, KS If your pharmacy does not participate, you may be able to submit a request for a rebate in connection with this Savings Offer. This information is reviewed by a licensed practitioner who will assess your eligibility for the medication.They’re often the first line of treatment for trouble getting or keeping an erection, called erectile dysfunction (ED). Oral medicines for ED usually work well and . VIAGRA is available by prescription only in 25 mg, 50 mg, and mg tablets. Patients should always ask their doctors for medical advice about adverse events. You are .