No significant interactions were shown with tolbutamide mg or warfarin 40 mg , both of which are metabolized by CYP2C9. Manufacturer advises reduce dose to 10 mg once daily with concurrent use of some potent inhibitors of CYP3A4 avoid with ketoconazole, itraconazole and ritonavir. Swallow it as a whole with a glass of water, do not cut, break or chew the medicine. The information provided is for educational purposes only and is not intended to replace discussions with a healthcare provider. None of these factors had a significant impact on sildenafil pharmacokinetics in patients with PAH. The primary efficacy endpoint was the change from baseline at Week 12 at least 4 hours after the last dose in the 6-minute walk distance. A: Avoid driving if you feel dizzy or experience blurred vision after taking Viagra mg tablet Alcohol Can I consume alcohol with Viagra mg tablet? · A new Cleveland Clinic-led study has identified sildenafil – an FDA-approved therapy for erectile dysfunction (Viagra) and pulmonary hypertension (Revatio) – as a promising drug candidate to help prevent and treat Alzheimer’s disease. According to findings published in Nature Aging, the research team, led by Feixiong Cheng, Ph.D., of . The average length of time Viagra lasts. On average, Viagra lasts between 2 and 3 hours before its effects start to diminish. Viagra can last up to 5 hours or longer depending on your dosage, your. Generic Viagra (sildenafil) is an alternative to the branded Viagra drug that can be used for treating erectile dysfunction (ED). It’s now sold by many manufacturers, including online .