Company Profile. Integra LifeSciences, a world leader in medical technology, is dedicated to limiting uncertainty for surgeons, so they can concentrate on providing the best patient care. Integra offers innovative solutions in orthopedic extremity surgery, neurosurgery, and reconstructive and general surgery.
There are subtle differences in how long the drug works and how quickly it works. Levitra works a little longer than Viagra. They both take effect in about 30 minutes. With Levitra, the effects last for about 5 hours. With Viagra, the effects last approximately 4 hours. Cialis works a bit faster (within about 15 minutes), and the effects last much longer -- up to 36 hours in some cases. Stendra can start working in as little as 15 minutes and last up to 6 hours.
Most people will start to feel the effects of withdrawal between 12-24 hours after they have taken their last dose. BUT, the question most people have is, âHow long does withdrawal last??!â Bear in mind, this can vary due to the type of opiate, how long it was taken and the personâs physical makeup. The most acute withdrawal symptoms will last 5-7 days, although some of the psychological symptoms (depression) can last a lot longer.