Thanks for your question and concern. As the name suggests, vacurect is a vacuum erection system. It is safe on a broader sense but some feel pain, cold and bruising experiences. But using a correct sized and with correct tension ring, good results are achievable. Tot tight rings will cause discomfort and too loose rings may not give a lasting erection. Moreover, don’t leave the ring there for more than half an hour. In proper use with lubrication, practice, correctly sized rings, it could be a good alternative. Take care.