Female led relationships discussion

When I notice a decline in endurance or his submissive reaction, I like to try different approaches to maintain engagement. This is currently happening with one of my subs; I enjoy raising both his frustration levels and the expectations he meets for me. I suggested that he see his physician for evaluations and get a prescription filled for sildenafil, which he has done. It’s worth noting that this doctor visit (excluding dental work) was an unusual time when he got to experience temporary relief from being locked by Lori #9… and I plan to utilize the sildenafil during teasing moments and other situations as it suits me. I am interested in hearing what others have experienced with using sildenafil on men who are kept locked. Thank you.