Yes that’s true. All medication or drugs have side effects and you don’t want to start relying on them unless there is medical issue or age. Looking through this thread clearly there is a promotion of these pills and jelly.
My suggestion would be to try a healthy lifestyle first. Food rich in nitrogen oxide help to enlarge the arteries supplying blood to give stronger errection. For control one needs to do kegel excersises. Strengthening the core muscles will also help in the activity. You can search for kegel excersises on YouTube. These are great for both men and women. If your partner is into kegel excersises and have the muscles trained can enhance your sensations also by squeezing the muscles during sex.