I’ve never thought of it “controlling” me.
The one thing you have to work out is how much of it as a dose is enough for you.
Not so much that you get bad side effects, red flushes, headaches, etc..
And not so little that it wears off too quickly, or worse still doesn’t work fully...
For me and most others, the different products give me control over my cock.
All of them with Sildenafil have ED (Erectile Dysfunction) helping properties, essentially they get you harder than normal, even if you don’t need them, and help you stay hard through mental stimulation, when you might otherwise go soft during sex due to a lack of physical stimulation, and they also help you get hard again quickly if you’re in a multipop situation, or say when you have had a blowjob, then you do DATY for a while before sexual penetration occurs.
Some of them also have Dapoxetine, which has PE (Premature Ejaculation) properties, and it helps desensitize the firing triggers in your cock and body, giving you a way better ability to turn back or off your ejaculation when you get near launch mode. This basically lets you get to the edge, back off, edge again, and back off again. But like all edging, that final release can be harder to get each time you delay it, but it can also be oh so sweet and stronger when you do...