not sure what you mean but we have used 'maintain' to desensitize the penis so he doesn't ejeculate to soon. it is available in Walmart.
put more time on foreplay so that you will enjoy your intercourse a lot longer.
In my case, these things were helpful:
-having sex more often (desired frequency) and on a regular basis
-using more non-coital activities, e.g. oral sex, handjobs etc (with or without orgasm)
-using condoms helped a little bit, too