I strongly recommend using the Tantric/Tao techniques for delaying and multiple orgasm. I can tell you it works and you don’t have to worry about crazy creams or her being affected by them.
If you give yourself a month or two to work on this you’ll be absolutely amazed at the results. I’ve literally had non-ejaculatory orgasms and gone until she was coming down and ended sex with a hard-on ready to go again - both of us completely satisfied.
I’m convinced we’re way to conditioned to look for a pill or creme where a little work will do the trick. I guess it explains the multitude of diet pills, breast enhancement creams, and everything else out there.
Look around Thunder’s … a lot of the information is here. You can get books on Tao and Tantric with more detailed info as well.