The compounded products use a special base called a transdermal gel.
Compounding pharmacies make this from scratch, and it is used for the pain products like ketamine etc to penetrate to the deeper tissues. RX only.
The other products you can find do not use that type of base because their approved FDA use is for the skin only. So they are not likely to penetrate deeply.
The only gel type thing I have ever found OTC is the base Biofreeze uses. The amount of menthol in it ..3.5%works very well for PN pain...whereas the new Precise cream by makers of Tylenol, had 9.5% which does not work at all the same way...it is a greasy cream base!
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Weezie looking at petunias 8.25.2017
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