Does procaine bring any effects that may place it as a recreational drug? please, need some answers?

Local anesthetic: http://en.wikipedia.org/wiki/Procaine The primary use for procaine is as a topical anaesthetic. Procaine is used less frequently today since more effective (and hypoallergenic) alternatives such as Lidocaine (Xylocaine) exist. It has been discontinued from US markets. If you are asking if a local anesthetic can be blamed for drug test failure, the answer is no.