COXs x CACNA2D2 x CACNA2D1

Part A The primary objective of this study is to determine the single dose pharmacokinetics (PK) of ketoprofen lysine salt combined with gabapentin (KLS-GABA [80 mg-34 mg]) compared to KLS alone (80 mg) in healthy male subjects.
The secondary objective of this study is:
• To determine the safety and tolerability of a single oral dose of KLS-GABA (80 mg-34 mg) compared to KLS alone (80 mg) in healthy male subjects.
Part B The primary objective of this study is to determine the pharmacodynamic (PD) effects of KLS-GABA in the Intradermal (ID) capsaicin model in healthy male subjects.
The secondary objectives of this study are:
* To further investigate the safety, tolerability, and PK of single oral doses of KLS-GABA and KLS alone.
* To investigate the possible relationship between plasma levels of drug and efficacy in pain reduction.

This is randomized , open-label, multiple-dose, parallel study to compare the pharmacokinetics and to evaluate Drug-Drug Interaction of "CG-651" in healthy volunteers.