No,it's not. At least not any of it I ever tried to drink.
I've had corn whiskey so smooth I could pour it in my doberman's water dish,and she would drink it all without raising her head. She loved beer,but she would refuse to drink any other whiskey. She got drunk on it once and fell down the stairs and hurt her leg,and wouldn't drink it any more for a couple of weeks.
Of course you had to be REAL careful to not piss her off after a water bowl of corn whiskey.