 What is the purpose of paraoxynebutal?
SEA LEGS By FRANK QUATTROCCHI Illustrated by EMSH [Transcriber's Note: This etext was produced from Galaxy Science Fiction November 1951. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] Rootless and footloose, a man in space can't help but dream of coming home. Flight Officer Robert Craig surrendered the tube containing his service record tapes and stood waiting while the bored process clerk examined the seal. "Los Angeles." "Los Angeles, eh? "No specific destination," supplied the man as he punched a key on a small instrument, "Air-lock ahead and to your right. "Insert your right arm into the instrument on the central table," commanded the same voice he had heard before. When he withdrew his arm, the scratch was neatly coated with a layer of flesh-colored plastic material. "With the help of paraoxylnebutal," supplied the captain. Short of Gravitational conditioning, there is nothing to stop you from going to Terra." Your body is conditioned to a normal state of free fall, or at best to a state of acceleration." "You were ill, couldn't keep your balance, felt dizzy. That is why all spacemen carry PON, paraoxylnebutal, with them. It helps suppress certain physiological reactions to an entirely new set of conditions. Channels of the ear, for example. They play an important part in our awareness of balance. Without gravity they act up for a time, then gradually lose function. Returning to gravity is rather frightening at first." "Do you know what sailors of ancient times meant by 'sea legs?'" asked Wyandotte. But even if he could accept the psychologist's authority for the cumulative effect of a gravity system, he could not understand the unspoken warning he felt underlying all that the man said. You agreed that you could not decide that for me and that my decision is logical. If the service needs men so badly, let them get somebody else. You will be given a very liberal supply of PON—which you will definitely need. On the eighth day, two attendants, who showed the effects of massive doses of PON to protect themselves from the centrifugal force, had to carry a man out of the tank. Many others asked to be removed, begged to be allowed to withdraw their resignations. "How ... how do they know when you ought ... to come out?" "Blood pressure. "Can't they ... drop it down continuously?"
 It helps people adjust to changes in gravity
 It relaxes the sympathetic nervous system  It puts a human to sleep for up to 12 days  It helps people adjust to changes in gravity  It opens the airways to allow for easier breathing