NASA astronauts tested how fast humans can run on the moon. They ran on a treadmill in lunar gravity. In terms of design, Neil Armstrongâs iconic 1969 space suit wasnât exactly optimal. Bulky and stiff, the suit made it pretty hard for the astronauts aboard Apollo 11 to walk around.
Other proposed uses of citrulline are based on the fact that the body converts citrulline to the amino acid arginine . It is claimed by some that citrulline supplements are actually more effective at raising arginine levels than arginine supplements.
Ranitidine Uses: An Overview. Ranitidine hydrochloride (ZantacÂ®) is a medication that is available both as a prescription medication and an over-the-counter drug. It is used to treat conditions related to the esophagus, stomach, and intestines. Specific ranitidine uses include treatment or prevention of the following conditions: 1  Duodenal ulcers.  Gastric ulcers (stomach ulcers)