Where does chlorine go when you drink it ?

Like any gas, chlorine will be less soluble in water as the water warms up in your stomach, so some chlorine gas will be released. Chlorine kills bacteria rapidly, and so we can expect chlorine to kill commensal bacteria in our gut which help keep our bowel healthy. The cells lining our stomach and bowel will also be attacked by chlorine and there is no reason to expect them to be more immune to its effects than bacteria. It is possible that some chlorine gas might be passed out as flatus, however those with long bowel transit times will have bowel mucosa exposed to chlorine for longer periods. We know that individual with long bowel transit times have an increased risk of bowel cancer. I have not been able to find out whether chlorine could be absorbed into the bloodstream, nor whether this might have any detrimental effect on the lining of blood vessels. I believe this is worth some research as atherosclerosis of arteries is the main cause of heart attacks and strokes.