Can a vitamin c pill fix a common drug problem?

This small, early-stage study looked at whether taking vitamin C (ascorbic acid) tablets could temporarily make stomach contents more acidic in healthy young men who were taking a common acid-reducing drug. The goal was to see if this simple approach could help other important medicines, like certain cancer drugs, be absorbed better when stomach acid is too low. Researchers measured stomach pH for five hours after participants took the vitamin C to see how much and for how long it changed.