https://patient.info/digestive-health/indigestion-medication/h2-blockers
H2 Blockers: Uses and Side-Effects
H2 blockers reduce the amount of acid made by your stomach. H2 blockers are used in conditions where it is helpful to reduce stomach acid. Written by a GP.
h2 blockersusessideeffects
https://www.acsh.org/tags/h2-blockers
H2 blockers | American Council on Science and Health
h2 blockersamerican councilsciencehealth