Antacid
Gastric acid neutralizer
- Raises gastric pH
- Fast symptom relief
- No effect on acid production
- Higher pH alters absorption of many other drugs
Drugs with this mechanism (2)
- Calcium carbonate — OTC calcium supplement and antacid.
- Sodium bicarbonate — Alkalinizing agent; neutralizes gastric acid and ion-traps weak acids in urine.
Self-check
- Do antacids reduce gastric acid production?
No. - Why can antacids alter other drugs' absorption?
They raise gastric pH.