Definition: Antacids are the most useful drugs for relief of hyperacidity & associated pain.
Antacid preparations are weakly basic and consist of metal salts, most cOD1Jl1only alluminium
hydroxide, magnesium hydroxide,calcium carbonate or sodium bicarbonate.
Classification: Antacids are classified as:
i. Systemic antacids:
Which are usually absorbed from the gut so, these are preferable as blood
alkaliser to combat acidosis rather than antacids,such as sodium bicarbonate, sodium citrate, sodium acetate, potassium citrate.
ii. Non-systemic antacids:
These are not significantly absorbed from the gut and mainly used as antacids such as; aluminium hydroxide, magnesium hydroxide, magnesiul11 trisilicate.
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