Rapid Relief: Antacids and PPIs

Study sheet excerpt

Course Outline

  1. Antacids Mechanism
  2. Types of Antacids
  3. Antacids Uses
  4. Antacids Side Effects
  5. PPIs Mechanism
  6. Types of PPIs
  7. PPIs Clinical Uses
  8. PPIs Pharmacokinetics
  9. PPIs Adverse Effects
  10. Antiemetics Mechanisms
  11. Types of Antiemetics
  12. Antiemetics Uses

1. Antacids Mechanism

Key Concepts & Definitions

  • Antacids: Basic substances that neutralize gastric acid, providing symptomatic relief in acid-related disorders.
  • Neutralization Reaction: The chemical process where antacids react with hydrochloric acid (HCl) to produce water and salt, increasing gastric pH.
  • Gastric pH: The measure of acidity in the stomach; normal gastric pH ranges from 1.5 to 3.5.
  • Acid Rebound: A phenomenon where gastric acid secretion increases after the effect of antacids wears off, potentially worsening symptoms.
  • Rapid Onset: Antacids act quickly, usually within minutes, to neutralize existing stomach acid.
  • Duration of Action: The period during which antacids maintain elevated gastric pH, typically 1-2 hours.

Essential Points

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Quiz preview

1. What is the mechanism of action of antacids?

2. Which of the following is a type of antacid that contains aluminum hydroxide?

3. What is the primary function of proton pump inhibitors (PPIs) in gastrointestinal treatment?

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Flashcards preview

Antacids — mechanism?

Neutralize gastric acid chemically.

PPIs — main target?

H+/K+ ATPase enzyme in parietal cells.

Types of PPIs?

Omeprazole, Esomeprazole, Lansoprazole, Pantoprazole, Rabeprazole.

Antacids — mechanism?

Neutralize gastric acid via chemical reaction.

Gastric pH — normal range?

1.5 to 3.5

Acid rebound — cause?

Increased acid secretion after antacid effect wanes.

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