GI Drugs Flashcards
Proton pump inhibitors
H2-receptor blockers
Sucralfate
Antacids
Drugs used in acid-peptic diseases
Drugs used in acid-peptic diseases
Proton pump inhibitors
H2-receptor blockers
Sucralfate
Antacids
Proton pump inhibitors
Omeprazole
Lansoprazol
Etc
Omeprazole
Proton pump inhibitor
Lansoprazol
Proton pump inhibitor
Proton pump inhibitors
Mechanism of action
Irreversible blockade of H+/K+ATPase pump in active parietal cells of stomach
Irreversible blockade of H+/K+ATPase pump in active parietal cells of stomach
Proton pump inhibitors
Mechanism of action
Proton pump inhibitors
Effects
Long-lasting reduction of stimulating and nocturnal acid secretion
Long-lasting reduction of stimulating and nocturnal acid secretion
Proton pump inhibitors
Effects
Proton pump inhibitors
Clinical applications
Peptic ulcer
Gastroesophageal reflux disease
Erosive gastritis
Peptic ulcer
Gastroesophageal reflux disease
Erosive gastritis
Proton pump inhibitors
Clinical applications
Proton pump inhibitors
Toxicities
Reduction of stomach acid may reduce absorbtion of some drugs and increase that of others
Reduction of stomach acid may reduce absorbtion of some drugs and increase that of others
Proton pump inhibitors
Toxicities
H2-receptors blockers
Cimetidine
Etc
H2-receptors blockers
Cimetidine
Etc
H2-receptors blockers
Effects
Effective reduction of nocturnal acid but less effective against stimulated secretion, very safe.
Effective reduction of nocturnal acid but less effective against stimulated secretion, very safe.
H2-receptors blockers
Effects
Sucralfate
Effects
Polymerizes at site of tissue damage (ulcer bed) and protectsagainst further damage; very insoluble with no systemic effects; must be given 4 times daily
Polymerizes at site of tissue damage (ulcer bed) and protectsagainst further damage; very insoluble with no systemic effects; must be given 4 times daily
Sucralfate
Effects
Antacids
Effects
Popular OTC medication for symtomatic relief of heartburn; not as usful as PPI and H2 blockers in peptic diseases
Popular OTC medication for symtomatic relief of heartburn; not as usful as PPI and H2 blockers in peptic diseases
Antacids
Effects
Drugs stimulating motility
Metoclopramid
Domperidone
Cholibomimetics: Neostigmine
Macrolides: Eryhromycin
Metoclopramid
Domperidone
Cholibomimetics: Neostigmine
Macrolides: Eryhromycin
Drugs stimulating motility
Drugs stimulating motility
Metoclopramid
Domperidone
Mechanism of action
D2-receptor blocker
Removes inhibition of acetylcholine neurons in enteric nervous system
D2-receptor blocker
Removes inhibition of acetylcholine neurons in enteric nervous system
Drugs stimulating motility
Metoclopramid
Domperidone
Mechanism of action
Drugs stimulating motility
Metoclopramid
Domperidone
Effects
Increases gastric emptying and intestinal mobility
Drugs stimulating motility
Metoclopramid
Domperidone
Effects
Increases gastric emptying and intestinal mobility
Drugs stimulating motility
Metoclopramid
Domperidone
Clinical applications
Gastric paresis (e.g, in diabetic) Antiemetic
Gastric paresis (e.g, in diabetic) Antiemetic
Drugs stimulating motility
Metoclopramid
Domperidone
Clinical applications
Drugs stimulating motility
Metoclopramid
Domperidone
Toxicities
Parkinsonian symtoms due to block of central nervous system (CNS) D2 receptors
Parkinsonian symtoms due to block of central nervous system (CNS) D2 receptors
Drugs stimulating motility
Metoclopramid
Domperidone
Toxicities
Laxatives
Magnesium hydroxide, other nonabsorbable salts Bulk-forming laxatives Stimulants laxatives Stool surfactans Chlorid channal activator Opioid receptor antagonists 5-HT4 agonists
Magnesium hydroxide, other nonabsorbable salts Bulk-forming laxatives Stimulants laxatives Stool surfactans Chlorid channal activator Opioid receptor antagonists 5-HT4 agonists
Laxatives
Magnesium hydroxide, other nonabsorbable salts and sugars
Mechanism of action
Osmotic agents increase water content of stool
Osmotic agents increase water content of stool
Magnesium hydroxide, other nonabsorbable salts and sugars
Mechanism of action
Magnesium hydroxide, other nonabsorbable salts and sugars
Effects
Usally cause evacuation within 4-6 h, sooner in large doses
Usally cause evacuation within 4-6 h, sooner in large doses
Magnesium hydroxide, other nonabsorbable salts and sugars
Effects
Magnesium hydroxide, other nonabsorbable salts and sugars
Clinical applications
Simple constipation
Bowel prep for endoscopy
(especially PGE solutions)
Simple constipation
Bowel prep for endoscopy
(especially PGE solutions)
Magnesium hydroxide, other nonabsorbable salts and sugars
Clinical applications
Magnesium hydroxide, other nonabsorbable salts and sugars
Toxicities
Magnesium may be absorbed and cause toxicity in renal imparment
Magnesium may be absorbed and cause toxicity in renal imparment
Magnesium hydroxide, other nonabsorbable salts and sugars
Toxicities
Bulk-forming laxatives
Methylcellulose
Psyllium
Etc
( increase volume of colon, stimulat evacuation)
Methylcellulose
Psyllium
Etc
( increase volume of colon, stimulat evacuation)
Bulk-forming laxatives
Stimulants (laxatives)
Senna
Cascara
(Stimulate activity; may cause cramping)
Senna
Cascara
(Stimulate activity; may cause cramping)
Stimulants (laxatives)
Stool surfactants
Docusate
Mineral oil
(Lubricate stool, ease passage)
Docusate
Mineral oil
(Lubricate stool, ease passage)
Stool surfactants
Chloride channal activators (laxatives)
Lubiprostone
Prostanoic acid derivate
(Stimulates chloride secration into intestine, increasing fluid content)
Lubiprostone
Prostanoic acid derivate
(Stimulates chloride secration into intestine, increasing fluid content)
Chloride channal activators (laxatives)
Opioid receptor antagonists (laxatives)
Alvimopan
Methylnaltrexone
(Blocks intestinal U-opioid receptors but do not enter CNS, so analgesia is maintained)
Alvimopan
Methylnaltrexone
(Blocks intestinal U-opioid receptors but do not enter CNS, so analgesia is maintained)
Opioid receptor antagonists (laxatives)
5-HT4 agonists (laxatives)
Tegaserod
Activates enteric 5-HT4 receptors and increase intestinal mobility
Tegaserod
Activates enteric 5-HT4 receptors and increase intestinal mobility
5-HT4 agonists (laxatives)
Antidiarrheal drugs
Loperamide
Diphenoxylate
Colloidal bismuth compounds
Kaolin+pectin