GI Pharmacology Flashcards
PPI with the least drug to deug interactions?
Pantoprazole
Site of absorption of PPI ?
Proximal small intestine / duodenum
H2 blocker with CYP450 inhibition.
Cimetidine
MOA of bismuth subsalicylate?
Forms protective coating on ulcerated tissue.
MOA of Psyllium?
Bulk forming laxative
Metoclopramide and domperidone acts as prokinetic agents by what action?
Blocking D2 receptors
Melanosis coli may occur as a result of taking what drug?
Senna (anthraquinone containing laxatives).
Melanosis coli: non-inflammatory bowel entity in which a brown or black pigment is deposited in the colorectal mucosa.
Anthraquinone laxatives: Senna, Rhubarb, Aloe, Rhamnus, Frangula.
Bisacodyl is what type of laxative?
Stimulant ( directly stimulates the ENS)
Deug that may be used in the dissolution of small cholesterol gallstones.
Ursodeoxycholic acid
Side effects with long term use of PPI?
- Vitamin B12 deficiency
- Pneumonia
- Small benign gastric fundic gland polyps
Increase motility and resting tone of GIT for gastroparesis?
Metoclopramide
Metoclopramide adverse effects?
- Parkinsonian features
- Tarditive dyskinesia
- Galactorrhea
- Akathisia
Blocks muscarinic receptors for treatment of nausea & vomiting?
Hyoscine
Loperamide contraindications?
- Bloody stools
- Mucoid stools
- Young children
- Acute ulcerative colitis
Other drug that may be given to a patient with alopecia, already given with Minoxidil?
Finasteride