pharm chart Flashcards
Anti-diarrheals Opioid
Loperamide [Imodium]
MOA of Loperamide [Imodium]
Inhibition of presynaptic cholinergic nerves in colonic submucosal and myenteric plexus slows transit time
Indications of Loperamide [Imodium]
Mild to moderate diarrhea w/o obstruction,
IBD, IBS
Anti-diarrheals Non- Opioid
Kaolin-Pectin
MOA of Kaolin-Pectin
A clay (Kaolin) and a plant polysaccride (Pectin) combination that absorbs fluids & bacterial toxins
indications of Kaolin-Pectin
Mild diarrhea
Anti-diarrheals Laxative
Dietary Fiber
[Metamucil, Citrucel, Fibercon]
MOA of Dietary Fiber
[Metamucil, Citrucel, Fibercon]
Absorb and bind fluids, provides stool bulk
Indications of Dietary Fiber
[Metamucil, Citrucel, Fibercon]
Mild to moderate diarrhea,
constipation
Anti-Diarrheal
Synthetic Somatostatin Analogue
Octreotide [Sandostatin]
MOA of Octreotide [Sandostatin]
Synthetic analogue of somatostatin with longer half-life;
inhibits bowel secretion;
dose related impact on motility;
splanchnic arteriole constriction
Indications of Octreotide [Sandostatin]
Diarrhea sec to bowel dysmotility, carcinoid, VIP-oma, pancreatic fistulas, vagotomy, dumping syndrome, short bowel syndrome, HIV diarrhea; GI bleeding
Anti-diarrheals
Bismuth Subsalicylate [Pepto- Bismol]
MOA of Bismuth Subsalicylate [Pepto- Bismol]
Anti-secretory (salicylate) and anti-microbial (bismuth) action
Indications of Bismuth Subsalicylate [Pepto- Bismol]
sxs treatment of mild, nonspecific diarrhea,
traveler’s diarrhea,
as part of multi- drug regimen for H. pylori
what are the 2 
5ASA Anti- Inflammatories
- Mesalamine or 5-ASA [Asacol]
- Sulfasalazine [Azulfadine]
5-ASA + sulfapyridine
what is the MOA of the 5ASA Anti- Inflammatories
Local colon anti- inflammatory action and systemic prostaglandin inhibition
Inidacation of Mesalamine or 5-ASA [Asacol]
Ulcerative colitis, proctosigmoiditis, proctitis
Indication of Sulfasalazine [Azulfadine]
5-ASA + sulfapyridine
Ulcerative colitis,
rheumatoid arthritis,
Crohn’s disease, psoriasis
Purine Analogues Immunosuppressant
Azathioprine [Imuran]
MOA of Azathioprine [Imuran]
Inhibits synthesis of DNA, RNA, proteins
Indications of Azathioprine [Imuran]
Steroid sparing for steroid dependent Crohn’s Disease, Ulcerative colitis;
maintain remission in CD;
fistulizing CD;
kidney transplant, rheumatoid arthritis
Purine Analogues Anti-Inflammatory
Methotrexate [Rheumatriex]
MOA of Methotrexate [Rheumatriex]
Decreases protein synthesis via inhibition of dihydrofolate reductase;
inhibits interleukin-1;
incr release of anti- inflammatory adenosine
Indications of Methotrexate [Rheumatriex]
Crohn’s Disease;
+/- Ulcerative colitis;
psoriasis, rheumatoid arthritis
Anti-TNF Alfa Compounds
Infliximab [Remicade]
MOA of Infliximab [Remicade]
Decr TH1-cell activation/proliferation;
block TNF alfa receptor (TNFR) & decr cytokine (IL-12) release;
decr leukocyte migration, fibroblast collagen production, & hepatic acute phase reactants;
incr apoptosis of activated cells
Indications of Infliximab [Remicade]
Acute and maintenance Tx mod to severe Crohn’s Disease & Ulcerative colitis
Anti-integrin
Natalizumab
MOA of Natalizumab
Inhibit integrins on leukocyte surface and inhibit their adhesion to vascular endothelium and their migration into tissue
Indications of Natalizumab
Subset of patients with mod to severe Crohn’s ds who have failed other therapies
Ursodeoxycholic Acid Gallstone Dissolution Agent
Ursodiol [Actigall]
MOA of Ursodiol [Actigall]
Reduces hepatic secretion of cholesterol reducing enterohepatic circulation of cholesterol, reduces hepatic absorption of cholesterol;
metabolized to lithocolic acid by colonic bacteria; excreted in stool and bile
Indications of Ursodiol [Actigall]
Gallstones;
prevention of stones in rapid weight loss,;
primary billiary cirrhosis
Laxative Stimulant
Senokot [Senna]
MOA of Senokot [Senna]
stimulate enterocytes, enteric neurons,
GI smooth muscle inducing low-grade inflammation, fluid accumulation and
stimulate intestinal motility
INdications of Senokot [Senna]
constipation (without bowel obstruction)
Laxative Calcium Channel Activator
Lubiprostone [Amitiza]
MOA of Lubiprostone [Amitiza]
Activates calcium channels to increase bowel fluid secretion and motility
Indications of Lubiprostone [Amitiza]
Chronic idiopathic constipation;
IBS constipation- dominant in women >18yo;
opioid induced constipation
Laxative cGMP agonist
Linaclotide [Linzess]
MOA of Linaclotide [Linzess]
Agonizes guanylate cyclase-C (cGMP) on luminal surface of bowel epithilium, increases cGMP resulting in chloride and bicarbonate secretion into intestinal lumen
Indications of Linaclotide [Linzess]
IBS-C (in adults not responsive to PEG); or, Chronic Idiopathic Constipation (CIC) in adults
Osmotic Laxative; PEG
Polyethylene Glycol (PEG) 3350 Electrolyte Solution [GoLYTELY] [MiraLax]
MOA of Polyethylene Glycol (PEG) 3350
Electrolyte Solution [GoLYTELY] [MiraLax]
Causes water retention in stool and incr stool frequency
Indications of Polyethylene Glycol (PEG) 3350
Electrolyte Solution [GoLYTELY] [MiraLax]
Occasional Constipation
Short Term Use
Osmotic Laxative
Lactulose [Enulose]
MOA of Lactulose [Enulose]
a) synthetic disaccharide (osmotic) laxative;
b) bacterial digestion of lactulose produces acid pH converting NH3 to NH4+ which can’t cross gut wall;
c) enhances diffusion NH3 from serum into gut lumen
Indications of Lactulose [Enulose]
Px & Tx portal- systemic encephalopathy (PSE)
Magnesium Laxative
MgCitrate [Citroma]
MOA of MgCitrate [Citroma]
Osmotic retention of bowel fluid distending colon and increasing peristalsis
INdications of MgCitrate [Citroma]
Occasional constipation, study prep
Stool Softener
Docusate Na [Colase]
MOA of Docusate Na [Colase]
….
Indications of Docusate Na [Colase]
…..
Anticholinergic, Anti-emetic & anti-vertigo
dermal patch
Scopolamine [Transderm Scop]
MOA of Scopolamine [Transderm Scop]
Blocks activity of acetylcholine at PSNS sites in smooth muscle, secretory glands, and CNS
Fast onset, short duration
INdications of Scopolamine [Transderm Scop]
Nausea, vertigo
H1 Antagonist Antihistamine
Meclizine [Antivert]
MOA of Meclizine [Antivert]
Central anticholinergic blockage in chemoreceptor trigger zone and decreases excitability of vestibular- cerebellar pathways
Indications of Meclizine [Antivert]
Prevention & treatment of motion sickness
Phenothiazines
Promethazine [sPhenergan]
MOA of Promethazine [sPhenergan]
Blocks CNS dopamine receptors (D2); competes for H1 receptors in brain and systemically
(anti-histamine and anti-dopaminergic)
Indications of Promethazine [sPhenergan]
Anti-emetic, motion sickness,
sedative
Butyrophenones
Typical anti- psychotic
Haloperidol [Haldol]
MOA of Haloperidol [Haldol]
Blocks post-synaptic mesolimbic D1 & D2 receptors; also suppresses the reticular activating system (RAS) thereby reducing emesis
Indications of Haloperidol [Haldol]
Anti-emetic; schizophrenia Tourette’s disorder;
emergency sedation of agitated- aggressive patients (off label)
Benzamides
some refer to as pro kinetic
Metoclopromide [Reglan]