Guanylate Cyclase-C Agonists Examples: Linaclotide, Plecanatide Mechanism: cGMP activates CFTR channels intestinal fluid secretion accelerate transit Uses: Chronic constipation, IBS-C Adverse Effects: Diarrhea, abdominal pain Bulk-forming safest, long-term use Osmotic acute or hepatic encephalopathy (lactulose) Stimulants short-term only Stool softeners post-surgery, hemorrhoids Lubricants avoid long-term Chloride channel activators & GC-C agonists newer agents for chronic constipation Mnemonic for Laxatives: BOSS-LC B Bulk-forming O Osmotic S Stimulant S Stool softeners L Lubricant C Chloride channel activators / cGMP agonists Laxative Types and Mechanisms for Constipation Relief Laxatives Laxatives are drugs that promote bowel movements to relieve constipation or clear the bowel before procedures
If you are aged 55 or over with weight loss and upper abdominal pain, reflux or dyspepsia, as these may require urgent referral under NICE suspected cancer guidelines
How long do the side effects of Ozempic last
Scenario 5: Clinical Trial Participation Profile: 42-year-old qualifies for Phase 3 trial, BMI 36 Coverage: Trial provides free medication for 72 weeks (18 months) Calculation: Medication cost: $0 (trial provides free) Monitoring visits: $0 (trial covers all medical costs) Travel compensation: $100-150 per visit 18 visits = $1,800-2,700 Net cost: Negative $1,800 to $2,700 (trial pays you) Post-trial transition cost: Need insurance or alternative access after trial ends Verdict: Best financial scenario but requires significant time commitment and acceptance of placebo risk
10.1038/ajh.2009.245
Nanotechnology in healthcare, and its safety and environmental risks
