Managing Constipation on Wegovy (semaglutide 2.4 mg): The HealthRX.com Step-by-Step Protocol

At a glance

  • Constipation on 2.4 mg / 24% vs 11% on placebo (2,116 vs 1,261 adults) [1]
  • Any gastrointestinal reaction / 73% vs 47% [1]
  • Severe gastrointestinal reactions / 4.1% vs 0.9% [1]
  • Stopped treatment for an adverse reaction / 6.8% vs 3.2% [1]
  • Reported after marketing / ileus, intestinal obstruction, severe constipation with fecal impaction [1]
  • Label on gastroparesis / not recommended in patients with severe gastroparesis [1]

How often does constipation occur on Wegovy 2.4 mg?

The label reports constipation in 24% of adults taking the 2.4 mg weekly injection and 11% of adults on placebo. Those numbers come from three randomized, double-blind, placebo-controlled trials in 2,116 adults with obesity or overweight and 1,261 adults on placebo, treated for up to 68 weeks [1].

Constipation is among Wegovy's most common adverse reactions, which the label defines as reactions seen in at least 5% of patients. In the same trials, 73% of people on 2.4 mg had at least one gastrointestinal reaction, against 47% on placebo [1].

Which serious events does the label list?

Severe gastrointestinal adverse reactions were reported in 4.1% of adults on Wegovy 2.4 mg and 0.9% of adults on placebo [1]. Reports received after marketing include ileus, intestinal obstruction and severe constipation with fecal impaction; the label says frequency cannot be estimated from voluntary reports [1].

The pancreatitis warning describes persistent or severe abdominal pain, sometimes radiating to the back, which may or may not be accompanied by nausea or vomiting, and says to discontinue Wegovy if pancreatitis is suspected [1].

Does Wegovy affect how fast the stomach empties?

The label states that Wegovy delays gastric emptying and that it is not recommended in patients with severe gastroparesis, a condition in which the stomach empties slowly. The label does not state that Wegovy causes gastroparesis [1].

Does the label give a plan for treating constipation?

No. Wegovy's label describes constipation as an adverse reaction and records the serious bowel events above, but it sets out no fiber target, fluid volume, stool softener, osmotic or stimulant laxative, prokinetic drug, dose hold or step-up schedule for constipation [1].

Frequently asked questions

How common is constipation with Wegovy 2.4 mg?
In the label's pooled placebo-controlled trials of the 2.4 mg weekly injection, constipation occurred in 24% of adults on Wegovy and 11% on placebo, out of 2,116 and 1,261 adults respectively [1].
Can constipation on Wegovy become serious?
Severe gastrointestinal reactions occurred in 4.1% of adults on 2.4 mg versus 0.9% on placebo, and reports after marketing include ileus, intestinal obstruction and severe constipation with fecal impaction, whose frequency cannot be estimated from voluntary reporting [1].
Does Wegovy cause gastroparesis?
The label says Wegovy delays gastric emptying and is not recommended in patients with severe gastroparesis, but it does not state that Wegovy causes gastroparesis [1].
Do people stop Wegovy because of constipation?
Overall, 6.8% of adults on 2.4 mg and 3.2% on placebo stopped treatment for an adverse reaction; the most common reasons the label names are nausea (1.8% vs 0.2%), vomiting (1.2% vs 0%) and diarrhea (0.7% vs 0.1%) [1].

References

  1. U.S. National Library of Medicine, DailyMed. Wegovy injection and Wegovy tablets (Novo Nordisk) prescribing information. Wegovy injection and Wegovy tablets (Novo Nordisk) label
Evidence overview for Managing Constipation on Wegovy (semaglutide 2.4 mg): The HealthRX.com Step-by-Step Protocol