Can Wegovy (semaglutide) cause fatigue or tiredness?
Yes. People taking Wegovy can experience tiredness as a side effect. In safety information, fatigue and related symptoms are included among the possible adverse reactions for semaglutide-containing medicines.
What does “tired” from Wegovy usually feel like?
Reports vary, but patients commonly describe feeling weak, low-energy, or unusually fatigued. This can overlap with other effects of the medication, such as nausea or reduced food intake, which may also leave people feeling drained.
Is tiredness more common with nausea or stomach side effects?
Often, yes. When Wegovy causes nausea, vomiting, diarrhea, or reduced appetite, the resulting lower intake of food and fluids, plus the body’s stress from gastrointestinal side effects, can contribute to feeling tired.
When should you call a clinician?
Get medical advice promptly if tiredness is severe, sudden, or comes with concerning symptoms such as dehydration (for example, dizziness, very dark urine, fainting), persistent vomiting, or signs of low blood sugar—especially if you use medicines that can lower glucose (like insulin or sulfonylureas).
Can adjusting the dose help?
Many people who feel side effects, including fatigue, notice improvement when they pause escalation or when their prescriber adjusts titration (the step-up schedule to the target dose). If tiredness starts soon after a dose increase, it’s worth discussing with your clinician.
What can you check besides Wegovy?
Because “tiredness” has many causes, clinicians also consider other contributors like sleep issues, anemia, thyroid problems, infection, stress, and medication interactions.
Source