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GLP-1 Decoder

Rybelsus Fatigue: How Common, How Long It Lasts, What Helps

Rybelsus does not list Fatigue in its label as a side effect. What people mean by it: feeling tired or low on energy. Labels also use the word asthenia (weakness).

In the label
Not listed
Most common in the label
Nausea 20%

Rybelsus facts at a glance

How long it remains inside the body
100%50%25%0%07 d14 d21 d28 d35 d50%25%12.5%time after the dose

Its half-life is about 1 week: after 7 d, half is gone, and five half-lives leave about 3% (35 d).

Weight loss during the main trial
Rybelsus (PIONEER 1)3.7 kgPlacebo1.4 kg

Over 26 weeks in type 2 diabetes, PIONEER 1 reported 3.7 kg lost compared with 1.4 kg on placebo.

Costs over time
20262027$1,027.51$0List priceSelf-pay

Listed monthly prices in US dollars include the list price and self-pay offers, all taken from the maker's price page.

Sources: FDA label (DailyMed), healthsystemtracker.org, Novo Nordisk pricing, Novo Nordisk.

What the Rybelsus label lists instead

Rybelsus does not list Fatigue in its label. These five are the side effects that the label reports most often.

Table 2. For Semaglutide Tablets-Treated Patients who had Type 2 Diabetes Mellitus, the findings included Adverse Reactions from Placebo-Controlled Trials Reported in ≥5%
Side effectPlaceboRybelsus 7 mgRybelsus 14 mgMore than placebo, 14 mg
Nausea6%11%20%+14 points
Abdominal Pain4%10%11%+7 points
Diarrhea4%9%10%+6 points
Decreased appetite1%6%9%+8 points
Vomiting3%6%8%+5 points

Rybelsus label (DailyMed). This is the source.

Comparing Fatigue with Rybelsus and other GLP-1s

Each label covers the trials for its own drug, but those studies included different groups of people. Think of it as a rough guide.

Fatigue across GLP-1 labels
MedicineHighest rate in the labelDose groupPlaceboPeople in the trials
Wegovy11%2.4 mg5%Adults with obesity or overweight (weight management)
Foundayo9%17.2 mg4%Adults with obesity or overweight (weight management)
Saxenda7.5%all doses4.6%Adults with obesity or overweight (weight management)
Zepbound7%15 mg3%Adults with obesity or overweight (weight management)
Trulicity5.6%1.5 mg2.6%Adults with type 2 diabetes
Byetta4%all doses2%Adults with type 2 diabetes
OzempicListed, no rate given–––
MounjaroListed, no rate given–––
RybelsusNot listed–––
VictozaNot listed–––

Wegovy label (DailyMed), Zepbound label (DailyMed), Foundayo label (DailyMed), Trulicity label (DailyMed), Saxenda label (DailyMed), Byetta label (DailyMed). These are the sources.

FDA label (DailyMed). This is the source.