Does Rinvoq Cause Weight Gain?
Rinvoq (upadacitinib), a JAK inhibitor for conditions like rheumatoid arthritis, psoriasis, and ulcerative colitis, lists weight gain as a possible side effect in its prescribing information. Clinical trials showed some patients experienced increased body weight, though it's not among the most common effects like infections or headaches. Post-marketing reports and patient forums also mention modest weight gain, often 5-10 pounds over months, linked to reduced inflammation improving appetite or fluid retention.[1][2]
How Common Is Weight Gain on Rinvoq?
In pivotal trials (e.g., SELECT program for RA), about 3-7% of patients reported weight increases of at least 10% from baseline, compared to 2-4% on placebo. Rates were similar across doses (15mg or 30mg daily). It's more noticeable in longer-term use (6+ months) and patients with inflammatory bowel disease.[3][4] Real-world data from AbbVie's safety database flags it as infrequent but monitorable.
Why Might Rinvoq Lead to Weight Gain?
Mechanisms aren't fully proven but include:
- JAK inhibition reducing cytokine-driven inflammation, which can boost appetite and metabolism normalization.
- Possible mild fluid retention or steroid-sparing effects if switching from corticosteroids.
- Indirect factors like better disease control enabling more activity or dietary changes. No direct evidence ties it to fat accumulation over muscle.[2][5]
Compared to Other JAK Inhibitors
| Drug | Weight Gain Frequency | Notes |
|------|-----------------------|-------|
| Rinvoq (upadacitinib) | 3-7% (≥10% increase) | Modest, dose-related |
| Xeljanz (tofacitinib) | 2-5% | Similar profile, slightly lower |
| Olumiant (baricitinib) | 4-6% | Often tied to cholesterol changes |
| Jakafi (ruxolitinib) | Up to 10% | Higher in myelofibrosis patients |
Rinvoq's rate aligns with the class but is lower than TNF inhibitors like Humira (5-8%).[3][6]
What Do Patients Report?
User reviews on Drugs.com and WebMD show ~15% mentioning weight gain (average 4.2/5 star rating overall). Complaints peak in first year: "Gained 12 lbs despite diet/exercise." Some lose it after dose adjustment or stopping. Women and those over 50 report it more.[7]
How to Manage or Avoid It