RHAPSIDO

What it isAn oral covalent BTK inhibitor for chronic spontaneous urticaria and symptomatic dermographism not controlled by antihistamines.
Why this oneIt is an oral alternative to injectable biologics and requires no routine laboratory monitoring.
What limits itBleeding changes prescribing; interrupt around surgery and weigh antithrombotics. Avoid strong or moderate CYP3A4 inhibitors or inducers.
Animated chart of estimated U.S. prescriptions per year, Tyrosine kinase inhibitors (2001–2026). Remibrutinib enters in 2025 (estimated).
Principal riskBleeding
Legacy pregnancy categoryN/A (post-2015 labeling)
Defining liabilityBleeding and perioperative interruption
Read the full label on DailyMed ↗
NO BOXED WARNINGS
| FDA dosing | Population | Start | Target | Max |
|---|---|---|---|---|
| Chronic spontaneous urticaria (symptomatic despite H1 antihistamine treatment) | Adults | 25 mg BID | 25 mg BID | 25 mg BID |
| Symptomatic dermographism (symptomatic despite H1 antihistamine treatment) | Adults | 25 mg BID | 25 mg BID | 25 mg BID |
Renal No clinically significant PK difference in mild–severe impairment (eGFR 15-89); no adjustment stated
Hepatic Avoid use in mild, moderate, or severe hepatic impairment (Child-Pugh A, B, and C) — exposure increased
Available strengths
Pregnancy Insufficient human data; rabbit external malformations at exposures 141x MRHD; pregnancy exposure registry available (Novartis 1-888-669-6682)
Lactation No data in human or animal milk; weigh benefits of breastfeeding against maternal need and potential infant risk
| Strength | #/mo | generic $/mo | brand $/mo | CostPlus | |
|---|---|---|---|---|---|
| 25 mg | tab | 60 BID | — | $4,347.73 | not offered |
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