Drug interactions
Dexamethasone + Sofosbuvir-velpatasvir
Severity: Moderate
Dexamethasone and Sofosbuvir-velpatasvir: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Dexamethasone is a weak-to-moderate CYP3A4 inducer, especially at higher or prolonged doses, and may lower velpatasvir exposure. Reduced antiviral levels could compromise the chance of cure. The effect depends on dose and duration of steroid therapy.
What this interaction means in plain words
Dexamethasone and Sofosbuvir-velpatasvir can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Dexamethasone belongs to Endocrine; Sofosbuvir-velpatasvir belongs to Anti Virals.
Why it happens
Dexamethasone induces CYP3A4 (and possibly other pathways), increasing metabolism of velpatasvir.
What to do
Prefer short courses or the lowest effective dexamethasone dose, or use a non-inducing alternative where possible. If prolonged high-dose therapy is needed, monitor HCV RNA response and consider specialist advice.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Sofosbuvir-velpatasvir
- Rifampin + Sofosbuvir-velpatasvir Contraindicated
- Rifapentine + Sofosbuvir-velpatasvir Contraindicated
- Sofosbuvir-velpatasvir + St john's wort Contraindicated
- Amiodarone + Sofosbuvir-velpatasvir Major
- Apalutamide + Sofosbuvir-velpatasvir Major
- Carbamazepine + Sofosbuvir-velpatasvir Major
Other interactions of Dexamethasone
- Bcg vaccine live + Dexamethasone Contraindicated
- Dexamethasone + Mifepristone Contraindicated
- Dexamethasone + Rilpivirine Contraindicated
- Dexamethasone + Smallpox vaccine live Contraindicated
- Dexamethasone + Varicella virus vaccine live Contraindicated
- Dexamethasone + Yellow fever vaccine Contraindicated
Frequently asked questions
Can I take Dexamethasone with Sofosbuvir-velpatasvir?
MediHelp rates the interaction as moderate. Dexamethasone and Sofosbuvir-velpatasvir can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Dexamethasone is a weak-to-moderate CYP3A4 inducer, especially at higher or prolonged doses, and may lower velpatasvir exposure. Reduced antiviral levels could compromise the chance of cure. The effect depends on dose and duration of steroid therapy.
How serious is the interaction between Dexamethasone and Sofosbuvir-velpatasvir?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Prefer short courses or the lowest effective dexamethasone dose, or use a non-inducing alternative where possible. If prolonged high-dose therapy is needed, monitor HCV RNA response and consider specialist advice.
What other medicines interact with Sofosbuvir-velpatasvir?
MediHelp also lists interactions of Sofosbuvir-velpatasvir with, for example, Rifampin, Rifapentine, St john's wort. The full list is on the Sofosbuvir-velpatasvir page.
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