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Drug interactions

Nusinersen + Risdiplam

Severity: Moderate

Nusinersen and Risdiplam: 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

Both drugs increase SMN protein production through SMN2 splicing modulation and are used for spinal muscular atrophy. There are no efficacy or safety data supporting concurrent use, so benefit and risk are unknown.

What this interaction means in plain words

Nusinersen and Risdiplam 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.

Nusinersen belongs to Central Nervous System; Risdiplam belongs to Musculoskeletal.

Evidence level: Low

Why it happens

Overlapping pharmacodynamic targeting of SMN2 splicing; no specific interaction mechanism has been established.

What to do

Avoid routine concomitant use and individualize treatment through a specialist neuromuscular team. If switching, follow specialist guidance and monitor motor function and safety.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Nusinersen with Risdiplam?

MediHelp rates the interaction as moderate. Nusinersen and Risdiplam 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. Both drugs increase SMN protein production through SMN2 splicing modulation and are used for spinal muscular atrophy. There are no efficacy or safety data supporting concurrent use, so benefit and risk are unknown.

How serious is the interaction between Nusinersen and Risdiplam?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid routine concomitant use and individualize treatment through a specialist neuromuscular team. If switching, follow specialist guidance and monitor motor function and safety.

What other medicines interact with Risdiplam?

MediHelp also lists interactions of Risdiplam with, for example, Alogliptin-metformin, Canagliflozin-metformin, Dapagliflozin-metformin. The full list is on the Risdiplam page.

Full monographs, dosing and an interaction checker in the MediHelp app

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