Drug interactions
Memantine-donepezil + Sodium lactate
Severity: Moderate
Memantine-donepezil and Sodium lactate: 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
Lactate is metabolized to bicarbonate and can raise urinary pH, reducing memantine elimination. Higher memantine exposure may cause more neuropsychiatric adverse effects.
What this interaction means in plain words
Memantine-donepezil and Sodium lactate 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.
Why it happens
Urine alkalinization increases memantine reabsorption in the renal tubule, decreasing clearance.
What to do
Monitor for confusion, dizziness and agitation if large or repeated lactate doses are given and consider reducing the memantine dose.
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 Memantine-donepezil
- Dronedarone + Memantine-donepezil Contraindicated
- Memantine-donepezil + Thioridazine Contraindicated
- Amantadine + Memantine-donepezil Major
- Amiodarone + Memantine-donepezil Major
- Amisulpride + Memantine-donepezil Major
- Amitriptyline + Memantine-donepezil Major
Frequently asked questions
Can I take Memantine-donepezil with Sodium lactate?
MediHelp rates the interaction as moderate. Memantine-donepezil and Sodium lactate 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. Lactate is metabolized to bicarbonate and can raise urinary pH, reducing memantine elimination. Higher memantine exposure may cause more neuropsychiatric adverse effects.
How serious is the interaction between Memantine-donepezil and Sodium lactate?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for confusion, dizziness and agitation if large or repeated lactate doses are given and consider reducing the memantine dose.
What other medicines interact with Memantine-donepezil?
MediHelp also lists interactions of Memantine-donepezil with, for example, Dronedarone, Thioridazine, Amantadine. The full list is on the Memantine-donepezil page.
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