Drug interactions
Dextroamphetamine + Sodium bicarbonate
Severity: Moderate
Dextroamphetamine and Sodium bicarbonate: 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
Sodium bicarbonate alkalinizes the urine, which reduces the renal elimination of amphetamines. Dextroamphetamine exposure and duration of action can rise, increasing the risk of stimulant adverse effects such as tachycardia, hypertension, agitation and insomnia.
What this interaction means in plain words
Dextroamphetamine and Sodium bicarbonate 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.
Dextroamphetamine belongs to Central Nervous System; Sodium bicarbonate belongs to Gastrointestinal Tract.
Why it happens
Urinary alkalinization increases the non-ionized fraction of dextroamphetamine, enhancing tubular reabsorption and reducing renal clearance.
What to do
Monitor heart rate, blood pressure and signs of stimulant excess when systemic alkalinizing agents are used regularly. Consider reducing the dextroamphetamine dose if symptoms of overstimulation appear.
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 Dextroamphetamine
- Dextroamphetamine + Isocarboxazid Contraindicated
- Dextroamphetamine + Linezolid Contraindicated
- Dextroamphetamine + Methylene blue Contraindicated
- Dextroamphetamine + Phenelzine Contraindicated
- Dextroamphetamine + Rasagiline Contraindicated
- Dextroamphetamine + Safinamide Contraindicated
Other interactions of Sodium bicarbonate
- Acetylsalicylic acid + Sodium bicarbonate Moderate
- Alendronate + Sodium bicarbonate Moderate
- Amantadine + Sodium bicarbonate Moderate
- Carbonyl iron + Sodium bicarbonate Moderate
- Cefditoren + Sodium bicarbonate Moderate
- Cefpodoxime + Sodium bicarbonate Moderate
Frequently asked questions
Can I take Dextroamphetamine with Sodium bicarbonate?
MediHelp rates the interaction as moderate. Dextroamphetamine and Sodium bicarbonate 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. Sodium bicarbonate alkalinizes the urine, which reduces the renal elimination of amphetamines. Dextroamphetamine exposure and duration of action can rise, increasing the risk of stimulant adverse effects such as tachycardia, hypertension, agitation and insomnia.
How serious is the interaction between Dextroamphetamine and Sodium bicarbonate?
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 heart rate, blood pressure and signs of stimulant excess when systemic alkalinizing agents are used regularly. Consider reducing the dextroamphetamine dose if symptoms of overstimulation appear.
What other medicines interact with Dextroamphetamine?
MediHelp also lists interactions of Dextroamphetamine with, for example, Isocarboxazid, Linezolid, Methylene blue. The full list is on the Dextroamphetamine page.
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