Drug interactions
Droxidopa + Oxymetazoline
Severity: Moderate
Droxidopa and Oxymetazoline: 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
Droxidopa is converted to norepinephrine and can cause supine hypertension, and oxymetazoline is an alpha-agonist vasoconstrictor. Systemic exposure to topical oxymetazoline is small, but additive pressor effects are possible.
What this interaction means in plain words
Droxidopa and Oxymetazoline 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.
Droxidopa belongs to Cardiovascular; Oxymetazoline belongs to Respiratory.
Why it happens
Additive adrenergic vasoconstriction: norepinephrine formed from droxidopa plus alpha-agonist activity.
What to do
Monitor supine and standing blood pressure, and avoid regular oxymetazoline use in droxidopa-treated patients with supine hypertension.
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 Oxymetazoline
- Isocarboxazid + Oxymetazoline Major
- Oxymetazoline + Phenelzine Major
- Oxymetazoline + Tranylcypromine Major
- Amitriptyline + Oxymetazoline Moderate
- Amoxapine + Oxymetazoline Moderate
- Clomipramine + Oxymetazoline Moderate
Other interactions of Droxidopa
- Droxidopa + Lisdexamfetamine Major
- Droxidopa + Methamphetamine Major
- Droxidopa + Pseudoephedrine Major
- Adrenaline-articaine + Droxidopa Moderate
- Almotriptan + Droxidopa Moderate
- Caffeine + Droxidopa Moderate
Frequently asked questions
Can I take Droxidopa with Oxymetazoline?
MediHelp rates the interaction as moderate. Droxidopa and Oxymetazoline 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. Droxidopa is converted to norepinephrine and can cause supine hypertension, and oxymetazoline is an alpha-agonist vasoconstrictor. Systemic exposure to topical oxymetazoline is small, but additive pressor effects are possible.
How serious is the interaction between Droxidopa and Oxymetazoline?
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 supine and standing blood pressure, and avoid regular oxymetazoline use in droxidopa-treated patients with supine hypertension.
What other medicines interact with Oxymetazoline?
MediHelp also lists interactions of Oxymetazoline with, for example, Isocarboxazid, Phenelzine, Tranylcypromine. The full list is on the Oxymetazoline page.
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