Drug interactions
Loratadine + Olopatadine intranasal
Severity: Minor
Loratadine and Olopatadine intranasal: minor 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 are H1 antihistamines, and intranasal olopatadine can cause somnolence. Loratadine is minimally sedating, so additive impairment is modest, but combining them duplicates therapy.
What this interaction means in plain words
Loratadine and Olopatadine intranasal have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Additive H1-receptor antagonism with mild CNS effects.
What to do
Avoid unnecessary duplication of antihistamines. Counsel about drowsiness.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Loratadine
- Acrivastine + Loratadine Moderate
- Amobarbital + Loratadine Moderate
- Fentanyl + Loratadine Moderate
- Isocarboxazid + Loratadine Moderate
- Levoketoconazole + Loratadine Moderate
- Loratadine + Mavacamten Moderate
Frequently asked questions
Can I take Loratadine with Olopatadine intranasal?
MediHelp rates the interaction as minor. Loratadine and Olopatadine intranasal have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Both are H1 antihistamines, and intranasal olopatadine can cause somnolence. Loratadine is minimally sedating, so additive impairment is modest, but combining them duplicates therapy.
How serious is the interaction between Loratadine and Olopatadine intranasal?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid unnecessary duplication of antihistamines. Counsel about drowsiness.
What other medicines interact with Loratadine?
MediHelp also lists interactions of Loratadine with, for example, Acrivastine, Amobarbital, Fentanyl. The full list is on the Loratadine page.
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