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What happens if you stop taking antihistamines suddenly?

Stopping antihistamines suddenly can lead to withdrawal symptoms such as a return of allergy symptoms like itching and sneezing, often worse than before. Other effects may include anxiety, insomnia, headaches, and nausea. These symptoms typically start within a few days and last from days to weeks.

Key points:

• Allergy symptoms like itching and sneezing often return quickly and may worsen.
• Sleep problems and anxiety can occur, especially with sedating types.
• Headaches, nausea, and restlessness are possible short-term effects.
• Symptoms vary by dose, type used, and how long taken.

This text has been fact-checked for accuracy by medino's clinical team.