Soy alérgico a esto.

When to use

Essential for communicating a potentially life-threatening allergy to food, medication, or other substances.

How it works

This sentence uses the verb 'ser' (to be) with the adjective 'alérgico/a' (allergic) and the preposition 'a' (to).

• Soy
• alérgico a
• esto

Formality

This phrase is direct and vital for safety, usable in any context where the information needs to be conveyed quickly.

Notes

Critical allergy warning. Neutral everyday wording.