Nenäantihistamiini

Nenäantihistamiini, known in English as nasal antihistamines, are medications used to treat the nasal symptoms of allergies, such as sneezing, runny nose, and itching. They work by blocking the action of histamine, a chemical released by the body during an allergic reaction. Histamine is responsible for many of the characteristic symptoms of allergies.

Nasal antihistamines are administered directly into the nasal passages, allowing them to act locally and provide rapid relief. They are available in both prescription and over-the-counter forms. Common side effects can include drowsiness, dry mouth, and dizziness, although newer formulations are often designed to minimize these effects. It is important to follow the dosage instructions provided by a healthcare professional or on the product packaging.

These medications are particularly effective for allergic rhinitis, commonly known as hay fever. They can be used on an as-needed basis for symptom relief or as a regular treatment during allergy seasons. Unlike some other allergy medications, nasal antihistamines generally do not cause rebound congestion, which is a worsening of nasal symptoms after prolonged use. When used as directed, they are considered a safe and effective option for managing nasal allergy symptoms.