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Allergy Medicines
Antihistamines and related medicines used for hay fever, hives, allergic reactions and itching — including the older sedating antihistamines and the modern non-drowsy ones.
This page lists all 13 of them in the guide. Open any medicine for its uses, common side effects, major cautions and kidney note.
| Medicine | Brand names | Used for |
|---|---|---|
| Azelastine | Astelin, Astepro | Seasonal and year-round nasal allergies; Allergic eye itching (eye drop form) |
| Cetirizine | Zyrtec | Seasonal and year-round allergies; Hives |
| Chlorpheniramine | Chlor-Trimeton | Allergy symptoms; Cold symptoms, in combination products |
| Desloratadine | Clarinex | Seasonal and year-round allergies; Hives |
| Diphenhydramine | Benadryl | Allergy symptoms and hives; Allergic reactions, as an add-on treatment |
| Epinephrine | EpiPen, Adrenalin | Severe allergic reaction (anaphylaxis) — first-line treatment; Cardiac arrest and severe low blood pressure (hospital) |
| Fexofenadine | Allegra | Seasonal allergies; Hives |
| Hydroxyzine | Vistaril, Atarax | Itching from allergies and eczema; Anxiety, short-term |
| Levocetirizine | Xyzal | Seasonal and year-round allergies; Hives |
| Loratadine | Claritin | Seasonal and year-round allergies; Hives |
| Oxymetazoline | Afrin | Nasal congestion from colds and allergies; Nosebleeds, as an aid in clinic settings |
| Phenylephrine | Sudafed PE (oral form) | Nasal congestion (nasal spray form); Raising blood pressure in hospital (injection) |
| Pseudoephedrine | Sudafed | Nasal and sinus congestion from colds; Nasal congestion from allergies |
Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.