| Common Brands | Astelin, Astepro, Optivar |
|---|---|
|
Drug Class |
Antihistamine |
|
Controlled Substance Classification |
Not a controlled medication |
|
Generic Status |
Lower-cost generic available |
|
Availability |
Prescription only |
Azelastine is an antihistamine medication that is mainly prescribed to treat symptoms of allergic rhinitis and ocular allergies. The drug acts on histamine receptors (particularly H1 receptors) to reduce symptoms associated with allergic reactions.
Unlike first-generation antihistamines, which often have sedating properties, azelastine is a second-generation antihistamine. It therefore is less likely to penetrate the blood-brain barrier, making it less likely to produce drowsiness or sedation. Azelastine comes in both nasal spray and ocular (eye) drop formulations.
Azelastine is available both as a nasal spray and an ocular drop; the form of administration used depends upon the prescription type.
Nasal Spray (Azelastine Nasal Spray):
Avoid blowing your nose immediately after using the spray to allow the medication to stay in your nasal passages.
Ocular Drops (Azelastine Eye Drops):
Wash your hands after administering the drops to avoid contamination.
Azelastine works by blocking the action of histamine, a chemical released by the body in response to an allergen. Histamine binds to specific receptors called H1 receptors on cells in the body, leading to common allergic symptoms like sneezing, itching, nasal congestion, and swelling. By blocking these receptors, azelastine prevents the effects of histamine and thereby reduces allergic symptoms.
Azelastine also exerts anti-inflammatory effects, decreasing inflammation within the nasal cavity and conjunctiva. This diminishes symptoms associated with allergic rhinitis and conjunctivitis, respectively.
In addition to this, azelastine is also effective in the inhibition of other inflammatory mediators from being released from the immune cells, therefore providing the relief of complete symptoms of allergic reactions.
Azelastine is generally well tolerated but will bring about side effects since every medication has its potential list of side effects. These can include the following side effects:
Nasal Spray:
The development of sneezing upon usage.
Serious Side Effects:
Hives, dyspnea, angioedema
This is a rare but serious allergic reaction and requires emergency medical attention. Symptoms include swelling of the face, lips, tongue, or throat, and difficulty breathing.
Drowsiness: Although the risk of drowsiness is lower with azelastine compared to the first-generation antihistamines, sedation can be experienced by some patients when this drug is used along with other sedating drugs or alcohol.
Pregnancy and Breastfeeding: Azelastine is classified as Category C for pregnancy, which means that its safety during pregnancy has not been fully established. It should only be used during pregnancy if the potential benefits outweigh the risks. Azelastine also has unknown effects on breast milk.
Liver Issues: Use cautiously if you have liver problems as it may affect liver function.
Drowsiness: May cause drowsiness, so avoid activities that require full alertness (like driving).
Eye Conditions: Consult your doctor if you have any eye problems (e.g., glaucoma).
Allergic Reactions: Seek immediate medical attention if you experience severe allergic reactions, like swelling or difficulty breathing.
Central Nervous System (CNS Depressants): Azelastine may enhance the sedative effects of other CNS depressants, such as alcohol, benzodiazepines, or opioids. This could lead to increased drowsiness, dizziness, and impaired coordination.
Other Antihistamines: Using Azelastine alongside other antihistamines (either oral or nasal) can increase the risk of side effects like drowsiness, dry mouth, and dizziness. It’s generally advised to avoid combining them.
CYP450 Enzyme Inhibitors: Azelastine is metabolized by liver enzymes (CYP450), and drugs that affect these enzymes, such as ketoconazole or erythromycin, may alter Azelastine’s effectiveness or increase the risk of side effects.
The standard dosage for azelastine nasal spray and azelastine eye drops is as follows:
Nasal Spray:
Adults and children (12 years and older): One or two sprays in each nostril once or twice daily, depending upon the severity of symptoms.
Children (6 to 11 years): Usually, one spray in each nostril once or twice daily.
Ocular Drops:
Adults and children (3 years and older): One drop in the affected eye(s) twice daily.
Children under 3 years: Use should be determined by a healthcare provider, as safety and effectiveness in this age group have not been well established.
Both the nasal spray and ocular drop formulations of azelastine are usually only available by prescription. OTC versions of azelastine nasal spray may, however, be available in some regions. It would be best to follow your physician’s advice on dosing and use to maximize effectiveness and minimize side effects.
What is Azelastine?
Azelastine is an antihistamine used to relieve symptoms of allergies such as hay fever, allergic rhinitis, and conjunctivitis.
How does Azelastine work?
Azelastine works by blocking the action of histamine, a substance in the body that causes allergic symptoms.
In what forms is Azelastine available?
Azelastine is typically available in nasal spray and eye drop formulations.
What conditions is Azelastine prescribed for?
It is commonly prescribed for allergic rhinitis, allergic conjunctivitis, and sometimes for other allergy-related symptoms.
How should I use Azelastine nasal spray?
For nasal spray, gently blow your nose before use, then spray the recommended dose into each nostril. Avoid sniffing quickly after spraying.
Are there any common side effects of Azelastine?
Yes, common side effects may include drowsiness, nasal irritation, headache, and a bitter taste in the mouth.
Can Azelastine be used in children?
Yes, but the dosage may differ. Consult a healthcare provider for guidance on use in pediatric patients.
What should I do if I miss a dose of Azelastine?
If you miss a dose, take it as soon as you remember. If it’s almost time for your next dose, skip the missed one and resume your regular schedule.
Can I use Azelastine while pregnant or breastfeeding?
Consult your doctor, as the effects of Azelastine during pregnancy or breastfeeding are not fully established.
Is Azelastine safe for long-term use?
Long-term use should be monitored by a healthcare professional to assess ongoing need and any potential side effects.
Can I drink alcohol while taking Azelastine?
It’s advisable to limit alcohol consumption as it may increase drowsiness, a common side effect of Azelastine.
Are there any drug interactions with Azelastine?
Yes, Azelastine may interact with other medications, including sedatives and certain antidepressants, so always inform your doctor of your full medication list.
How quickly does Azelastine start working?
Azelastine typically starts to relieve symptoms within minutes after administration, though full effects may take a few days with continuous use.
Can Azelastine be used for asthma?
Azelastine is not a treatment for asthma but may be prescribed in conjunction with asthma medications for allergic triggers.
What should I do if I experience severe side effects from Azelastine?
If you experience severe side effects, such as difficulty breathing or swelling of the face or throat, seek medical attention immediately.
Can Azelastine cause weight gain?
Weight gain is not a common side effect of Azelastine. However, individual responses to medications can vary.
Is Azelastine available over-the-counter?
Some formulations of Azelastine, such as nasal sprays, may be available over-the-counter, while others require a prescription.
How should Azelastine eye drops be applied?
Tilt your head back, pull down the lower eyelid to create a pouch, and administer the prescribed number of drops without touching the dropper to your eye.
Can I use Azelastine with other allergy medications?
Consult your healthcare provider before combining Azelastine with other allergy medications to avoid excessive drowsiness or other interactions.
Where can I find more information about Azelastine?
For more detailed information, consult your healthcare provider or refer to the medication guide provided with your prescription.
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