Desloratadine

Desloratadine

Desloratadine, a powerful antihistamine, has become a reliable solution for many allergy sufferers. This medication offers respite from common symptoms like runny nose, sneezing, and itchy eyes that can make daily life uncomfortable. Desloratadine's uses extend beyond just seasonal allergies. This versatile pill also influences year-round allergic reactions and even helps with certain skin conditions. As we explore the world of this antihistamine, we'll understand how it works, its proper use, potential side effects, and significant interactions to keep in mind.

What is Desloratadine?

Desloratadine is a powerful second-generation antihistamine that provides relief from various allergic conditions. It belongs to a class of medications known as tricyclic antihistamines and has a selective and peripheral H1-antagonist action. This means it targets explicitly and blocks histamine receptors in the body, preventing the activation of cells that cause allergic reactions.

Desloratadine is the active metabolite of loratadine, another well-known antihistamine. What sets desloratadine apart from many other antihistamines is its long-lasting effect and its ability to avoid causing drowsiness.

Desloratadine Uses

Desloratadine is helpful in various allergic conditions, providing relief for both adults and children. This powerful antihistamine addresses a wide range of symptoms, such as:
Allergy Symptom Relief:

The primary use of desloratadine tablets is to alleviate hay fever symptoms and other allergies, like seasonal allergic rhinitis and perennial allergic rhinitis.
Urticaria Treatment:

Desloratadine helps to relieve uncomfortable symptoms of urticaria or hives, providing much-needed relief to those suffering from this condition.
One of the key advantages of desloratadine is its non-sedating properties. Unlike many other antihistamines, desloratadine doesn't enter the brain from the bloodstream. This characteristic means it doesn't cause drowsiness, a common side effect of many allergy medications.

How to Use Desloratadine?

Desloratadine comes in various forms, including tablets, oral solutions, and orally disintegrating tablets. Each form has specific instructions for proper use to ensure maximum effectiveness. It's crucial to follow the directions on the prescription label carefully.

• Patients take desloratadine tablets once a day, with or without food.
• For the syrup form of desloratadine, accurate measurement is key. Parents or caregivers should use a calibrated measuring dropper or syringe to measure the correct dose for children. 
• Ensure hands are dry before handling the orally disintegrating tablet.

Dosage Guidelines

Dosage varies depending on the patient's age and the condition being treated. Here are the general guidelines:
For chronic hives:

• Children 12 years and older and Adults: 5 mg OD (once a day) 
• Children 6 to 11 years: 2.5 mg OD (once a day)
• Children 4 to 5 years: 1.25 mg once daily
• Children under four years: Not recommended

For hay fever, the dosage is similar to that for chronic hives.

Side Effects of Desloratadine Tablet

While desloratadine tablets provide relief from allergy symptoms, they may also cause some unwanted effects.

Common Side Effects:

The most frequently reported side effect of the desloratadine pill is headache. Some people may also experience:

• Dizziness
• Dry mouth
• Fatigue or unusual tiredness
• Sleepiness or drowsiness
• Nausea
• Less Common Side Effects

Some individuals may experience:

• Dyspepsia (indigestion, stomach discomfort, or heartburn)
• Myalgia (muscle aches or joint pain)
• Pharyngitis (sore throat or hoarseness)
• For women, painful menstruation (dysmenorrhea) has been reported as a less common side effect.

Rare but Serious Side Effects

In rare cases, desloratadine may cause more serious side effects that require immediate medical attention. These include:

• Anaphylaxis: This severe allergic reaction can cause numerous symptoms, such as difficulty swallowing, dizziness, fast heartbeat, shortness of breath, and swelling of the face, tongue, or throat.
• Difficulty breathing or laboured breathing
• Swelling in various parts of the body
• Tachycardia (Abnormally fast heart rate)
• Urticaria or hives or welts, often accompanied by itching and skin redness.

Precautions

Patients who take desloratadine pills must exercise caution and follow precautions to ensure the safety and efficacy of the medication, including: 

• Allergies to desloratadine, loratadine, or any other medications 
• Kidney or liver disease
• Pregnancy and breastfeeding
• •Some desloratadine products contain sugar or aspartame. Patients with diabetes or phenylketonuria (PKU) should consult their doctor about using the medication safely.
• Before undergoing any surgical procedure, patients should inform their doctor about all the drugs they use, including desloratadine.
• Desloratadine may interact with other medications. Patients should provide a comprehensive list of all prescription and non-prescription drugs, vitamins, nutritional supplements, and herbal products they are taking or plan to take. 

How Desloratadine Works

Desloratadine is a powerful antihistamine that affects allergic reactions. This medication belongs to a class of drugs known as second-generation H1-receptor antagonists. It has a selective and peripheral H1-antagonist action, which means it explicitly targets histamine receptors outside the central nervous system.

By preventing histamine from attaching to these receptors, desloratadine stops the chain reaction that causes allergy symptoms. This targeted approach allows it to effectively manage various allergic conditions without causing excessive side effects of many other antihistamines.

Can I Take Desloratadine with Other Medicines?

Desloratadine can interact with various medications, and it's crucial to understand these interactions to ensure safe and effective treatment. Some medicines that interact with desloratadine include:

• Erythromycin
• Ketoconazole
• Pitolisant
• Skin test antigens (multiple)
• Tuberculin purified protein derivative

The risk or severity of central nervous system (CNS) depression can increase when desloratadine is combined with certain medications. For example:

• Acetazolamide
• Acetophenazine
• Aclidinium
• Acrivastine
• Benzodiazepine

In some cases, other medications have been suspected of causing depression when used alongside desloratadine. These include:

• Diphenhydramine
• Levothyroxine
• Loratadine 
• Montelukast
• Paroxetine
• Permethrin
• Tolterodine
• Triamcinolone
• Xylometazoline

Patients using antidepressants or those with a history of depression should exercise caution and consult their doctor before taking desloratadine. 

Conclusion

Desloratadine works by selectively blocking histamine receptors, preventing the cascade of allergic reactions in the body. Its non-sedating properties and effectiveness in managing various allergic conditions make it a valuable tool in treating allergies. The desloratadine's unique pharmacological profile allows it to relieve allergy symptoms while minimising side effects and drug interactions. Patients should consult their doctor to ensure safe usage, especially if they have existing health conditions or are taking other drugs. 

FAQ's

1. What is desloratadine used for?

Desloratadine is used for various allergic conditions, providing relief for both adults and children. The following are some deslor tablet uses:

• Seasonal allergic rhinitis (hay fever)
• Perennial allergic rhinitis
• Chronic idiopathic urticaria (hives)

It helps to alleviate symptoms like sneezing, runny nose, itchy & watery eyes, and nasal congestion. 

2. Can I take desloratadine twice a day?

Desloratadine is typically taken once daily. The long half-life of desloratadine, approximately 27 hours, allows for once-daily dosing. Taking it twice daily is not recommended and may increase the risk of side effects. If you feel that your current dosage is not providing adequate relief, it's essential to consult your doctor rather than adjust the dose on your own.

3. Who Cannot take desloratadine?

Certain people should exercise caution or avoid taking desloratadine:

• People allergic to desloratadine or any of its ingredients
• Children under 12 years of age (for tablet form)
• Infants and children up to 4 years of age (for syrup form)
• Patients with severe kidney or liver conditions
• Additionally, patients with phenylketonuria (PKU) should be cautious, as some forms of desloratadine may contain aspartame.

4. Is desloratadine safe for kidneys?

Desloratadine is generally considered safe for most people. However, patients with kidney problems may need special consideration. A study showed that patients with renal impairment had approximately a 2.5-fold increase in exposure to desloratadine compared to those with normal renal function. Therefore, individuals with kidney problems should consult their doctor before taking desloratadine, as they may require dose adjustments.

5. Why is desloratadine taken at night?

While desloratadine can be taken at any time of day, some people prefer taking it at night. Here's why:

• Desloratadine has a long half-life of approximately 27 hours, providing 24-hour coverage regardless of when taken.
• Evening dosing may provide better relief for peak morning symptoms due to the medication's pharmacokinetics.

6. Is desloratadine safe for the liver?

Desloratadine is generally considered safe for most people, but those with liver problems should exercise caution. Patients with liver impairment may process the drug less efficiently. It can lead to higher plasma concentrations and a longer medication half-life, increasing the risk of side effects. Individuals with liver issues must consult their doctor before taking desloratadine.