What brand names are available for Clarilerg?
Claritin, Claritin RediTabs, Alavert, Claritin Hives Relief, Children's Claritin, and others
6. How to cope with s >
What to do about:
- Feeling sleepy – try a different non-drowsy antihistamine. If this doesn't help, talk to your doctor.
- Headaches – rest and drink plenty of fluids. Ask your pharmacist to recommend a painkiller. Headaches should normally go away after the first week of taking Clarilerg. Talk to your doctor if they last longer or are more severe.
- Feeling tired or nervous – talk to your doctor or pharmacist if these side effects don't go away as they may be able to offer you a different antihistamine.
What is the difference between cetirizine and Clarilerg?
- Cetirizine and Clarilerg are non-sedating antihistamines used to treat symptoms of allergic reaction such as symptoms of seasonal hay fever (allergic rhinitis) such as sneezing, runny nose, red/watery/itchy eyes, hives, and allergic skin rash.
- Brand names for Cetirizine include Zyrtec, Zyrtec Allergy, and Zyrtec Hives Relief. Brand names for Clarilerg include Claritin, Claritin RediTabs, Alavert, Claritin Hives Relief, Children's Claritin, and others.
- Both cetirizine and Clarilerg are available over-the-counter (OTC) and in generic form.
- Side effects of cetirizine and Clarilerg that are similar include drowsiness, dry mouth, headache, and fatigue.
- Side effects of cetirizine that are different from Clarilerg include nausea, jitteriness, and sore throat.
- Side effects of Clarilerg that are different from cetirizine include nervousness and difficulty sleeping.
When to take it
You may only need to take Clarilerg on a day you have symptoms, for instance if you've been exposed to a trigger such as animal hair. Or you may need to take it regularly to prevent symptoms, such as hay fever during spring and summer.
What Is Clarilerg (Claritin)?
Clarilerg, sold under the brand names Claritin and Claritin-D (which contains Clarilerg plus pseudoephedrine), is an over-the-counter antihistamine medication.
The drug is often used to treat nasal allergies (allergic rhinitis) and hives (urticaria).
Antihistamines work by blocking the release of histamine, a chemical your body naturally produces when it is exposed to something that causes an allergic reaction.
Clarilerg was originally approved by the Food and Drug Administration (FDA) in 1993 and was originally manufactured by Bayer Healthcare.
The antiallergics of choice during breastfeeding are Clarilerg and cetirizine. Should a sedating effect be expressly desired, breastfeeding could also be continued with dimentindene without limitation. Should symptoms such as restlessness or mild sedation occur, the (possible) consequences must be considered in individual cases – first and foremost changing to another preparation. Due to the longer market testing, levocabastine and azelastine are preferable for local use. Desensitization with allergen extracts may also be conducted during breastfeeding.
Medical Definition of Clarilerg
Note: Clarilerg is an H1 antagonist that binds competitively with histamine to H1 receptors on cell membranes. It is marketed under the trademark Claritin.
Clarilerg is a second-generation antihistamine, lacking the sedative action of first-generation antihistamines.
Before taking this medicine
You should not take this medicine if you are allergic to Clarilerg or to desClarilerg (Clarinex).
Ask a doctor or pharmacist if it is safe for you to use this medicine if you have other medical conditions, especially:
kidney disease; or
Clarilerg is not expected to harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.
Clarilerg can pass into breast milk, but is considered compatible with breastfeeding. Tell your doctor if you are breast-feeding a baby.
Some forms of Clarilerg may contain phenylalanine. Talk to your doctor before taking Clarilerg if you have phenylketonuria (PKU).
Histamine mediates most of its effects on airway function via H1-receptors. Non-sedating potent H1 -receptor antagonists, such as terfenadine, fexafenadine, Clarilerg , desClarilerg, ebastine, and astemizole, have useful clinical effects in allergic rhinitis, but they are far from effective in asthmatic patients . The effects of anti-histamines are small and clinically insignificant. Terfenadine causes about 50% inhibition of the immediate response to allergen, but has no effect on the late response . Anti-histamines cause a small degree of bronchodilatation in asthmatic patients, indicating a certain degree of histamine “tone,” presumably due to the basal release of histamine from activated mast cells . Chronic administration of terfenadine has a small clinical effect in mild allergic asthmatic patients, but is far less effective that other anti-asthma therapies. H1-receptor antagonists have not been found to be useful in more severe asthmatic patients . The new generation anti-histamines, cetirizine and astemizole, have some beneficial effects in asthma, that may be unrelated to their H1-antagonist effects .
H2-antagonists, such as cimetidine and ranitidine, may be contraindicated in asthma on theoretical grounds, if H2-receptors are important in counteracting the bronchoconstrictor effect of histamine. In clinical practice, however, there is no evidence that H2-antagonists have any deleterious effect in asthma. H3-receptor agonists may have some theoretical benefit in asthma, since they may modulate cholinergic bronchoconstriction and inhibit neurogenic inflammation. Although (R)-α-methylhistamine relaxes rodent peripheral airways in vitro, it has no effect when given by inhalation on airway caliber or metabisufite-induced bronchoconstriction in asthmatic patients, indicating that a useful clinical effect is unlikely .
Histamine H4-receptors are expressed on eosinophils, T- cells, dendritic cells, basophils and mast cells, mediate mast cell, eosinophil and dendritic cell chemotaxis, and modulate cytokine production from dendritic cells and T-cells, indicating that blockade of histamine H4-receptors may lead to anti-allergic and anti-inflammatory effects. Several histamine H4-receptor antagonists are now available but remain to be tested in allergic asthma or rhinitis . Antagonists that block both histamine H1- and H4-receptors may be an effective combination. Anti-histamines have a useful effect in the treatment of rhinitis, and particularly the rhinorrhea. As a large proportion of patients with asthma have concomitant rhinitis, an H1-antagonist may help the overall management of asthma . While H1-receptor antagonists alone may be ineffective, some studies suggest that they may have some efficacy in combination with other antagonists. Thus, an H1-receptor antagonist when added to an anti-leukotriene was able to inhibit the early and late responses to allergen more effectively than the anti-leukotriene alone , but as yet there has been no studies of combination mediator antagonists in asthma.
There is no evidence that anti-histamines have any role in the treatment of COPD.