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What Are The Differences Between Claritin And Clarinex
Metabolite: Clarinex (desloratadine) is des-loratadine and Claritin is loratadine. Clarinex (desloratadine) is the active metabolite of claritn. So (according to the manufacturer) you have the benefits of loratidine with minimal side effects. It is common in the pharmaceutical industry to use active metabolites or isomers of drugs. This potentially gives you a more active compound while minimizing the potential side effect. ...Read moreSee 1 more doctor answer
Individual issue: There is only one way to tell, trial & error.Both are helpful for many.Zyrtec has a benedryl like quality in that it crosses into the brain & can cause some sedation, while Claritin (loratadine) does not.In some small infants, their problem is less allergy and more irritant based (smoke, fumes, dust etc) and neither will help with irritants. ...Read moreSee 1 more doctor answer
Similar: Desloratidine is the active metabolite of loratidine. Loratidine is available as Claritin (loratadine) and must be metabolized to desloratidine in the liver to become the active metabolite desloratidine. However, desloratidine is available as Clarinex and is already in the more potent form. ...Read more
Different classes: Cetirizine is a new generation antihistamine - it works by blocking histamine so is helpful for allergies and hives. Singulair (montelukast) is a leukotriene receptor antagonist and blocks leukotrienes. It does not block histamine but is approved for treating allergies and asthma. Since they are different, a person can take both together if needed. ...Read more
Almost identical: Despite claims, in practice Not much. Just a minor modification of the molecule as one is a metabolic derivative of the other. The efficacy is about the same. ...Read more
I understand xyzal (levocetirizine) and dallergy are both antihistamines, but what is the difference between the two?
Side effects: Dallergy (http://www.Drugs.Com/cdi/dallergy.Html) is a brand name product composed of 2 different drugs, one of which is a 1st generation antihistamine, which can make you sleepy among other side effects, plus a decongestant, which can raise your blood pressure. Xyzal (http://www.Drugs.Com/xyzal.Html) is a brand name for levocetirizine which is a left mirror image of zyrtec which contains l&r. ...Read moreSee 1 more doctor answer
Yes : Similarity: in the 2nd generation antihistamine class of drugs. Zyrtec and Claritin (loratadine) are safe in pregnancy. Both can cause dryness and urinary symptoms as a sideffect differences: Claritin (loratadine) does not usually cause drowsiness. Zyrtec typically can. The time it takes to be effective vary as well. As far as effectiveness: depends on person. Zyrtec in some studies have been shown to be faster acting. ...Read moreSee 1 more doctor answer
Des/loratadine: Desloratadine is the primary metabolite is loratadine. The advantage is thought to be quicker onset of action and longer action of anti-histamine effect. There is a small percentage of patients in which neither drug is able to be metabolized adequately. At usual doses, both are considered non-sedating specific h1 antagonists. Clinically speaking both are useful drugs for typical allergies. ...Read more
Very similar: Zyrtec is the brand name for the molecule cetirizine, whereas xyzal is levocetirizine, the mirror image. Xyzal came to market when zyrtec was going generic and over-the-counter. There are subtle differences between the two, but they behave very similarly. ...Read moreSee 2 more doctor answers
Side-effect profile: Benadryl (diphenhydramine) is one of the first generation anti-histamines which cross the blood-brain barrier and therefore causes sedation. It also has a significant drying effect in many patients. Claritin (loratadine) is a second generation and does not cross into the brain and therefore is considered non-sedating. It is usually less drying as well. ...Read more
A purified form: Loratidine is a mixture of equal parts desloratidine & its inactive mirror image compound. In biochemistry there are many such molecules with identical chemical formula that act differently because of "handedness". The inactive part of loratidine is safely removed by your body. Effects & side-effects are the same. Major difference: loratidine is over-the-counter; desloratidine is prescription. ...Read more
Several: Sinusitis is inflammation of the sinuses due to infection, either from bacteria, viruses or fungi. The symptoms are similar to allergy in many ways include runny nose, sinus pressure, headache, congestion, postnasal drainage, and decreased sense of smell. Sinus infections may also lead to fever, while allergies never cause fever. Allergies are sensitivities to various proteins (pollen, mold, pets). ...Read more
Symptoms overlap: Rhinorrhea is the medical term for a runny nose lots of watery or mucousy nasal discahrge. Typically this comes from a cold or allergies. Rhinitis is the term for inflammation and irritation of the lining of the nose which can also come from allergies or colds. The latter often gives you a stuffy nose or post nasal drip but it can also lead to rhinorrhea. ...Read more
Diphenhydramine: Diphenhydramine is an antiallergy drug best known as benadryl (diphenhydramine). Dimenhydrinate is an over-the-counter drug used to prevent nausea and motion sickness. Dimenhydrinate is a combination of two drugs: Diphenhydramine and 8-chlorotheophylline, a chlorinated derivative of theophylline. ...Read moreSee 1 more doctor answer
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