Generic Zyrtec (Cetirizine) is a drug belonging to antihistamine category. It operates by blocking the action of histamine, a particle within the body that triggers hypersensitive (allergy) symptoms. It is used to briefly relieve the signs of hay fever (pollen/dirt allergies) as well as allergy caused by other substances (mites, pet dander, molds, cockroaches etc.). The signs and symptoms include sneezing; drippy nose; scratchiness, red and watering eyes; as well as itchy nasal area or neck. Generic Zyrtec can also treat hives-triggered itchiness and inflammation. However, it is not used to prevent hives or any other hypersensitive skin reactions. If you are using a product of Cetirizine combined with other drugs, go through the information provided on the label, or ask the doctor to learn more.
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The active ingredient of Generic Zyrtec is Cetirizine hydrochloride. Its chemical name is (±) - [2- [4- [(4-chlorophenyl) phenylmethyl] -1- piperazinyl] ethoxy] acetic acid, dihydrochloride; and its formula is C21H25ClN2O3•2HCl while it has a molecular mass of 461.82. It is available in two strengths: 5mg and 10mg. Its inactive ingredients are: micro-crystalline cellulose, polyethylene oxide (PEO), octadecanoic acid, lactose, colloidal silicon dioxide, titanium (IV) oxide and croscarmellose sodium.
Cetirizine Hydrochloride is an anti-histamine drug that has the ability to inhibit the peripheral histamine H1-reeceptors. The antihistaminic property of Cetirizine has been apparently described in humans and animals. After oral administration of Zyrtec (Cetirizine), the production of histamine is drastically reduced that further decreases the irritation and inflammation of upper airways, thereby giving relief from allergic reaction and its signs and symptoms.
Generic Zyrtec is available in tablet form for oral consumption, which has to be ingested with or without
This anti-allergic medicine is available in 5mg and 10mg potency; usually, 10mg tablet is prescribed once in a day
People above 65 years of age should ask their physician about the appropriate dose
Use Zyrtec just as directed by the physician. Do not take less or more of this medication without consulting the doctor.
Take this medicine the same time each day. Stick to the directions given on the drug’s package label.
Ask your doctor before using Cetirizine for treating hives that are blistered or bruised with ulceration. Contact your physician in case you experience these types of skin eruptions during treatment.
Consult your doctor if your complaints do not improve within first three days of therapy, or if it lasts for more than six
While undergoing treatment with Zyrtec, one may experience impairment in normal reactions and thinking; therefore, it is advisable to stay away from outdoor activities that require attention (like riding and driving) under the influence of this drug.
Avoid alcohol and other stimulants along with the dosage, because they can increase the side effects of Cetirizine
Unknowingly, if you skip the dose, take it as soon as you remember; but if the skipped dose nears your next prescribed dose, do not take it, ask your physician for further dosage schedule
Never exceed the dose, as overdose may lead to restlessness, drowsiness and nervousness
Store this anti-allergic medication in cool, dry place, and away from moisture and sunlight
It is always safe to use conventional medications after consulting the medical advisor, including Generic Zyrtec
Discuss important health-related issues with the physician, such as –
Allergic to Cetirizine or any other therapeutic drugs
Past/present medical history – asthma, liver or kidney troubles, nervous system disorders, etc.
Undergoing treatment (if any) – sleeping pills, muscle relaxants, pain killers, medicines that act on central nervous system, etc.
Pregnancy or breast feeding – The FDA has documented Cetirizine under pregnancy category B; it is not expected to harm the fetus; however, it can pass through breast milk and may prove fatal to the newborn
The physician is the right person to explain you the exact duration of course of therapy, because it usually depends on the susceptibility of the person and severity of the allergy. The treatment duration of Generic Zyrtec ranges from one week to six months after considering the intensity and frequency of the allergic reaction.
Probable Side Effects
Oliguria (scanty urine)
These are few expected side effects of Zyrtec that may or may not occur during the treatment. If any of them persist, immediately seek a medical help.
Medicines that have the action on nervous system, such as antidepressants, anti-anxiety, anti-convulsion, sedatives, pain killers, etc. can produce excessive sleepiness if taken in combination with Cetirizine. No significant medicinal interactions are found with multivitamins, herbal products, broncho-dilators (theophylline), antibiotics (azithromycin, erythromycin, etc.). However, it is recommended to have a word with the physician before starting the treatment with Zyrtec.
Generic Zyrtec is often contraindicated in people suffering from severe medical complications, like –