Clarinex Before taking Clarinex, tell your doctor if you have ever had an allergic reaction to an antihistamine; kidney disease; or liver disease. You may not be able to take Clarinex, or you may require a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above. Clarinex is in the FDA pregnancy category C. This means that it is not known whether Clarinex will be harmful to an unborn baby. Do not take Clarinex without first talking to your doctor if you are pregnant or could become pregnant during treatment. Clarinex passes into breast milk and may affect a nursing infant. Do not take Clarinex without first talking to your doctor if you are breast-feeding a baby.
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Claritin-D Before taking Claritin-D, tell your doctor if you have asthma or another lung disease; diabetes; thyroid problems; glaucoma or increased pressure in the eye; urinary retention or an enlarged prostate; narrowing of the esophagus or gastrointestinal tract or difficulty swallowing; kidney or liver disease; or heart disease, high blood pressure, or an irregular heartbeat. You may not be able to take Claritin-D, or you may require a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above. Claritin-D is in the FDA pregnancy category B. This means that it is not expected to be harmful to an unborn baby. Do not take Claritin-D without first talking to your doctor if you are pregnant. Claritin-D passes into breast milk and may affect a nursing baby. Do not take Claritin-D without first talking to your doctor if you are breast-feeding a baby. Claritin-D has not been approved for use by children younger than 12 years of age.