What time of day should I take Claritin®? Claritin® products are non-drowsy and can be taken at any time. Do not take more than one dose every 12 hours if you are using a 12-hour product, or one dose every 24 hours if you are using a 24-hour product. Always follow the label directions.

Warnings may apply to individuals who have asthma, kidney disease, or liver disease. People who have phenylketonuria (PKU) should avoid certain brands of orally disintegrating tablets that may contain aspartame.

Common Claritin side effects include headache, drowsiness, and fatigue. Less commonly people may experience dry mouth, dizziness, or stomach side effects like nausea or diarrhea. Contact your healthcare provider if any Claritin side effects become too bothersome.

Claritin. Claritin is a brand name for the drug loratadine, which doesn't usually raise blood pressure. Claritin-D, a combination of loratadine and pseudoephedrine, can elevate blood pressure.

Claritin tends to start working within 1 to 3 hours after taking it. The difference in time can depend on which type of product you take. Oral tablets seem to kick in faster than capsules. Claritin's full effects should be felt about 8 to 12 hours after a dose.

Antihistamines, like Claritin (loratadine) and Zyrtec (cetirizine), start working within a few hours. Nasal steroid sprays, like Flonase (fluticasone), can take up to 2 weeks to fully kick in.

In addition, do not take loratadine (Claritin) while taking erythromycin (an antibiotic), ketoconazole (an antifungal drug), cimetidine (a heartburn medicine), or clarithromycin (an antibiotic) due to potential drug interactions and an increased risk of side effects.

“Claritin is a 24-hour antihistamine that works in the same way as Zyrtec, however, research has found that Claritin may be less potent than Zyrtec and therefore less effective,” explains Dr. Parikh. Although potential side effects may also be minimized as a result, she adds.

Yes, you can take Claritin daily and long term. It is an antihistamine used to treat for allergy symptoms. If your symptoms are year round then it is able to be taken long term. If your symptoms are seasonal or you have allergy symptoms occasionally, then it is taken daily when required.

Second-generation antihistamines that are not combined with decongestants are the best choice for people with hypertension.

Examples of these are Allegra, Claritin, and Zyrtec. These will not affect your blood pressure at all. You may also see another version that advertises itself as not only good for allergies but good for relieving stuffy nose and sinus issues, too. Examples of these include Allegra-D, Claritin-D, and Zyrtec-D.