Vets sometimes choose Claritin because it won’t cause drowsiness and lasts longer than some other kinds of antihistamines.
Claritin doesn’t cross the blood-brain barrier, so it’s unlikely to make you drowsy, she says. It also takes a bit longer to ...
loratadine (Claritin) These newer antihistamines are less likely to cause drowsiness and dizziness. Research has found them less likely to cause dangerous effects if a person takes too much.
The catch is that they take 30 minutes to an hour to kick in, and they can leave you feeling drowsy or light-headed. Newer, nonsedating OTC antihistamines such as loratadine (Claritin) and ...
On non-drowsy formulas, look for stimulants such as the decongestant pseudoephedrine (like Claritin D, above) and caffeine, which could keep you awake at night. What it means: "PM" formulas ...
Allegra is the least likely to make you drowsy. Claritin is long-acting, with effects that last for 24 hours. Zyrtec acts the fastest - usually within one hour - but is also the most likely to ...