Can zyrtec or Claritin (loratadine) cause a child to have diarrhea?

It's very unlikely. It's very unlikely for these antihistamines to cause diarrhea, so look for other possible explanations. If the diarrhea is transient, there's a good probability that it could be viral.
Not likely. Almost any medicine can cause almost any side effect, but as dr. Sanico said, it would be extremely unlikely for zyrtec or Claritin (loratadine) to cause diarrhea.

Related Questions

Which is better for allergies zyrtec or claritin (loratadine)?

Zyrtec vs claritin (loratadine) Claritin is the most ineffective antihistamine ever approved for market. Its effect is weak and can take a long time to work. But many patients prefer it to zyrtec because it is less sedating (8% vs 13%) still, both ares safe and easy to try. The new version, Clarinex is more different from Claritin than xyzal (levocetirizine) is from zyrtec. Read more...
Zyrtec (cetirizine) Zyrtec (cetirizine) has more anti-allergy or anti-inflamatory effects than clariten (loratidine) and is often better for most allergic symptoms. It does cause drowsiness in some patients. Antihistamines work best when taken at bedtime if you are taking them on a daily basis - as in a pollen allergy or allergy to a pet that lives in your house. Read more...

Several months I suffer from chronic congestion. Neither zyrtec or claritin (loratadine) helps. What to do or take next?

Nasal steroid. Antihistamine alone does not decongest your nose although it may reduce the sneezing, runny nose, or itching. Consider a trial with nasal steroid. If still not helpful, consult an allergist. Read more...

Does taking zyrtec or Claritin (loratadine) before a methacholine challenge affect the results?

Mrthacholine test. Methacholine challenge test for asthma is not affected by zyrtec, claritin, allegra, Benadryl (diphenhydramine) or any other antihistamines. The test can be blocked or affected by bronchodilators like albuterol, xopinex, adrenaline etc. Read more...

Is it safe to take zyrtec or Claritin (loratadine) while pregnant? I'm 37 years old, 6 weeks pregnant and have seasonal allergies.

There . There is no known risk to taking zyrtec or Claritin (loratadine) in pregnancy. We generally advise to try not to take medications in the first trimester unless you really need it. If your allergies are really bad you can go ahead and keep taking it. All the best to you. Congratulations:). Read more...
Both . Both zyrtec and Claritin (loratadine) are classified by the fda (the U.S. Food and drug administration) as pregnancy category b drugs, meaning there is no known risk to pregnant women or their babies. So there is no evidence that either one is harmful. Let your OB doctor know all the drugs and supplements you are taking. Best wishes with your pregnancy and congratulations! Read more...