Doctor insights on:
Allergies: Allegra and xyzal are two different types of antihistamines. They are called non sedating antihistamines as older antihistamines like Benadryl (diphenhydramine) cause drowsiness in some people. The entire class of medicines are used to treat allergies or allergic reactions. ...Read moreSee 1 more doctor answer
If allergic to 1 antihistamine, am i allergc to all? Have seen a few hives after benadryl, (diphenhydramine) xyzal, & now allegra. Coincidence or true allergy?
PROBABLY COINCIDENT: It is not possible to be allergic to all antihistamines and these are all different componds you listed.Benadryl, (diphenhydramine) xyzal and allegra.I will like to know what you call allergy, what are the symptoms and what kind of rash if any with these three antihistamine. It is possible but this kind of allergy will be considered rare consult your doctor who treated your allergies in first place;may beallergist. ...Read moreSee 2 more doctor answers
I'm transitioning from xyzal (levocetirizine) to allegra & my hives are returning. I seem to react to everything--my meds & enviorment. When will allegra kick in?
Reason?: We don't usually switch pills when you are doing well with it. Xyzal (levocetirizine) does have a slightly higher incidence of drowsiness compared to allegra. One would expect Allegra to take effect in about 2 hrs. If the reason for switch is due to drowsiness, then you may up the dose of Allegra to 2 to 4 x daily . If xyzal (levocetirizine) did not have side effects, then there is no reason to change to allegra. ...Read moreSee 1 more doctor answer
I was prescribed xyzal (levocetirizine) for my allergies. I took an allegra this morning. Should I start the xyzal (levocetirizine) tonight or wait until tomorrow?
What antihistamines give me 24hr protection? Allegra 180mg? Can I take Xyzal (levocetirizine) 5mg at night and Allegra 180mg morning? Topping up prove effective?
I'm on allegra 180mg in the morning, xyzal (levocetirizine) 5mg at night, plus dymista and immun shots, and i still get a lot of white mucus when I do a sinus rinse why?
Need to control chronic hives and multiple drug allergies, too. Xyzal (levocetirizine) had too many side fx. Would allegra work?
It may: Sounds like you need the help of a board certified allergist. Good luck. ...Read more
Is it OK to take 180 mg Allegra in AM and 10m Zyrtec AND Xyzal (levocetirizine) at dinner? Allergist said to take TWO Allegra, but I'm worried it's too much
Mixing antihistamine: Generally, it's best to follow one's doctor's instructions. If not wanting to take Allegra twice a day, and wanting to add a different antihistamine such as Zyrtec or Xyzal (levocetirizine), (levocetirizine) it is probably enough to take Zyrtec or Xyzal (levocetirizine) (one of them instead of both of them). Zyrtec and Xyzal (levocetirizine) are very similar. The makers of Xyzal (levocetirizine) say it is more effective than Zyrtec, but they are similar drugs. ...Read more
Xyzal (levocetirizine) causes too many side effects so i want to switch to allegra 180mgs once a day. will this protect me from allergies/hives as well as xyzal (levocetirizine)?
Yes it would: But why not run it by your doctor ...Read more