Xyzal is a prescription strength allergy medicine that relieves symptoms of indoor and outdoor allergies, including sneezing; itchy, watery eyes; runny nose; itchy nose and throat. Xyzal starts working in one hour so you start feeling better faster.

Since both medications have a common core chemical structure, Zyrtec and Xyzal generally have the same level of effectiveness, onset of action, and range of allergy symptoms treated. Xyzal is slightly less drowsy, so if drowsiness is an issue with your allergy medicine, Xyzal is better than Zyrtec.

Drowsiness, tiredness, and dry mouth may occur. Fever or cough may also occur, especially in children. If any of these effects last or get worse, tell your doctor or pharmacist promptly.

Greg Panico, a spokesman for Janssen Pharmaceutica, which is owned by Johnson and Johnson, said that the withdrawal was a voluntary business decision. “The decision to voluntarily discontinue it recognises that the allergy marketplace is crowded with a number of other drugs,” Mr Panico said.

Designed to be taken in the evening, so it starts working during the night and into the next day when pollen levels are at their highest. Get a good night's rest for a more productive next day, Xyzal® relieves allergy symptoms such as sneezing, itchy eyes, watery eyes, runny nose, itchy nose, and itchy throat.

Greg Panico, a spokesman for Janssen Pharmaceutica, which is owned by Johnson and Johnson, said that the withdrawal was a voluntary business decision. “The decision to voluntarily discontinue it recognises that the allergy marketplace is crowded with a number of other drugs,” Mr Panico said.

Is Xyzal® safe to use every day? Yes. Xyzal® is safe to use every day in the evening. Use only as directed and please read the product label for complete dosing instructions and warnings.

However, elderly patients are more likely to have age-related liver, kidney, or heart problems, which may require caution and an adjustment in the dose for patients receiving levocetirizine.

What Drugs, Substances, or Supplements Interact with Xyzal? Xyzal may interact with alcohol, other medicines that can make you drowsy (cold or allergy medicine, sedatives, narcotics, sleeping pills, muscle relaxers, medicine for seizures, depression or anxiety), ritonavir, or theophylline.

Is Xyzal® safe to use every day? Yes. Xyzal® is safe to use every day in the evening. Use only as directed and please read the product label for complete dosing instructions and warnings.

If necessary, the AAAAI recommends second- or third-generation antihistamines like cetirizine (Zyrtec), fexofenadine (Allegra), or loratadine (Claritin). But before dispensing any of these medications, check with a doctor or pharmacist to rule out any interactions with your loved one's medications.

The side effects - possible anxiety, confusion, drowsiness, urine retention, dry mouth and eyes, and dizziness - make these drugs inappropriate for seniors.