Schering-Plough | Alavert (Medication)


Alavert/loratadine is a long-acting antihistamine that is used for the treatment of allergy. Histamine is a chemical that causes many signs and symptoms of allergy. Histamine is released from histamine-storing cells (mast cells) and attaches to other cells that have receptors for histamine on their surfaces. Histamine stimulates the cells to release chemicals that produce effects that we associate with allergy.

Alavert/loratadine blocks one type of histamine receptor (the H1 receptor) and thus prevents activation of cells with H1 receptors by histamine. Unlike some antihistamines, it does not enter the brain from the blood and, therefore, does not cause drowsiness when taken at recommended doses. ...

Side Effect:

Tell your doctor at once if you have a serious side effect such as:fast or uneven heart rate; feeling like you might pass out; jaundice (yellowing of your skin or eyes); or seizures (convulsions).

Less serious side effects may include:headache; nervousness; feeling tired or drowsy; stomach pain, diarrhea; dry mouth, sore throat hoarseness; eye redness, blurred vision; nosebleed; or skin rash.

Seek immediate medical help if you have any of these signs of an allergic reaction:hives; difficult breathing; swelling of your face, lips, tongue, or throat. ...


Prior to taking Alavert, tell your doctor or pharmacist if you are allergic to loratadine or if you have any other allergies. Do not self-treat with this medication without consulting your doctor first if you have certain medical conditions such as:kidney disease, liver disease.

Alavert does not usually cause drowsiness when used at recommended doses. However, do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely.

If you have hives and your doctor has prescribed Alavert, or if you are considering using this drug to treat your own hives, tell your doctor immediately if you have any of these other symptoms because they may be signs of a more serious condition:hives that are an unusual color, hives that look bruised or blistered, hives that do not itch. The chewable tablets may contain aspartame. If you have phenylketonuria (PKU) or any other condition that requires you to restrict your intake of aspartame (or phenylalanine), consult your doctor or pharmacist about using this drug safely.

During pregnancy and breastfeeding is not recommended to use this medicine without your doctor's advice. ...