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Loratadine-D 12 Hour

Generic name: loratadine and pseudoephedrine [lor-AT-a-deen-and-SOO-doe-ee-FED-rin]
Brand names: Alavert D-12, Claritin-D 12 Hour, Claritin-D 24 Hour, Leader Allergy Relief D-24, Loratadine-D 12 Hour, Loratadine-D 24 Hour
Drug Class: Upper Respiratory Combinations

What is Loratadine-D 12 Hour?

Loratadine-12 Hour is a combination medication used to treat symptoms such as sneezing and runny nose. It also treats sinus pain and itchy, watery, or irritated eyes and noses.Loratadine-12 Hour can be used in other ways not mentioned in this guide.

Side effects of Loratadine-D 12 Hour

If you experience any of the following symptoms of an allergic reaction, seek immediate medical attention: difficulty breathing, hives, swelling of the face, lips, or throat.

Loratadine for 12 hours can cause serious side effects. If you experience:

  • If you feel your heart pounding or your chest fluttering, then it is a sign that you are experiencing a cardiac arrest.
  • Severe dizziness, nervousness, or restlessness.

Loratadine 12-hour side effects may include:

  • Dry mouth, nose, or throat
  • Mild dizziness;
  • Sleep problems (insomnia).

There may be other side effects. Call your doctor for medical advice about side effects. To report adverse effects, you can contact the FDA at 1-800-FDA-1088.


If you've taken an MAO-inhibitor in the last 14 days (such as isocarboxazid or linezolid), or if your symptoms are worsened by MAO-inhibitors, do not take this medication.

Before you take this drug

Loratadine 12 Hour should not be used if an MAO inhibitor has been taken in the last 14 days. There is a risk of a dangerous drug interaction. MAO inhibitors are isocarboxazid (linezolid), phenelzine (phenelzine injection), rasagiline (selegiline), methylene blue injection, and others.

If you are suffering from:

  • Liver or kidney disease
  • High blood pressure, heart disease
  • Diabetes;
  • Thyroid disorder;
  • An enlarged prostrate can cause urination issues.

If you are pregnant, do not take this medicine unless your doctor has prescribed it.The use of this medicine is not recommended during breastfeeding.

How to take Loratadine-D 12 Hour?

Follow the instructions on the label or those prescribed by your physician. For colds or allergies, medicines are only to be used for a short time until symptoms disappear.Follow the directions on the label of any medicine you give to a child. Never use medicine to put a child to sleep.The tablet should not be chewed, crushed or broken.If your symptoms don't improve within 7 days or you have a temperature, call your doctor.Tell your doctor or surgeon if you've taken allergy or cold medicine in the last few days if you are going to need surgery.Keep away from moisture and heat at room temperature.

What happens if I miss the dose?

Loratadine (12 hours) is taken as needed and may not have a schedule. If it is almost time to take your next dose, skip any missed doses. Never take two doses in one go.

What happens if I overdose?

Call 1-800-222-1222 for poison help or seek immediate medical attention.A severe overdose can cause drowsiness.

What should be avoided?

Loratadine for 12 hours can cause blurred vision or affect your reaction. Do not drive or engage in hazardous activities until you have determined how the medicine will affect you.Certain side effects can be exacerbated by alcohol consumption.Before using any other cold or cough medicines, check with your doctor.

Interaction with other drug

Loratadine for 12 hours can make you more drowsy. Before taking an opioid, sleeping pill, muscle relaxer, or medicine to treat anxiety or seizures, consult your doctor.Loratadine 12 Hour may be affected by other drugs, such as prescription and over-the-counter medicines, vitamins, and herbal products. Inform your doctor of all the medicines you are taking and those that you stop or start using.