What's in claritin d?

Claritin‑D is a combination over‑the‑counter medication that treats seasonal allergy symptoms and nasal congestion.
It’s marketed under several brand names (e.g., Claritin‑D, Allegra D, Clarity). The key active ingredients are:

Other common ingredients (inactive/excipients)

The exact mix can vary slightly by manufacturer, but most tablets contain one or more of these:

• Lactose monohydrate (or an alternative carbohydrate) – a filler.
• Microcrystalline cellulose – a tablet binder.
• Magnesium stearate – a lubricant.
• Stearic acid – a glidant.
• Titanium dioxide or iron oxides – coloring agents.
• Sodium lauryl sulfate – used in some formulations.
• Croscarmellose sodium – a disintegrant (helps the tablet break apart in the stomach).

Quick safety notes

• Pseudoephedrine is a regulated ingredient; in many countries you may need to provide identification or purchase from a pharmacist’s counter.
• It can raise blood pressure, heart rate, and cause insomnia or nervousness. Avoid if you have uncontrolled hypertension, severe heart disease, or are taking MAO inhibitors.
• Loratadine is generally well‑tolerated but can cause drowsiness in a minority of people.
• Pregnancy and breastfeeding: consult your provider; while loratadine is considered low‑risk, the safety of pseudoephedrine in late pregnancy is less clear.

Typical dosing

Never exceed the recommended dose, especially because pseudoephedrine can accumulate quickly and lead to serious cardiovascular side effects.

Bottom line

Claritin‑D is loratadine + pseudoephedrine. It combines an antihistamine with a decongestant so you can tackle both the “runny‑nose” and “stuffed‑nose” symptoms of allergies. Keep the product out of reach of young children, follow the label instructions, and check with a healthcare professional if you have underlying health conditions or are taking other medications.