Is loratadine the same as Claritin d?

They are not exactly the same. Loratadine is the active ingredient in Claritin (and its generic form), but the "D" in Claritin D refers to the decongestant, pseudoephedrine... so, Claritin D is a combination of loratadine and pseudoephedrine. It's basically like combining regular Claritin with regular Sudafed. If you have no congestion, you don't need the "D".

Always ask a doctor or pharmacist if you are unsure or need more information.