How old do you have to be to buy Claritin -d cl?

To purchase Claritin-D (which contains pseudoephedrine), you must be at least 18 years old in the United States. This age restriction is due to regulations aimed at controlling the sale of pseudoephedrine, which can be used to manufacture methamphetamine. Additionally, you will need to show a valid photo ID when buying Claritin-D.