: In some states, clerks must only card you if you appear to be under 25 or 35.
: Minors may be able to purchase NyQuil in restricted states if they have a valid prescription from a doctor. how old do you have to be to buy nyquil
: Many national chains, such as Walmart and CVS Pharmacy , have internal policies requiring ID for DXM products regardless of specific state laws. State-Specific Rules : In some states, clerks must only card