Having someone else pick up (IE buy) your prescription is legal and commonplace for obvious reasons. https://legalclarity.org/can-someone-else-pick-up-my-prescri...

Thus I’m regularly allowed to buy drugs I’m not legally allowed to use. “Using a prescription medication that was not prescribed to you is illegal under both federal and state laws.” https://legalclarity.org/is-it-illegal-to-use-someone-elses-...