Pharmacy gave my prescription to a relative in error. How seriously should I take it?

Was it an actual pharmacist you talked to, or an assistant? This is a big mistake for many reasons, - you not getting your medication, - someone else getting it (doesn’t matter what it actually is, it could still be dangerous. The statin’s could interact with something they are on), - their check system for getting the right order to the right person hasn’t worked, - confidentiality and data issues because the person with your medication now has your name, address, dob and know some medication you’re on - and if it was them that told you it was your cousin that had your meds, there’s now info breach with them telling you they had it (I don’t know, your cousin might have told you) If it was the pharmacist you talked to, their response is very concerning. If a small independent chemist’s, then it’s their responsibility to ensure systems work and a mistake like this could cause them major problems. If it was an assistant that is concerning for a different reason; they seem to not understand the significance of the mistake. I’d recommend going back to the pharmacy and talk to the pharmacist/manager. Calmly explain what happened and your concerns, including that it did not seem to be taken seriously, and want to know what they are doing to make sure it doesn’t happen again