Medical certificates and prescriptions are both doctor-issued documents, but they serve entirely different purposes and are addressed to different parties.
The Core Difference
A prescription is a directive from a doctor to a pharmacist, instructing them to dispense specific medications in specific doses. A medical certificate is a formal declaration about a patient's health status addressed to third parties — employers, schools, or insurance companies.
When to Use Which Document
Use a prescription when: you need to purchase medications from a pharmacist.
Use a medical certificate when: you need to justify absence from work or school, support an insurance claim, or meet any other official requirement for a formal health declaration.
Submitting only a prescription to an employer as justification for sick leave is a common mistake — most HR departments require a dedicated medical certificate.
Frequently Asked Questions
Can a prescription double as a sick leave certificate?
No. A prescription tells a pharmacist what to dispense — it does not certify unfitness for work.
Does a prescription prove I was sick?
A prescription implies you saw a doctor, but it doesn't explicitly certify illness or the need for rest. Always request a separate medical certificate.
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