It depends on the institution. Many universities specify what evidence they accept for special consideration, and some require a registered medical practitioner. Check your university's policy; if in doubt, a doctor's certificate is the safer option.

Usually, for short absences: it is generally regarded as reasonable evidence under the Fair Work Act. However, some awards, enterprise agreements and workplace policies specifically require a certificate from a registered medical practitioner. If you are unsure, check your policy or ask HR before relying on a pharmacy certificate.

Many larger pharmacies and chains offer pharmacist Absence from Work Certificates, but it varies store by store, and not every pharmacist offers the service on every shift. Call ahead before travelling, especially if you are unwell.