It depends. Over-the-Counter drugs can be bought both in Pharmacies or Parapharmacies. A certified pharmacist is always there to give you advice.
Prescription drugs are sold in Pharmacies, but you'll need a doctor's prescription. In every district of the city, there is a least one pharmacy that does the night shift, and there are a few pharmacies that are open 24 hours (e.g. near Loreto, Cadorna, De Angeli e and Zara metro stations).
Class-A life-saving drugs are covered by the National Health Service except a small upfront contribution called 'ticket'.
You will need:
your Tessera Sanitaria, with Codice Fiscale.
your Ricetta Medica (prescription sheet or e-prescription code number)
By presenting your Codice Fiscale while paying for your medicines, you will be registered electronically and accounted for a deduction in your tax income statement - if applicable.
(For locations and opening hours of pharmacies, call infoline 800.801.185)
For all health issues call your general practictioner/family doctor, or the paediatrician assigned to your child.
When your family doctor is off (e.g. non-working days, and at nights) and you have a non-delayable necessity, a Continuity Service is ensured: call 116117