# Prescription medicines and drugs sent for scientific or medical purposes – toxic, flammable or toxic and flammable · Royal Mail / Post Office — Mailing and air-carriage restrictions by item category

For Prescription medicines and drugs sent for scientific or medical purposes – toxic, flammable or toxic and flammable · Royal Mail / Post Office, item category is Prescription medicines and drugs sent for scientific or medical purposes – toxic, flammable or toxic and flammable; carrier is Royal Mail / Post Office; restriction type is restricted; scope is UK only (international mail prohibited); conditions is Inner packaging can be blister packs of tablets or capsules of liquid (each pack not to exceed 50ml/50g per tablet/capsule), or small bottles of liquid up to 50ml Net quantity in any parcel not to exceed 500ml/500g Medicines must be securely closed and placed in a sealed polythene bag (for liquids) or a sift-proof container (for solids) Must be tightly packed in strong outer packaging and cushioned to prevent breakage Sender's name and address must be visible on the parcel, recorded from its source on 2026-08-30.

- **Item category:** Prescription medicines and drugs sent for scientific or medical purposes – toxic, flammable or toxic and flammable _(verified: appears in the quote below)_
- **Carrier:** Royal Mail / Post Office _(our reading, not quoted from the source)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** UK only (international mail prohibited) _(our reading, not quoted from the source)_
- **Conditions:** Inner packaging can be blister packs of tablets or capsules of liquid (each pack not to exceed 50ml/50g per tablet/capsule), or small bottles of liquid up to 50ml Net quantity in any parcel not to exceed 500ml/500g Medicines must be securely closed and placed in a sealed polythene bag (for liquids) or a sift-proof container (for solids) Must be tightly packed in strong outer packaging and cushioned to prevent breakage Sender's name and address must be visible on the parcel _(verified: appears in the quote below)_

## What the source says

> Prescription medicines and drugs sent for scientific or medical purposes – toxic, flammable or toxic and flammable International – not allowed in the mail UK – allowed in the mail, see restrictions and packaging guidelines below: Inner packaging can be blister packs of tablets or capsules of liquid (each pack not to exceed 50ml/50g per tablet/capsule), or small bottles of liquid up to 50ml Net quantity in any parcel not to exceed 500ml/500g Medicines must be securely closed and placed in a sealed polythene bag (for liquids) or a sift-proof container (for solids) Must be tightly packed in strong outer packaging and cushioned to prevent breakage Sender's name and address must be visible on the parcel

## Source

- https://www.postoffice.co.uk/mail/what-can-i-send

Last verified: 2026-08-30. Review by: 2027-08-30.
Part of [Mailing and air-carriage restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).