What does “Yellow Card scheme” mean?

The MHRA system for reporting suspected side effects of medicines, open to patients as well as clinicians.

Yellow Card scheme in plain English

The MHRA system for reporting suspected side effects of medicines, open to patients as well as clinicians.

Reports can be made directly without going through a clinic, and certainty that the medicine caused the problem is not required.

For unlicensed medicines, where formal trial data is limited, patient reporting carries unusual weight — it is one of the few systematic sources of safety information in this field.

Frequently asked questions

What does yellow card scheme mean?

The MHRA system for reporting suspected side effects of medicines, open to patients as well as clinicians.

Sources and further reading

Every factual statement on this page is drawn from the following public sources. Links open in a new tab and are not affiliated with Flora House.

  1. NICE guideline NG144: Cannabis-based medicinal products
  2. NHS: Medical cannabis (and cannabis oils)
  3. MHRA: The supply, manufacture, importation and distribution of unlicensed cannabis-based products for medicinal use

Patient guide · Written by the Flora House editorial team · Last reviewed: 8 September 2026