MST Continus 200 mg is a prescription medication that contains morphine.

• MST stands for Morphine Sulfate Tablets.

• Continus means the medicine is slow-release (extended-release).

• 200 mg is the dose of morphine in each tablet.

What it is used for

MST Continus is used to treat severe or long-lasting pain, for example:

• Cancer pain

• Serious injuries

• Chronic pain that other medicines cannot control

Because it is slow-release, the tablet releases morphine gradually over about 12 hours, helping to control pain for a longer time.

How morphine works

Morphine is a strong opioid painkiller. It works by blocking pain signals in the brain and spinal cord, which reduces how strongly the body feels pain.

Important risks

Since it is a very strong opioid, MST Continus can cause:

• Drowsiness

• Constipation

• Nausea

• Slowed breathing

It can also lead to dependence or addiction if not used exactly as prescribed. Because the dose 200 mg is very high, it is usually only prescribed to people who already tolerate opioids.

Important safety note

The tablets must not be crushed or chewed, because that would release the full dose at once and could be dangerous or fatal.