What are the 4 key drugs?

The Four Key Drugs in Palliative Care

When it comes to end-of-life care, comfort and dignity are paramount. To help manage common and often distressing symptoms, healthcare professionals often rely on what’s known as the "four key drugs." These medications are typically administered via subcutaneous injection, allowing for steady, effective relief when oral intake is no longer feasible.

An opioid forms the cornerstone of this regimen—most commonly morphine. It’s used to control persistent pain and can also help ease breathlessness, a common and frightening symptom for patients nearing the end of life.

The second component is an antiemetic, such as haloperidol or ondansetron. Nausea and vomiting can arise from a variety of causes—medication side effects, disease progression, or gastrointestinal obstruction—so having an antiemetic on board helps maintain comfort.

Next is an antisecretory drug, like glycopyrronium or hyoscine hydrobromide. These help reduce the build-up of respiratory secretions, which can cause a distressing "death rattle." By minimizing these secretions, the patient remains more peaceful, and caregivers feel less distressed.

Finally, a sedative such as midazolam is included to manage anxiety or terminal restlessness. When administered appropriately, it provides gentle calming without hastening death, preserving both comfort and natural progression.

While not every patient will need all four drugs at once, having them ready allows for rapid response to changing symptoms. The goal isn’t to prolong or shorten life, but to ensure the final hours are as free from suffering as possible. In palliative care, this thoughtful combination reflects a deep commitment to compassion, dignity, and humane support when it matters most.