Melphalan Medications

Melphalan Info

What is Melphalan?

Melphalan is a chemotherapy drug that belongs to the group of alkylating agents. It works by interfering with the DNA inside cancer cells, which helps to slow or stop the growth of those cells. In the UK, melphalan is used as the active ingredient in several prescription medicines, most notably Alkacel.

Medicines that contain Melphalan

The best-known product that carries melphalan in the United Kingdom is Alkacel. This medication is available in oral capsule form and in injectable solutions for hospital use. Some pharmacies may also dispense the drug as a generic melphalan preparation, which is chemically identical but may be marketed under a different label. All formulations contain the same active ingredient, but the strength of each capsule or vial can vary, and some products combine melphalan with other supportive medicines. Availability is generally restricted to specialist cancer centres and hospitals, where oncologists decide the most appropriate preparation for each patient.

What does Melphalan treat?

Melphalan is primarily used to treat several types of cancer. The main conditions include:

• Multiple myeloma - a cancer of the plasma cells in the bone marrow. Melphalan helps control tumour growth and can be part of a larger treatment plan.
• Ovarian cancer - especially when the disease has returned after initial therapy. It may be given alone or together with other drugs.
• Melanoma - a skin cancer that has spread to other parts of the body. Melphalan can be used in specific high-dose regimens.
• Acute leukaemia - a fast-growing blood cancer. In some protocols, melphalan is part of the induction therapy.
• Other solid tumours - including certain cancers of the lung, breast, and gastrointestinal tract, where a specialist may consider melphalan as part of a combination approach.

These uses are based on approval from the Medicines and Healthcare products Regulatory Agency (MHRA) and clinical guidelines. While melphalan is sometimes discussed for other, less common conditions, any off-label use would be decided by a qualified oncologist.

How Melphalan works

Melphalan belongs to the alkylating-agent family. After it enters the bloodstream, it attaches to the DNA in rapidly dividing cells, such as cancer cells. This attachment creates breaks in the DNA strands, which makes it difficult for the cells to multiply. Because normal cells divide more slowly, they are less affected, although some side effects can still appear. The drug starts to act soon after it is given, but the full impact on tumour size may be seen over several weeks.

Safety information

Common side effects

Most people who receive melphalan notice mild, short-lasting reactions, such as:

• Nausea or loss of appetite
• Temporary hair thinning or loss
• Fatigue or feeling unusually tired
• Low-grade fever
• Mild skin irritation at the injection site (if given intravenously)

These effects usually lessen after treatment ends or with supportive care prescribed by the oncology team.

Serious reactions

Although rare, some reactions need urgent medical attention:

• Severe allergic signs, like swelling of the face, lips, or throat, and difficulty breathing
• Persistent high fever, chills, or signs of infection
• Unexplained bleeding or bruising, which can indicate low blood cell counts
• Sudden, severe stomach pain or persistent vomiting

If any of these occur, seek immediate medical help.

Who should be cautious

Melphalan may not be suitable for everyone. Extra care is required for people who:

• Are pregnant or may become pregnant (the drug can affect the developing baby)
• Have significant kidney or liver problems, as the body may not clear the medicine properly
• Have a known allergy to melphalan or other alkylating agents
• Have a history of severe heart disease, because high-dose regimens can stress the heart

Interaction awareness

Melphalan can interact with several other substances:

• Other chemotherapy drugs may increase the risk of blood-cell suppression
• Certain antibiotics and antivirals can affect how melphalan is processed
• Alcohol may worsen nausea and liver strain
• Some foods rich in vitamin C can theoretically reduce the drug’s effectiveness, though the impact is modest

Patients should discuss all medicines, vitamins, and supplements they are taking with the treating team. Detailed interaction lists are available on each specific medication’s information page.

Things to remember before using

Store melphalan capsules in a cool, dry place, away from direct sunlight. Injectable forms should be kept according to the hospital pharmacy’s guidelines, usually refrigerated and protected from light. Treatment courses can be short (a few weeks) or longer, depending on the cancer type and regimen chosen. Because formulations differ, always follow the instructions that accompany the particular product you receive. For detailed usage, dosing, and administration, refer to your specific medication’s information.

Key terms

Alkylating agent: A type of chemotherapy that attaches a small chemical group to DNA, disrupting cell growth.

Myelosuppression: A decrease in the bone-marrow’s ability to produce blood cells, often seen with chemotherapy.

Neutropenia: A low count of neutrophils, a white-blood-cell type that fights infection.

Pharmacokinetics: How a drug moves into, through, and out of the body.

Information disclaimer

This article offers general educational information about melphalan as an active substance used in various medicines. Its purpose is to help patients better understand the ingredient and the conditions it is used to treat. It is not a substitute for professional medical advice or for the specific instructions provided with individual products. Medicines containing melphalan may differ in formulation, strength, and directions for use. Always consult the labeling of your particular medication and follow your healthcare provider’s guidance for complete information on proper use, dosage, and safety.