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How do I take cyclophosphamide and how long does it take to work?

Cyclophosphamide can be taken:

  • either through a drip into a vein (intravenous infusion) which will need to be given in hospital
  • or as low doses of tablets (usually taken once a day) – these should be swallowed whole, not chewed, and should be taken with or after food and with plenty of water. 

Your doctor will discuss the options with you. The dose will depend on your body weight and may change depending on how you respond to the drug.

How long does cyclophosphamide take to work?

Cyclophosphamide doesn't work straight away. It may take six weeks or more to produce an effect, depending on your condition. It's important to attend for your planned infusions or take the tablets as directed (unless you have severe side-effects):

  • even if it doesn't seem to be working at first
  • even when your symptoms improve (to help keep your condition under control).
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