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Side Effects

All medicines – pharmaceutical, homeopathic or herbal – whether prescribed or purchased from a chemist or health food store, havethe potential to cause side effects. Medicines (and alcohol) are absorbed directly into the blood stream from the stomach. As VLCD programmes are very low in calories, so the effect of some medicines may be made stronger. The likelihood of side effects occurring is also increased. This is why itis essential for the Consultant to establish whether the client is taking any medication and also why it is necessary to inform the GP. Please also refer to the Allergens Advisory Note if your client tells you that they have a food intolerance/allergy or a specific food choice. 

Sometimes, a client may display symptoms on undertaking a Cambridge Weight Plan Step that may be a side effect of weight loss. These side effects are most common when following a VLCD but may also occur on the higher Steps. It is important to bear in mind that some symptoms may be unrelated to following our Programme and could indicate an underlying medical condition. If symptoms persist or they are severe, refer your client to their GP immediately and notify a Medical advisor at Head Office.

Please see the following Advisory Notes for your reference.


  • Bad breath

  • Breakthrough bleeding

  • Constipation

  • Cramps

  • Diarrhoea

  • Dizziness

  • Gallstones

  • Hair loss

  • Headache

  • Menstrual cycle changes

  • Nausea

  • Rash

  • Skin folds 

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