We have a family holiday booked to go and visit my sister in Hong Kong in April.the flights have been booked since last summer. Unfortunately my husband has now relapsed and has started treatment again his regime is Lenalidomide, cyclophosphamide and Dexamethasone. He would of completed 3 cycles when we are due to fly and it would be his week off Lenalidomide. My question is has any one else done a long haul flight whilst on this type of treatment.