Scientists found that giving the drugs at between 1 and 4pm also reduced side effects by up to five times.

The team behind the study believe that the effect is due to changes in the natural rhythms of our bodies.

Scientists know that cells divide differently at different times of the day.

In cancer cells this normal division is accelerated but chemotherapy drugs target how the cells divide, slowing down the rate.

If the drugs can be given at the perfect time in the natural rhythm of the cell, doctors believe that they can be more effective.