I am sure that the tablets that you have been prescribed for cramp are the right thing BUT if they don't do the job ask if taking Coenzime Q10 would harm you in any way.
They were suggested to me by my cardiologist when I started having cramp because of taking betablockers.
When Stephen (mm husband) started getting cramp we asked if he could take Q10 His specialist poo, pooed it a bit but said we could try if we wanted. It really does help.
Gill
PS I used to buy them from Holland and Barett until Min put me onto Healthspan. Much cheaper thanks Min