Is there anything to take for leg cramps though.

two aspirin usually does the trick for me...

Potassium has been recommended. There are supplements out there as well as some foods like bananas. I don't say it works, but some people say it does.

Thanks for the advice. Do you know what usually causes leg cramps though. I want to know more about it.

"Though"?

Bananas are Rich in Pottassium and Flavanoids.It will definitely help in muscle cramps. When muscle cramps are there drink plenty of water too.
Pottassium supplements will also help

You can usually treat muscle cramps with self-care measures. Your doctor can show you stretching exercises that can help you reduce your chances of getting muscle cramps. Making sure you stay well-hydrated also can help. For recurrent cramps that disturb your sleep, your doctor might prescribe a medication to relax your muscles. Some suggest taking vitamin B complex supplements to help manage leg cramps. However, more research is needed to confirm this benefit.

Leg cramps are really very painful. There are some actions that may provide you relief:

Stretch your cramped leg and slowly massaging leg can help to relax.
Taking warm bath or shower onto the cramped leg can help and use heating pad on your leg to get relief. Alternatively, you can massage with ice to reduce pain.
If the cramping is severe then you can ask your doctor for muscle relaxing medications.