Magnesium?

I have decided, after not getting any definite advice from Drs., Pharmasists, Health Practitioners,etc. to plump for Magnesium suppiement. Please can someone tell me what type to take and what strength, I take Beta-blockers and Ramipril, but have been told that Mag. can have an effect on the heart, any advise please?

 

There's a good book about magnesium.  I'll private message you details.

Anhaga, thank you, much appreciated.

I doubt it in the sort of doses you'll get from the chemist! They sell it in the supermarkets here - in a country where you can't buy paracetamol except from the pharmacy! I take betablockers and an angiotension II inhibitor, magnesium isn't a problem. 

Sorry for the late reply - just got the notification!

Holland and Barrett sell  a natural sea sourced capsule...I find that one a day stop me from getting cramp at night, so they must be strong enough to have an effect.