Unlike a previous reviewer I strongly believe in the Solgar brand, including this product.
Before purchasing I did a lot of research about Magnesium and found that the 'chelated' type is the most easily absorbed by the body, so it seemed pointless to me to buy any other type.
I have IBS-D so I started with this product slowly, taking only one tablet after my evening meal every 3 days. Within a month I had upped the dose to one after my evening meal every day - this seems to be right for me, i.e. it causes no adverse stomach issues.
For me it's working - my cramping leg muscles have now ceased, plus I'm sleeping deeper and longer (these are my two main reasons for taking this). Personally I think this product is great!
Just a note of warning though, these oblong tablets are quite large - so far I've not had any problems swallowing them and I'm usually rubbish with even small tablets. Perhaps it's because these have a smooth rather than chalky surface, though I still wish they were a litte smaller as I still find the size a little off-putting!