oops sorry, disappeared into work for a bit! yes, the recommended dose is 1500mg/day, anything else is regarded as homeopathic i guess. i didnt know that about the hydrochloride being more bio-available, as the only stuff prescribable is sulphate.... i think... guess the medical world need to catch up on that one. so thanks for the recommendations, though i expect everyone in the world is down the pub now, except me! :( happy halloween!