"have been on lithium for years. have to be careful of the heat, hot baths or working up a sweat, as the heat effects lithium in your body. i&rsquo;m on lithium sr it&rsquo;s kinder than lithicarb. i had no side effects on the extended release. on the lithium i drank litres of water, felt sick to my stomach for days but extended release there was almost no side effects. its lithium but sustained release, not so hard."