Bohol.Gov.Ph Community Board - InformationDesigned by Vjacheslav Trushkin for Free Forums/DivisionCore. Lithium carbonate patient advice including side effects A B C D E F G H I J K L M N O P Q R S T U V W X Y Z If the Eskalith dosage is too low, you will derive no benefit; if it is too high, you could suffer lithium poisoning. You and your doctor will need to work together to find the correct dosage. Initially, this means frequent blood tests to find out how much of the drug is actually circulating in your bloodstream. As long as you take Eskalith, you will need to watch for side effects. Signs of lithium poisoning include vomiting, unsteady walking, diarrhea, drowsiness, tremor, and weakness. Stop taking the drug and call your doctor if you have any of these symptoms.