If you miss a dose, contact your doctor or pharmacist right away to establish a new dosing schedule.
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: signs of kidney problems (such as change in the amount of urine).