You should only take the recommended dose. If you accidentally take more than the recommended dose, there shouldn't be a toxicity concern, but vitamin overdose can occur when taking more than recommended amounts of multivitamin supplements. We'd suggest checking in with your health care provider in this event. This is for information only and not for use in the treatment or management of an actual poison exposure. If you have an exposure, you should call your local emergency number (such as 911) or the National Poison Control Center at 1-800-222-1222.