Lithium orotate is a mineral supplement, not a drug. I buy mine through Amazon.com
Here's a link:
https://www.amazon.com/NCI-Advanced-...ithium+orotate

Based on my research, the most you can take a day is 40 mg, and it comes in 5 mg caplets. I normally take 20 mg every morning, and if I'm wound up or can't sleep, I take a couple more up to the 40 mg. Be sure at start with the lowest dosage and see how you do on it.