Up to 2mg of #lithium chloride a day is in line with nutritional intake.
You're thinking lithium megadoses, which is used in a clinical setting to treat psychosis.
You can have a lithium deficiency just like you can have a sodium deficiency.
Discussion
Yes, I think small doses are good ro experiment with if you feel you need it
Still may be wise to start with upping salt intake though
Having more sodium will help your kidneys retain the lithium you get from other sources
Carbohydrates important for hydration. Insulin signaling at the level of the kidneys is vital for retaining minerals.