What are the side effects of drinking electrolytes empty stomach in the mornings?

Electrolytes on an empty stomach may help ease fasting-related lightheadedness or shakiness for some people, while others notice no need for them.

1. Sodium, potassium, or magnesium: Huberman discusses adding salt to water to help offset lightheadedness and shakiness during a fast; the discussion also notes sodium, potassium, and magnesium as electrolytes involved in nerve signaling. 1
2. Effects vary: David Sinclair said he had no shakes while fasting and did not feel a need to take electrolytes. 2

These remarks describe possible effects during fasting, not a guarantee that everyone will benefit.