Kali phosphoricum (Kali-p)
The first tissue salt to think of for nervousness, lack of energy and exhaustion from overexertion, loss of sleep or overwork or study. Worn out nerves!
Kali phos is a tissue salt that was traditionally used as a nerve tonic. It may help provide support during times of stress, study and over work. Exhaustion, prostration, oversensitive, ‘brain fag’ from over work or study. Homesickness.