Below are the main rubriks (i.e strongest indications or symptoms) of Natrum Phosphoricum in traditional homeopathic usage, not approved by the FDA.
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Lassitude in morning; in hot weather.
Drowsy all day, most forenoon; falls asleep sitting.
Unusual excitement, could not sleep till 1, awoke again at 5, unrested.
Sleepless 12 to 3 a.m.
Dreams sexual; vexing; of the dead.
Wakes at midnight; soon a sensation like electric shock through body; trembling and palpitation as from fright.
Deposits in joints (S).≡ more ...