Below are the main rubriks (i.e strongest indications or symptoms) of Hyoscyamus Niger in traditional homeopathic usage, not approved by the FDA.
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Has no will to urinate ( Causticum Caust.)
During menses, convulsive movements, urinary flux and sweat
Lascivious; exposes his person; plays with genitals during fever.
Excited sexual desire
Spasms of pregnant women
Female; Before menses, hysterical spasms≡ more ...