hyoscine (scopolamine)
An alkaloid, C17H21NO4, from plants such as henbane; used as a mydriatic
(dilatate the pupils) and sedative, and to treat nausea and motion
sickness.

hyoscyamus
Poisonous Eurasian herbs of the family Solanaceae that have simple
leaves, irregular flowers, and include the henbane (H. niger). Dried
leaves of the henbane containing the alkaloids hyoscyamine and
scopolamine, used as an antispasmodic and sedative.

ichthyol
Oily substance prepared by the dry distillation of a bituminous mineral
containing fossil fishes. Used as a remedy for some skin diseases.

ignatia
Dried ripe seeds of the Saint-Ignatius's-bean used like nux vomica.

impetigo
Contagious bacterial skin infection, usually of children, indicated by
the eruption of superficial pustules with thick yellow crusts, commonly
on the face.

incommode
Cause inconvenience; disturb.

inspissate
Undergo thickening or cause to thicken, as by boiling or evaporation;
condense.