The difference between hyoscine and atropine is that hyoscine:
ATROPINE HYOSCINE CNS EFFECT : AT LOW DOSE : EXCITATION(MILD) DEPRESSANT AT HIGHT DOSE : EXCITATION AND HALLUCINATION EXCITATION AND HALLUCINATION DURATION LONGER SHOER ANTICHOLINERGIC PROPEY MORE POTENT ON HEA, BRONCHIAL MUSCLES AND INTESTINE MORE POTENT ON EYE AND SECRETORY GLANDS
Exes depressant effects on the CNS at relatively low doses
Exes more potent effects on the hea than on the eye
Is longer acting
Has weaker antimotion sickness activity
Parasympathetic System & Glaucoma