6. Anti-cholinergics, used to treat Parkinson's Disease, are found in nature as Deadly Nightshade, a plant that is so poisonous that just one leaf could kill an adult.

Belladonna has been, and is being used as a recreational drug, diuretic, sedative, antispasmodic, mydriatic. It is used very successfully to treat eye diseases, because of its effect of dilating the pupil.

Atropine, an extract of belladonna is what an eye doctor uses when they put liquid in your eye before testing you for glasses. Atropine has also been used as an antidote to opium, calabar bean, and chloroform poisoning.

It has no action on the voluntary muscles, but the nerve endings in involuntary muscles are paralyzed by large doses, the paralysis finally affecting the central nervous system, causing excitement and delirium.

The various preparations of belladonna have many uses. Locally applied, it lessens irritability and pain, and is used as a lotion, plaster or liniment in cases of neuralgia, gout, rheumatism and sciatica.

As a drug, it specially affects the brain and the bladder. In chronic albuminuria, it stimulates the kidneys to healthy action.

Belladonna is one of the most important remedies for bladder and kidney diseases. It stimulates and at the same time relieves irritation of the urinary tract. Both the solid and watery constituents of the urine are increased in amount.

It is the remedy in urinal incontinence in small children when the fault depends upon a poor pelvic circulation or chronic irritability of the bladder. It seems best adapted to that dribbling of urine in the young children.

There has been a marked benefit from minute doses of belladonna in children who urinate every twenty minutes or half hour.

It increases the rate of the heart by some 15 to 45 beats per minute, without lessening its force. This action on body circulation helps those that collapse from pneumonia, typhoid fever and other acute diseases.

Belladonna given in very small doses will protect from the infection of Scarlet fever. It helps ease the pain of a very bad sore throat, and relieves local inflammation and congestion.