Nutritional Value of Guyabano
Guyabano fruit is high in carbohydrates, particularly fructose. The fruit also contains significant amounts of vitamin C, vitamin B1, and vitamin B2.

Uses of concoction prepared from pulverized guyabano seeds
As skin astringent
Treat muscle spasms
Treat dysentery
To purge parasites such as bedbugs and headlice
Uses of concoction prepared from guyabano leaves
As sudorific or to cause one to sweat
As an agent to cause vomiting (emetic)
As tranquilizer and sedative
To treat head lice and bedbugs and other parasites
To treat inflammation
Treatment for eczema and skin diseases
Treatment of catarrh or inflammation of mucous membrane in the respiratory tract.
Treatment of pain and inflammation associated with arthritis, rheumatism
Uses of guyabano fruit / Juice from guyabano fruit
Used as diuretic,
Treatment of hematuria and urethritis
Treat Dysentery
Treat Scurvy
Uses of concoction of bark, roots and leaves
To treat diabetes
As tranquilizer and sedative

Guyabano Cautions And Side Effects
Concoctions of leaves, seeds and barks are not recommended for internal consumption to young children, pregnant and lactating women

Guyabano bark has been reported to contain alkaloids called anonaine and anoniine that is high in hydrocyanic acid. Small traces of hydrocyanic acid may also be found in leaves. Hydrocyanic acid is a colorless substance that is considered poisonous.

In studies done from a Caribbean laboratory, Guyabano contains annonacin that is suggested to have a connection in the development of atypical Parkinson’s disease. Guyabano is not recommended for people who have motor control ldifficulty or suspected of having Parkinson's disease.