Description: Plants that grow in the Amazon Basin in Brazil.
Part Used: Seed
increase blood pressure
Contains 2.5-7% caffeine, (compared to 1-2% in coffee) Acts as a CNS stimulant, which increases HR, and
inhibits platelet aggregation, stimulates gastric acid secretion, causes
diuresis and relaxes bronchial smooth muscle.
200-800mg guarana extract (1:4) before breakfast/lunch,
not to exceed 3 gms. daily.
Precautions/Adverse Effects: Can produce nausea,
insomnia, tachycardia and arrhythmias
Interactions with other herbs: Those herbs that contain caffeine
(ephedra/ma huang) and black or green tea.
Interactions with other drugs:
All CNS stimulants, including
decongestants, methylphenidate, dextroamphetamine, beta2 agonists.
Oral contraceptives, MAOI's, diabetes therapy, CNS depressants, and
Interactions with food: Grapefruit juice increases levels.
Do use with gastric disease,
ulcers, cardiac disease depression anxiety, pregnancy/lactating and children.
Likely safe when used in the
amounts typically found in foods.
Guarana has been approved by the US in amounts that
are found in foods.
Abrupt discontinuation can
result in physical withdraw symptoms.
Can produce a tolerance and
Can produce prolong bleeding