Adults (18 years and older):
200 milligrams of extract GS4 taken by mouth twice daily or 2 milliliters of an aqueous decoction (10 grams of shade-dried powdered leaves per 100 milliliters) three times daily have been studied.
The manufacturer PharmaTerra recommends the dose for their product ProBeta® (GS4) to be two 250 milligram capsules taken twice daily at mealtimes (for adults weighing more than 100 pounds) or one 250 milligram capsule taken twice daily at mealtimes (for adults weighing less than 100 pounds).
You should read product labels, and discuss all therapies with a qualified healthcare provider. Natural Standard information does not constitute medical advice, diagnosis, or treatment.