Boostaro carries a 180-day money-back guarantee from the date of purchase.
The guarantee runs for 180 days from purchase and covers dissatisfaction with your results or your overall experience. That window comfortably covers the 30 to 60 days nutritional support of this kind typically needs to show an effect, with considerable room to spare.
Contact the official store directly with your order number, within the 180-day window. Some guarantee programmes require unused or empty bottles to be returned; confirm what applies to your order before shipping anything back.