This formula's own materials frame the 60-day guarantee as a low-risk way to test your response — worth understanding exactly why that window was chosen.
Probiotic effects typically take 4 to 8 weeks to become noticeable, per this formula's own materials — the 60-day guarantee gives you real time to evaluate whether it works for you personally within that realistic timeframe.
Contact customer support directly within the 60-day window from your purchase date, referencing your order number, rather than assuming a refund happens automatically without reaching out.