This site features three specifically named customer quotes — Gregory M., Walter S., and Diane K. — worth reading each one on its own terms, hedges and all.
Gregory describes being skeptical at first, and two months in, not dreading the stairs the way he used to; Walter describes nothing life-changing overnight, but his feet feeling less "off" by the end of the day after a few weeks; Diane describes buying it for her husband, who complained about his legs at night and is still taking it three months later.
None of these three accounts claims a dramatic transformation — each includes a qualifier ("skeptical," "nothing life-changing," "says something") — worth reading that hedged framing as more grounded than an unqualified rave review, while still remembering these are individual, unverified accounts.