When I drop in, three women are on their way out, exuding relaxation, as if they’ve been to a spa. A technician tidies up the treatment room, where patients sit on elevated stools. IV bags release liquid into their veins as a flat-screen TV displays images of red leaves and water rushing over rocks. Many of the treatments include recognizable fare—vitamin C, biotin, and various amino acids—however questionable it may be to infuse unspecified doses of these “treatments” into healthy adults. But the kicker is the key ingredient in one of the cocktails: human placental extract.