Most of the time, these drugs are being prepared in nonsterile environments, which could lead to contaminants and cause harm to the body, says Lemrey Al Carter, Pharm.D., a pharmacist and the executive director of the National Association of Boards of Pharmacy (NABP)

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For example, Wegovy (semaglutide) was approved for chronic weight management by the FDA in 2021
Obes Med 52: 100569
A balanced diet and regular physical activity may enhance treatment results
Uses of Semasize Solution for Injection Benefits of Semasize Solution for Injection Management of Obesity Semasize 0.25 mg Solution for Injection supports weight loss and weight maintenance in adults with obesity and adults with overweight who have at least one weight-related health condition