Stem cell therapy is generally considered safe when performed by qualified and experienced healthcare professionals in a controlled medical setting. As with any medical procedure, there are potential risks and side effects, which may include infection, bleeding, or reactions at the injection site. However, serious complications are rare. The safety and efficacy of stem cell treatments are subject to ongoing research, and it's vital to choose a reputable provider who follows strict regulatory and ethical guidelines. Discussing the potential risks and benefits with your healthcare provider can help you make an informed decision.