BOTOX® Cosmetic is a biologic product that cannot be interchanged – or substituted – for another product. In fact, the FDA has stated BOTOX® Cosmetic is “non-interchangeable,” which means that its safety and effectiveness cannot be claimed by any other product. The potency – or strength – of BOTOX® Cosmetic is measured in scientifically defined units that cannot be compared to any other product, due to our unique manufacturing process. There are no substitutes for our product. People who are prescribed a biologic product have a right to know exactly what they are receiving. Be sure to ask which product you are being prescribed and why.