This would appear to be the case, as athletes who use legal substances to improve their performance also tend to use illegal substances as well. (sciencedaily.com)
However, note that not all steroids pass the required health and legal standards therefore before buying the products, make sure to buy only legal substances. (legalsteroidshere.com)
These red flags are usually due to clerical errors having to do with form and format, not with legal substance. (documentaid.com)