There is no credible scientific evidence that LIMU is an effective product, as of May 2015. The FDA has removed similar seaweed products from the market in the past, and it categorizes some varieties of limu seaweed as poisonous plants.
LIMU makes many of the same claims that banned products have used in the past. Claims from the defunct product Royal Tongan Limu include the treatment of arthritis and ADHD, and LIMU claims to improve joint mobility and provide mood benefits such as increased energy and more restful sleep.
Gary Raser is the owner of LIMU's parent company, The Limu Company. Raser is the former owner of Dynamic Essentials, a company involved with the banned product Royal Tongan Limu.