Sure Cleanse Keto The FDA only oversees the non-prescription products, such as Orlistat. Manufacturers must demonstrate to the FDA that a product is secure and effective for long-term human consumption. The weight reduction prescription eliminates undigested fats within one to 2 days of consumption. Side effects embrace delicate stools, belly pain, and low vitamin D levels. Some research factors to small amounts of weight reduction, but few excessive-quality scientific trials have been accomplished. Headaches and urinary tract infections have been reported as unwanted effects.