The makers of Soylent claim it contains the nutrients necessary for a healthy lifestyle. Some people have experienced gastrointestinal problems from consumption of Soylent, particularly
flatulence. Although Soylent contains levels of lead and cadmium far below the national safety levels set by the FDA, it does contain 12 to 25 times the level of lead and 4 times the level of cadmium permitted in California without additional labeling. A lawyer who had worked on settlements of Proposition 65 suits described the case as "alarmist", as the levels are well below FDA limits of what is allowed in food products. Soylent's website displays the Proposition 65 warning required by California. Soylent Nutrition, Inc. published the position that the levels of heavy metal content in Soylent "are in no way toxic, and Soylent remains completely safe and nutritious". The company also published an infographic and spreadsheet based on an FDA study of heavy metal content in common foods, comparing two selected example meals to servings of Soylent with a similar amount of caloric intake.
Product recalls In 2016, the company announced it would halt sales of the Soylent bar due to reports of
gastrointestinal illness, including
nausea, vomiting, and diarrhea. They asked customers to discard any unconsumed bars and offered full refunds. On October 21, 2016, the company triggered a product recall. On October 27, 2016, they also halted sales of Soylent powder. The company stated that tests of the bar had not shown contamination, but some powder users had reported stomach-related symptoms. Soylent initially suspected
soy or
sucralose intolerance. However, on November 7, 2016, the company instead blamed
algal flour for making people sick and said it planned to remove it from future formulations of the powders and bars, which it did in the next formulation, version 1.7, introduced on December 15, 2016. The premade drinks use algal oil, not algal flour, and the company said it hadn't received any complaints about them, so it continued production. ==Reviews==