The Food and Drug Administration said it has added a warning about the risk to the over-the-counter drug Alli, which is made by GlaxoSmithKline. The prescription version Xenical is made by Roche.
The FDA identified 13 instances of liver damage associated with Alli and Xenical, but a causal effect between the drugs and the problem has not been established.
An MSNBC report at the second link below reports that the threat of embarrassment forces Alli users to eat healthy -- or else. The product can cause some ghastly side effects if users cheat on their diets.
Alli has been very popular despite the scary warning: Stray too far from your low-fat diet and you just might soil your pants.
The drug’s maker, GlaxoSmithKline, has been up front about the pill’s side effects, suggesting that first timers wear dark pants or bring a change of clothes to work until they get used to the diet pill’s potentially yucky consequences.
Some have even suggested wearing depends until the user is comfortable with using Alli.
Link here and here.