Bern, Switzerland (GenevaLunch) - Food supplements with the label Hydroxycut, Lovate and Muscle Tech, sold online, can cause serious liver problems and should be avoided, the federal government says. The warning comes on the heels of similar notices in Finland and the US. Swiss customs officials say the products have made it into the country. If symptoms appear, the product should be stopped immediately. Symptoms of liver problems can include: loss of appetite, nausea, vomiting, stomach pain, clear urine and jaundice.