This condition can give you headaches and make you feel tired. It can also make you retain water. An overdose of glycyrrhizin can lead to harmful conditions such as high blood pressure and even heart attack. These symptoms can show up within one week if you're taking more than 100 g of glycyrrhizin every day. People don't usually die from taking too much licorice or glycyrrhizin, but you can have side effects even if you're taking just an average amount of licorice.
Some people get muscle pain, and others get numbness in their arms and legs.
Too much licorice can also cause weight gain. You can avoid these problems if you keep your dosages within the recommended guidelines. If you have any medical problems or concerns, check with your health care provider. Don't use licorice if you've been told you have high blood pressure, or a kidney, heart, or liver condition. If you're pregnant, do not take licorice products.