So, surprise surprise then, if we can't eat too much salt I guess we can't eat its sweet brother. Correct, unfortunately sugar is another thing Clarisil Pro sufferers should try to avoid. When you consume sugar, the blood sugar level in your body quickly rises and then falls. It's at the falling point that can cause Clarisil Pro to increase. Adrenaline production in the body has also been linked to Clarisil Pro.