Common side effects of Finacea Gel include application site reactions (burning, stinging, tingling, dryness, tightness, scaling, itching, redness, irritation), dizziness, headache, diarrhea, nausea, stomach pain, loss of appetite, constipation, changes in taste, furry tongue, and dry mouth.
Candida Overgrowth. Yes, sometimes people with Candida overgrowth experience a strong metallic bitter taste as a result of the toxins it emits. I have found that taking pantethine and molybdenum helped greatly with undesirable tastes in the mouth caused by candida. Hormone Imbalance.
Candida, the yeast that causes thrush, is normally present in small amounts in the mouth and on other mucous membranes. It usually causes no harm. But when conditions are present that let the yeast grow uncontrolled, the yeast invades surrounding tissues and becomes an infection.