This product contains Hydrochloric Acid and an enzyme called Pepsin‚ both of which are naturally produced in the stomach to aid in digestion. Pepsin‚ a protein digesting enzyme derived from porcine‚ is known to have an off odor when exposed to heat and moisture. This is not an indication of spoilage. These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose‚ treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.