Yerba Mate – Persistent epigastric pain; sense of dryness of mouth and pharynx, anorexia, pyrosis, nervous depression, neurasthenia. Somnolence; incapacity for work, diminution of urinary secretion, headache and pruritus. Hemicrania. Renal colic. Is said to be of use as a prophylactic against sunstroke, being a safe stimulant to the circulation, to diaphoresis and diuresis.