Sixty-two hypertensive patients have been treated with a new oral antihypertensive-saluretic preparation designated as Rautrax. The blood pressure response is reported for all of the patients after 1 month, for 53 after 3 months and for 37 after 6 months of therapy. Dosage was 1 tablet of Rautrax twice daily, each tablet containing 50 mg of whole root Rauwolfia serpentina, 400 mg of a new oral saluretic agent, flumethiazide, and 400 mg of potassium chloride. Normal blood pressure readings were recorded for 30 of the 62 patients after 1 month, for 29 of the 53 after 3 months, and for 18 of the 37 patients after treatment for 6 months. Significant reductions in the blood pressure levels over pretreatment values were observed in 69 per cent, 83 per cent and 89 per cent of patients after 1, 3 or 6 months of therapy, respectively. Associated symptoms such as headache, dizziness and blurring of vision were completely relieved or greatly improved in the majority of the patients. Medication was withdrawn in two patients who developed purpura, lethargy and severe diarrhea. Other side effects included transient nasal stuffiness, itchiness, increased bowel motility, occasional weakness, epigastric discomfort and a feeling of ‘shockiness’ in two diabetic patients, but these were never sufficiently severe to require discontinuance of the drug. Patients on digitalis therapy who received Rautrax gave no signs of digitalis intoxication. There were no signs of potassium loss in any patient, though none were anticipated because Rautrax contains added potassium to combat excessive loss. After periods of administration lasting for 6 months, there was no sign of tolerance to the antihypertensive action of Rautrax. Potentiation of the antihypertensive effect of rauwolfia by the concomitant administration of a diuretic-saluretic agent has been confirmed. On the basis of the findings in this study, the clinical impression was gained that Rautrax represents a valuable addition to the resources available to the physician for the medical management of hypertensive vascular disease. The combination of hypotensive-saluretic action in a single preparation provides a convenient dosage form in the treatment of the ambulatory patient. [ABSTRACT FROM AUTHOR]