R28 drops is indicated for painful menstruation that is accompanied by abdominal cramps (dysmenorrhea), absence of a woman�s menstrual period during her reproductive age or failure of menses (amenorrhea). R28 Acts on the involuntary muscle fibers of the internal organs (unstriped muscular fibres) and treats symptoms like exhaustion due to loss of blood, flushes of heat followed by perspiration, dull back pain etc.