You have not given the reasons for your doctor prescribing Ditide. It is a diuretic, which increases the production of urine and thus removes water from the body. The moment you stop the drug, water comes back and weight is back to where it was before. The drug is to be used only when there is oedema (water retention) in the body either due to cardiac or kidney reasons. Side effects include: cramps, weakness, blood disorders, reversible kidney impairment.