Uterine relaxant with least side effects: (LQ)
a. Nifedepine. is equally effective compared to routinely used drugs in premature labour.
b. Ritodrine cause side effects like palpitations, arrythmias, ischemia and pulmonary edema magnesium is better tolerated But it can produce hypotension, palpitation, headache and muscle weakness.
c. Magnesium sulphate drug for treatment of premature labour. Calcium channel blockers reduce calcium influx into cells, reducing muscle contractility