MY HUSBAND, 88 HAS A CONSTPATION PROBLEM HE TAKES CLEAR LAX ALMOST every day a AT BED TIME, IT HAS BEEN 4-OR 5 DAYS NO BM TODAY 2 PM TOOK MAGNESIUM CITRATE ORAL SOLUTION. I/2 BOTTLE GLASS OF WATER AS DIRECTED, NO RESULTS, TOOK REST OF BOTTLE = 10 OZ, RESULTS SMALL NARROW BM. NOW IT HAS BEEN 4 HRS. NO CRAMPS OR PAIN !