There is a lot of truth in this summary, but it is also simplistic. There is no doubt that Native Americans suffered enormously at the hands of white Americans, but federal Indian policy was shaped as much by paternalism, however misguided, as by white greed.
Quick Answer. Magnesium citrate is a saline laxative that generally produces a bowel movement within 30 minutes to three hours, according to WebMD. While patients sometimes use it for relief of constipation, whenever possible they should choose milder laxatives. Some surgical procedures require preparation using magnesium citrate with other laxatives.
With Levitra, the effects last for about 5 hours. With Viagra, the effects last approximately 4 hours. Cialis works a bit faster (within about 15 minutes), and the effects last much longer -- up to 36 hours in some cases.