On a summers day it will start to kill weeds within 2-3 hours, with visible signs in within 4-5 days it takes 6 or more hours in the winter. If it rains it will be much less effective. Roundup fumes are not toxic, it's a herbicide not a pesticide so try not to drench yourself in it or drink it.
The best time to take Magnesium-OK is after a meal, once a day with a liquid, every day, according to Wassen, the product manufacturer. The nutritional supplement tablets, specially formulated for women, contain eight vitamins and six minerals to maintain general vitality and health throughout the monthly cycle.
Nonpregnant women ages 19 to 30: 310 mg per day. Nonpregnant women age 31 and older: 320 mg per day. You don't have to get the recommended amount of magnesium every day. Instead, aim for that amount as an average over the course of a few days or a week.