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.
Magnesium is safe in children when used in dosages below the tolerable upper intake level of 65 mg per day for children one to three years of age, 110 mg per day for children four to eight years of age, and 350 mg per day for children older than eight years.8 Table 2 lists some common forms and dosages of magnesium.