When taken at recommended doses, vitamin B-12 supplements are generally considered safe. The recommended daily amount of vitamin B-12 for adults is 2.4 mcg and 10 to 12 mcg for older adults. A simple blood test can check the levels of this vitamin in your blood.
Taking a vitamin D supplement or a multivitamin with vitamin D may help improve bone health. The recommended daily amount of vitamin D is 400 international units (IU) for children up to age 12 months, 600 IU for people ages 1 to 70 years, and 800 IU for people over 70 years. Check food and supplement labels to find out how much total calcium you're getting each day and whether you're reaching or going over the recommended daily total. Dietary calcium is generally safe, but there are risks if you take too much, especially in supplement form.
recommended daily allowance of carbs, Children—Use is not recommended. For treatment of erectile dysfunction and benign prostatic hyperplasia (daily use): Adults—5 milligrams (mg) once a day, taken at the same time each day, without regard for the timing of sexual activity. Children—Use is not recommended. For treatment of pulmonary arterial hypertension: The recommended daily amount of vitamin A is 900 micrograms (mcg) for men and 700 mcg for women. Daily vitamin A needs change slightly to 770 mcg for pregnant people and 1,300 micrograms for people who are breastfeeding.
recommended daily allowance of carbs, Eating fewer than 150 grams of carbs daily may help with initial weight loss. Low-carb diets are more restrictive and can cause you to miss important nutrients, like fiber and B vitamins. Simple carbs ...
