Vitamin B-12 - Mayo Clinic
Aug 13, 2025 · Know the causes of a vitamin B-12 deficiency and when use of this supplement is recommended.
Vitamin D - Mayo Clinic
Mar 21, 2025 · 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.
Water: How much should you drink every day? - Mayo Clinic
Oct 12, 2022 · No single formula fits everyone. But knowing more about your body's need for fluids will help you estimate how much water to drink each day.
Vitamin C - Mayo Clinic
Aug 14, 2025 · Vitamin C is an essential nutrient found in foods and available as a supplement you take by mouth. Learn about its potential benefits and the causes of vitamin C deficiency.
Biotin (oral route) - Side effects & dosage - Mayo Clinic
Nov 1, 2025 · Recommended Dietary Allowances (RDAs) are the amount of vitamins and minerals needed to provide for adequate nutrition in most healthy persons. RDAs for a given nutrient may vary …
Calcium and calcium supplements: Achieving the right balance
Nov 1, 2022 · Considering calcium supplements? First figure out how much calcium you need. Then weigh the pros and cons of supplements.
Vitamin B-6 - Mayo Clinic
Aug 13, 2025 · Vitamin B-6 (pyridoxine) is important for normal brain development and for keeping the nervous system and immune system healthy. Food sources of vitamin B-6 include poultry, fish, …
Caffeine: How much is too much? - Mayo Clinic
Feb 21, 2025 · Is caffeine causing you problems? Find out how much is too much and if you need to cut down.
Too much vitamin C: Is it harmful? - Mayo Clinic
Feb 20, 2025 · Vitamin C is an essential nutrient, but you can get too much of it. If you're an adult, limit yourself to no more than 2,000 milligrams (mg) of vitamin C a day. The recommended upper limit for …
Exercise: How much do I need every day? - Mayo Clinic
Jul 26, 2023 · Find out how much exercise you need and how to get it.