
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 …
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.
Ascorbic acid (oral route) - Side effects & dosage - Mayo Clinic
Dec 1, 2025 · Ascorbic acid, also known as vitamin C, is necessary for wound healing. It is needed for many functions in the body, including helping the body use carbohydrates, fats, …
High-dose vitamin C: Can it kill cancer cells? - Mayo Clinic
Dec 15, 2023 · High-dose vitamin C has been touted by some as an effective alternative cancer treatment.
Ascorbic acid (intravenous route) - Side effects & uses
Feb 1, 2025 · Ascorbic acid injection is used to treat scurvy (Vitamin C deficiency) in patients who cannot take the medicine by mouth. It is used for short term treatment (up to 1 week) only.
Methenamine (oral route) - Side effects & dosage - Mayo Clinic
Apr 1, 2025 · Take in the morning and the evening. Children up to 6 years of age—Use and dose must be determined by your doctor. Children 6 to 12 years of age—500 milligrams (mg) to 1 …
Do the benefits of vitamin C include improved mood? - Mayo Clinic
Oct 8, 2022 · Nutrition and healthy eating Can vitamin C improve your mood? The link between vitamin C and mood might seem surprising, but people who have vitamin C deficiency often …
Vitamin a (oral route, intramuscular route) - Mayo Clinic
Dec 1, 2025 · Children 1 year of age and older: Oral, 60,000 RE (200,000 Units) as a single dose, the same dose being repeated the next day and again at 4 weeks. Note: Vitamin A is used in …
Vitamin B-12 - Mayo Clinic
Aug 13, 2025 · Vitamin B-12 supplements also are suggested for women who are pregnant, who are breastfeeding and not using any formula, or who follow vegetarian or vegan diets. Taking …
Vitamin D - Mayo Clinic
Mar 21, 2025 · Vitamin D is a nutrient the body needs, along with calcium, to build bones and keep them healthy. The body can absorb calcium only if it has enough vitamin D. Calcium is a …