The below doses are based on scientific research, publications, traditional use, or expert opinion. Many herbs and supplements have not been thoroughly tested, and safety and effectiveness may not be proven. Brands may be made differently, with variable ingredients, even within the same brand. The below doses may not apply to all products. You should read product labels, and discuss doses with a qualified healthcare provider before starting therapy.The following doses are the U.S. recommended daily allowance (RDA) of thiamine taken by mouth: in adults 19 and older, 1.2 milligrams for males and 1.1 milligrams for females; and in pregnant or breastfeeding women of any age, 1.4 milligrams. Doses of 1-2 milligrams have been taken by mouth daily as a dietary supplement in adults. In people who have or are at risk of thiamine deficiency, 50 milligrams of thiamine have been taken by mouth daily, and doses of 50-100 milligrams of thiamine have been injected into the vein 3-4 times daily. For Alzheimer's disease, 3 milligrams of thiamine has been taken by mouth daily in three divided doses for up to one year.
For menstrual cramps, 100 milligrams of thiamine has been taken by mouth daily for three months. For epilepsy, 50 milligrams of thiamine has been taken by mouth daily for six months. For alcohol withdrawal, 100 milligrams of thiamine hydrochloride has been injected into the muscle or vein. For alcohol liver disease, 100 milligrams of thiamine has been injected into the vein. For coma or hypothermia (dangerously low body temperature) of unknown origin, 100 milligrams of thiamine has been injected into the muscle or vein. For thiamine deficiency caused by nutrition delivered through the vein, 100 milligrams of thiamine has been injected into the vein. For Wernicke-Korsakoff syndrome (a brain disorder caused by thiamine deficiency), 5-200 milligrams of thiamine have been injected into the muscle or vein, sometimes in divided doses for over two days, or at least 100 milligrams of thiamine has been injected into the vein or muscle. The following doses of thiamine taken by mouth are considered to be adequate intake (AI): 0.2 milligrams in infants 0-6 months old;
0.3 milligrams in infants 7-12 months old; 0.5 milligrams in children 1-3 years old; 0.6 milligrams in children 4-8 years old; 0.9 milligrams in children 9-13 years old; 1.2 milligrams in males 14-18 years old; and 1 milligram in females 14-18 years old. The RDA for pregnant or breastfeeding women of any age is 1.4 milligrams daily. This evidence-based monograph was prepared by The Natural Standard Research CollaborationBecause vitamin B1 (thiamin) facilitates energy utilization, requirements are tied to energy intake, which can be very much dependent on activity levels. The recommendations are based on an average caloric intake. In 1993, the European Scientific Committee for Food set population reference intakes (PRI) for vitamin B1 (thiamin) in milligrams (mg) per day (14): 18 years and older In 1998, the U.S. Food and Nutrition Board set a recommended dietary allowance (RDA) for vitamin B1 (thiamin), based on the prevention of deficiency in generally healthy individuals (15):
19 years and older* * For adults, the RDA is 0.5 mg per 1,000 kcal, which amounts to a range of 1.0–1.1 mg per day for women and 1.2–1.5 mg for men, based on an average caloric intake. As some studies have found inadequate dietary intake and thiamin insufficiency to be more common in elderly populations (16), at least 1.5 mg/day thiamin can be recommended for older adults. For a detailed overview of recommended daily intakes (PRIs/RDAs) of vitamins and minerals for adults derived from different countries and organizations see PDF. Chocolate & Cocoa Benefits? Sterols, Sterolins & Beta-Sitosterol Bone Loss / Osteoporosis Muscle Spasms & Cramps Spiritual Health & Healing DRI / RDA for B-Vitamins: Low Levels / Deficiency - Symptoms and/or Risk Factors: High levels / Overdose / Toxicity / Negative Side Effects - Symptoms and/or Risk Factors: Vitamin B1 - Thiamine: Vitamin B2 - Riboflavin: Vitamin B3/4 - Niacin / Niacinamide:
Vitamin B5 - Pantethine / Pantothenic Acid: Vitamin B6 - Pyridoxine: Vitamin B7 - Biotin: (N-Carboxybiotinyl Lysine / Biotinyl-5'AMP) Vitamin B9 - Folate / Folic Acid: * Best time to take Folic Acid Vitamin B8 - Inositol / Vitamin B11 - Choline: Vitamin B10 - PABA: Best time to take Vitamin B1 Best time to take Vitamin B2 Best time to take Vitamin B3/4 Best time to take Vitamin B5 Best time to take Vitamin B6 Best time to take Biotin Best time to take Inositol, Choline, or Lecithin Click here for DRI / RDA and information on Vitamin B12 & Vitamin B15 (pangamic acid) Page 1 - B-Complex Vitamins (Information on medical and nutritional interactions) Typical Food Sources for all B-Vitamins: Best time to take PABA General recommendations for nutritional supplementation Vit A - D - K Vit B - Complex This site uses cookies from advertisers (e.g. Google) to deliver its services, to personalize ads, and to analyze traffic.
Continued use of this site constitutes acceptance of cookies in accordance with the EU Cookie Policy.Vitamin B complex consists of 8 vitamins: biotin, folic acid, pyridoxine, cobalamin, niacin, pantothenic acid, thiamine and riboflavin. Deficiencies of these vitamins can lead to serious health problems. So the Food and Nutrition Board of the Institute of Medicine has formed dietary recommended values for these vitamins. Consuming a varied and balanced diet will help reach your daily allowances. Thiamine, or vitamin B-1, helps your heart, muscle and nervous systems function properly. The RDA is 1.1 mg for women ages 19 and older and 1 mg for girls ages 14 to 18. Males ages 14 and older require 1.2 mg per day. The RDA is 0.9 mg for ages 9 to 13, 0.6 for ages 4 to 8 and 0.5 mg for ages 1 to 3. Riboflavin, or B-2, helps your body make red blood cells. The RDA is 1.3 mg for males ages 14 and older. Girls ages 14 to 18 require 1 mg and women ages 19 and older require 1.1 mg daily. Niacin helps your digestive and nervous systems function properly.
The RDA is 16 mg for males and 14 mg for females ages 14 and older. The RDA is 6 mg for ages 1 to 3, 8 mg for ages 4 to 8 and 12 mg for ages 9 to 13. Pantothenic acid is required for growth and metabolism. The RDA is 5 mg for people ages 14 and older, 3 mg for ages 4 to 8 and 2 mg for ages 1 to 3. Pyridoxine, or vitamin B-6, is required for a healthy immune and nervous system. People ages 19 to 50 require 1.3 mg of pyridoxine daily. The RDA is 1.7 mg for men over ages 51 and 5.1 mg for women of the same age. Cobalamin, or vitamin B-12, regulates the production of red blood cells and DNA. People ages 14 and older require 2.4 mcg, and children ages 9 to 13 require 1.8 mcg per day. Your body needs biotin for growth and metabolism. The RDA is 30 micograms for ages 19 and older, 25 mcg for ages 14 to 18, 20 mcg for ages 9 to 13, 12 mcg for ages 4 to 8 and 8 mcg for ages 1 to 3. Folic acid helps your body make proteins and red blood cells. People ages 14 and older require 400 mcg per day.