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Vitamins and Minerals - Agonist/Antagonist.

Factors than enhance or block the activity of vitamins and minerals.
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Vitamin C
Agonist: Glutathione
Antagonist: Pectin, zinc, higher doses of iron, high intracellular glucose, A single large dose of Ascorbate.
B1 Thiamine
Agonist:Vitamin C,Citric Acid.
Antagonist: Mg, Ca, Cu, Zn, Mn, Fe, Alcohol (ethanol).
B2 Riboflavin
Antagonist:CU, Zn, Fe, Mn, alcohol.
B3 Niacin
Agonist:Tryptophan.
Antagonist: Alcohol.
B5 Pantothenic Acid
Antagonist: Alcohol.
B6 Pyridoxine
Agonist:Vitamin B2, Zn.
Antagonist: Alcohol.
Folate (Folic Acid)
Agonist: Zn, folate binding proteins (FBP), B3.
Antagonist:Alcohol,
Conjugase inhibitors:Lentils , Legumes, Cabbage, Oranges.
Biotin
Agonist: Lysine, B5, lipoic acid.
Antagonist: Avidin (egg white)
Vitamin A
Agonist:Fat, Vitamin E
Antagonist:Vitamin E (large doses), Fibre
Vitamin D
Vitamin D2 (Ergocalciferol)
Vitamin D3 (Cholecalciferol)
Agonist:Sunlight, Cholesterol, Vit. B3 & B2, PTH , Low phosphorous levels.
Antagonist:High amounts of phosphorus.
Vitamin E Tocopherols & Tocotrienols
Agonist:Fats.
Antagonist:Excess amount of Vit E.
Vitamin K Phylloquinone
Agonist:Fat, bile, pancreatic juices
Antagonist: Warfarin.
Calcium
Agonist:Food, lactose,sugars, xylitol
Antagonist: Fibre, oxalates, magnesium, low PTH, Unabsorbed Fatty acids, oestrogen deficiency in menopause.
Magnesium
Agonist:Vitamin D,lactose.
Antagonist: Iron, Calcium, Phytates, Fibre, Unabsorbed,Fatty acids.
Phosphorus
Agonist: Zinc, Vit D,low Magnesium in lumen.
Antagonist: Magnesium, Calcium, Aluminium.
Sodium
Agonist:Chloride, glucose, hydrogen, potassium.
Chromium
Agonist: Methionine, Histidine, Vitamin C
Antagonist: Phytates, heavy metals, antacids.
Copper
Agonist:Amino Acids, Organic acids like citric,
gluconic, lactic, acetic, and malic acids, Glutathione.
Antagonist: Zinc, Iron, Phytates, Calcium, Vit C Phosphorus, Molybdenum, Antacids.
Iodine
Antagonist: Thyroid gland.
Iron
Agonist:Vit C, acids, sugars, meat, poultry, fish, mucin
Antagonist: Polyphenols, oxalic acid, phytates, EDTA, phosvitin, nutrients.
Manganese
Agonist:Ligands - Histidine
Antagonist: Iron, fibre, oxalate, calcium, phosphorus.
Selenium
Agonist:Vitamin A, C, E, Decreased levels of glutathione in intestinal lumen.
Antagonist:Heavy metals, phytates.
Zinc
Agonist:Citric acid, picolinic acid, histidine, cysteine, glutathione, tripeptides
Antagonist: Phytates, oxalates, polyphenols, fibre, nutrients such as magnesium, iron, calcium.
Boron
Agonist:Calcium.