Monday, June 22, 2020

Vitamins are best taken after meals

In the minds of people, vitamins have fewer side effects and greater safety. Therefore, many people take vitamins like vegetables and fruits. They are very casual. Sometimes they eat before meals and sometimes after meals. There is no regularity. Most manufacturers of vitamin medicines only label the usage and dosage on the bottle label, and do not indicate the precautions, and do not have instructions for taking before or after meals.

In fact, taking vitamin drugs, like other drugs, also has certain regulations, requirements and precautions, that is, taking after meals. Vitamins are mainly absorbed by the small intestine after oral administration. If taken before meals, because the gastrointestinal tract has no food, the drug is quickly absorbed into the blood when taken on an empty stomach, resulting in an increase in the concentration of vitamins in the blood. The kidneys are excreted through the urethra, which significantly reduces the efficacy of the drug.

Such as vitamin B1, B2 and B6, the utilization rate of fasting service decreases, while the absorption rate after meals is stable, and the absorption rate increases linearly with the increase of the dose. This is due to the fact that the rate of gastric content discharge is slowed down after eating, so that the drug is slowly transported to the upper part of the small intestine, avoiding saturation in the absorption mechanism.

Do not take vitamin C with B12

Co-enzyme vitamin B12 and vitamin C are more effective for absorption after meals, but the two drugs cannot be taken at the same time. If taken at the same time, the bioavailability of B12 will be reduced and the efficacy will be greatly reduced. To avoid B12 deficiency, the two should be taken 2 to 3 hours apart.

Similarly, oral vitamin D2 should also be taken after meals, it is best to eat some fatty foods (such as fritters, pork, etc.) to facilitate the dissolution and absorption of the drug. If it is used to treat infantile hand and foot convulsions, calcium should be added first.

Vitamin PP has few side effects after meals

Vitamin AD (cod liver oil pills), vitamin E and vitamin PP (niacin, niacin) should also be taken after meals. AD pills are suitable for taking 15 minutes after a meal, and eat fatty foods to help absorption. The side effects of vitamin PP include skin flushing, itching, burning, and even palpitations, urticaria, nausea, and vomiting. Taking it after meals can significantly reduce side effects. In order to avoid long-term and large doses of this product to stimulate the gastrointestinal tract, it should be taken after meals.

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