What are the side effects of vitamin B1?

Metabolism of vitamin B1 in your body

Vitamin B1 is obtained from either from diet or medication. Thiamine is absorbed into your body in your digestive system. Its absorption is 100% in doses found in food. Drug doses are less well absorbed after oral administration. In fact, absorption decreases in proportion to the dose taken.

Vitamin B1 changes to be active in your body. Your body’s weak reserves are in your muscles. L’excess thiamine eliminated through the renal system. Basically, there is no overdose of this vitamin (unlike fat-soluble vitamins).

Risk of thiamine overdose with drugs

Technically, overdose of vitamin B1 does not exist. Your kidney system removes excess doses. Therefore, no maximum safe dose has been established for medicines containing vitamin B1. However, as a precaution, pregnant women should avoid doses higher than 3 mg per day. Ask your doctor or pharmacist. Read the instructions carefully.

Side effects of vitamin B1 on the body

Since there is no overdose, side effects of vitamin B1 are rare. However, some medicines contain both vitamin B1 and vitamin B6. In this context, some side effect data Was reported:

  • heat stroke;
  • skin depigmentation;
  • sweat;
  • jostling;
  • itching;
  • nausea;
  • pulmonary edema;
  • severe allergic reaction (anaphylactic shock).

Beware of drug interactions with vitamin B1

Vitamin B1 from food does not interfere with the effects of your medications. Thiamine is even a source of health for your body. However, vitamin B1 can enter the food supplement interactions with certain medications.

  • Antacids and diuretics reduce the absorption of thiamine and thus the effectiveness of vitamin B1 tablets.
  • Fluorouracil, a chemotherapy treatment, prevents the liver from metabolizing vitamin B1 properly, making thiamine tablets less effective.

Factors in malabsorption of vitamin B1 from food or drugs

Whether it’s in your diet or in pills, vitamin B1 isn’t always well absorbed. Indeed, certain diseases or health problems prevent your body from doing so to use vitamin B1 properly :

  • alcoholic disease;
  • kidney dialysis;
  • chronic intestinal disease;
  • consumption of cabbage;
  • consumption of tea and coffee.

Even if it causes a deficiency, consult your doctor or pharmacist before starting treatment vitamin B1 supplements. Large doses are not always suitable for increasing the amount of substances consumed.

Like all B vitamins, vitamin B1, or thiamine, is essential for the health of your body. Diet is enough to prevent deficiencies. However, sometimes it is necessary to use it in the form of tablets. Listen to your doctor’s advice or pharmacist before starting treatment. This is especially true if you are pregnant, as the maximum permissible dose for you is lower than the classic drug doses.

Food products containing vitamin B1

Benefits of Vitamin B1

What are the symptoms of vitamin B1 deficiency?

What is vitamin B1 used for?

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