What happens if you have too much vitamin b3?

Liver disease: Taking high doses of niacin might increase liver damage. Don’t use large amounts if you have liver disease. Low blood pressure: Taking niacin in high doses might lower blood pressure and worsen this condition. Stomach or intestinal ulcers: Niacin might make ulcers worse.

How much b3 per day is too much?

Even higher doses of 3,000 mg/day or more can cause nausea, vomiting, and liver damage. The daily upper limits for niacin from dietary supplements are listed below….Can niacin be harmful?

Ages	Upper Limit
Adults 19+ years	35 mg

What happens when the body receives too much nutrients?

But routinely getting an overload of vitamins and minerals can hurt you. Too much vitamin C or zinc could cause nausea, diarrhea, and stomach cramps. Too much selenium could lead to hair loss, gastrointestinal upset, fatigue, and mild nerve damage.

Which nutrient can be harmful in excessive amounts?

Vitamin overdose occurs when a person ingests far more than the daily recommendation, for an extended period of time. Although the body can excrete excessive amounts of water-soluble vitamins such as vitamin C, it can retain fat-soluble vitamins such as vitamin A, which can be toxic.

Is 1000 mg of niacin a day too much?

For oral dosage form (extended-release tablets): Adults and children older than 16 years of age—At first, 500 milligrams (mg) per day, taken at bedtime. After 4 weeks, your doctor will increase your dose to 1000 mg per day, taken at bedtime. However, the dose is usually not more than 2000 mg per day.

What happens when you have too much vitamin b6?

However, taking too much vitamin B-6 from supplements can cause: A lack of muscle control or coordination of voluntary movements (ataxia) Painful, disfiguring skin lesions. Heartburn and nausea.

Can you overdose on vitamin B?

You’re also unlikely to get too much vitamin B if you’re taking any supplementation as directed. That said, overdose is possible — especially if you’re taking a supplement without receiving a deficiency diagnosis from your doctor. Symptoms of a vitamin B complex overdose include: excessive thirst.

How much B6 is too much?

Taking more than 1,000 mg of supplemental B6 a day may cause nerve damage and pain or numbness in the hands or feet. Some of these side effects have even been documented after just 100–300 mg of B6 per day ( 49 ). For these reasons, the tolerable upper limit of vitamin B6 is 100 mg per day for adults (3, 50 ).