Vitamin C Oral: Uses, Side Effects, Interactions, Pictures, Warnings & Dosing - WebMD (2024)

FAQs

What are the side effects of vitamin C in the mouth? ›

Safety and side effects

When taken at appropriate doses, oral vitamin C supplements are generally considered safe. Taking too much vitamin C can cause side effects, including: Nausea, vomiting and diarrhea. Heartburn.

Barbiturates -- Barbiturates may decrease the effects of vitamin C. These drugs include phenobarbital (Luminal), pentobarbital (Nembutal), and seconobarbital (Seconal). Chemotherapy drugs -- As an antioxidant, vitamin C may interfere with the effects of some drugs taken for chemotherapy.

Diabetics should take vitamin C supplements carefully because the drug will raise blood sugar levels. Vitamin C should be used with caution in oxalate nephropathy or nephrolithiasis because acidification by ascorbic acid increases the likelihood of precipitation of cysteine, urate and oxalate stones.

In some people, vitamin C might cause side effects such as stomach cramps, nausea, heartburn, and headache. The chance of getting these side effects increases with higher doses. Taking more than 2000 mg daily is possibly unsafe and may cause kidney stones and severe diarrhea.

The upper limit for all adults is 2,000 mg a day. Although too much dietary vitamin C is unlikely to be harmful, large doses of vitamin C supplements might cause: Diarrhea.

Some vitamins that should not be taken together, or have dosage limitations, include vitamin C with vitamin B-12, vitamin A supplement with vitamin A-rich foods, folic acid (vitamin B9) and vitamin B12, and vitamin E with vitamin K.

Skincare ingredients not to mix with vitamin C

Vitamin C, AHAs (glycolic acid), and BHAs (salicylic acid) are acidic in nature. Layering them together can lower the skin's pH, making it more acidic. When skin pH goes off balance, it becomes a recipe for skin irritation, redness, and peeling.

Vitamin C supplementation is contraindicated in blood disorders like thalassemia, G6PD deficiency, sickle cell disease, and hemochromatosis. Avoid taking supplements immediately before or following angioplasty. Diabetic patients should take vitamin C supplements with care as it raises blood sugar levels.

The evening is not the best time because vitamin C is acidic and can cause problems when consumed on an empty stomach, especially in people with gastroesophageal reflux disease – of course the dosage matters.

Why should you not take vitamin C and B12 together? ›

Taking vitamin B-12 with vitamin C might reduce the available amount of vitamin B-12 in your body. To avoid this interaction, take vitamin C two or more hours after taking a vitamin B-12 supplement.

The amount of time Vitamin C remains in your system depends on the factors listed above, but in general, it usually takes between 12 and 24 hours for it to be processed and excreted. This means that if you take a single dose of Vitamin C, its concentration in your body should begin to decline within 12-4 hours.

Vitamin C. Vitamin C strengthens your gums and the soft tissue in your mouth. It can protect against gingivitis, the early stage of gum disease, and can prevent your teeth from loosening. Did you know that many animals (like elephants and dogs) create vitamin C in their bodies, even though humans can't?

Vitamin C: Promotes healthy capillaries and mouth tissue. Bleeding gums can be due to a lack of vitamin C. This essential vitamin also helps the body to fight off infections and bacteria, such as the Candida bacteria that causes tongue thrush.

Vitamin C is actually ascorbic acid, and the mouth doesn't respond well to too much acid. So if you're overshooting the recommended daily intake - which is easy to do, as most supplements are around the 500 to 1,000mg mark - this could be the cause of your ulcers. Alcohol can also irritate the lining of the mouth.

1. Ascorbic acid was absorbed across the mucosa of the human mouth. 2. Omission of sodium ions from the medium decreased the absorption of ascorbic acid.