Vitamin C Tablet: Uses, Dosage, Side Effects, Precautions and Alternates

Quick overview

Vitamin C Tablet (ascorbic acid) is a vitamin supplement used to prevent or treat low vitamin C levels, help the body absorb non-heme iron from plant-based foods, and support wound healing and tissue repair. It works as an antioxidant and supports collagen formation. It is available as capsules and chewable tablets and comes with some warnings around high, long-term doses and certain health conditions.

What is Vitamin C Tablet

Vitamin C, also called ascorbic acid, is a vitamin the body needs to form blood vessels, cartilage, muscle, and collagen in bones, and it helps with healing. The body cannot make vitamin C on its own, so it must come from food or supplements.

Vitamin C Tablet uses

• Preventing or treating low vitamin C levels (vitamin C deficiency), also known as scurvy
• Helping the body absorb non-heme iron from plant-based foods or supplements
• Supporting wound healing and tissue repair

Benefits of Vitamin C Tablet

• Supports immune system function and may reduce how long a common cold lasts
• Acts as an antioxidant, protecting cells from damage caused by free radicals
• Helps the body make collagen, which keeps skin, cartilage, teeth, bones, and blood vessels healthy

How Vitamin C Tablet works

Vitamin C acts as an antioxidant, protecting the body's cells from damage caused by free radicals that come from normal body processes, tobacco smoke, sunlight, and other sources. It is also needed to make collagen, a protein important for wound healing and connective tissue, and it helps the body absorb iron from plant foods.

Vitamin C Tablet dosage

Vitamin C supplements come mainly as capsules that are swallowed or as tablets that are chewed. People who smoke need more vitamin C per day than people who don't smoke. Before having certain medical tests, such as blood sugar or hidden blood stool tests, tell your healthcare professional that you take vitamin C, since it may affect the results.

Available forms and strengths

• Capsules
• Chewable tablets

Side effects of Vitamin C Tablet

Common

• Diarrhea, nausea, or loose stools
• Heartburn
• Stomach cramps or bloating
• Tiredness, sleepiness, or trouble sleeping (insomnia)
• Headache

Serious

• Higher risk of kidney stones, mainly with high, long-term doses
• Rare allergic reactions such as rash, itching, or swelling of the face and throat
• Hemolytic anemia in people with a genetic condition called G6PDH deficiency

Warnings and precautions

• Taking high doses of vitamin C over a long period of time (over 2,000 mg a day) raises the risk of serious side effects. People with a genetic condition called G6PDH deficiency can develop a type of anemia called hemolytic anemia if they take high doses of vitamin C. 
• Vitamin C can interact with several medicines, including aluminum-containing drugs, chemotherapy medicines, estrogen-containing pills, protease inhibitors, statins, niacin, iron supplements, and the blood thinner warfarin. 
• People getting chemotherapy or radiation therapy should be cautious with vitamin C, since it may interact with these treatments.
• Pregnancy: Do not exceed the recommended daily dose.
• Breastfeeding: Use with caution if you have kidney stones or kidney disease.
• Kidney: Vitamin C can increase how much aluminum the body absorbs from aluminum-containing medicines, which can be harmful for people with kidney conditions. High doses of vitamin C may also raise the risk of kidney stones.
• Liver: Inform your doctor if you have iron overload disorders.
• Alcohol: Tell your doctor about all supplements and medicines you are taking.
• Driving: Chew the tablet properly if it is a chewable form.

When to see a doctor

• Tell your healthcare professional that you take vitamin C before having certain medical tests, because it may change test results.
• If you have a history of kidney stones or other health conditions, discuss this with a healthcare professional before taking vitamin C supplements.

Alternatives

• Ascorbic Acid Tablet
• Redoxon
• Sodium Ascorbate