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Ascorbic acid tablets

vitamine C

Ascorbic acid is another name for vitamin C.

One dose a day of 25-75 mg is sufficient to prevent vitamin C deficiency. Higher doses are sometimes prescribed by doctors to treat a condition called scurvy (although this occurs only rarely in the UK).

Some ascorbic acid tablets should be chewed before they are swallowed and others need to be dissolved in water first. Check the label on the container and follow the directions given.

At a glance

  • Ascorbic acid is also known as vitamin C.

  • It is used to prevent and treat vitamin C deficiency.

  • Our bodies need vitamin C for healthy skin, bones, teeth, and cartilage.

  • You can get vitamin C from food, especially fruit and vegetables.

  • Take your tablets once a day as directed on the label.

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About ascorbic acid

Type de médicament

A vitamin

Utilisé pour

Preventing and treating vitamin C deficiency

Aussi appelé

Vitamin C, Ascur®, Ascorb®, AascorbDose®, Biocare®, Haliborange®, Vodexo®

Disponible sous forme de

Tablets, chewable tablets, soluble tablets, capsules

Ascorbic acid is also known as vitamin C. Our bodies need vitamin C to make a substance called collagen which is required for the health and repair of our skin, bones, teeth and cartilage. We get vitamin C from the food we eat, particularly fruit and vegetables. A lack of vitamin C in our diet over a period of time can lead to a condition called scurvy, although this is rare in the UK. Symptoms of scurvy include bleeding from the gums, bruising, and joint and muscle pains. It has also been suggested that a lack of vitamin C may cause poor wound healing and problems fighting infection, although this has not been proven. Carence en vitamine C can be treated with supplements of vitamin C (as ascorbic acid tablets) and eating foods which are rich in vitamin C.

Ascorbic acid is an ingredient of a number of vitamin preparations and some cough and cold remedies that are available to buy from retail outlets.

To make sure that this is the right treatment for you, before you start taking ascorbic acid it is important that you speak with your doctor or pharmacist:

  • If you are pregnant, trying for a baby or breastfeeding. This is because, while you are expecting or feeding a baby, you should only take medicines on the recommendation of a doctor.

  • Si vous avez déjà eu une réaction allergique à un médicament.

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  • Before you start taking the tablets, read the manufacturer's printed information leaflet from inside the pack.

  • Ascorbic acid tablets are usually taken once a day. Doses of 25-75 mg are sufficient to prevent vitamin C deficiency. You can take the tablets at whatever time of day you find easiest to remember, either before or after meals. If you have been prescribed a higher dose (more than 250 mg), your doctor will recommend that you take this in divided doses. Your dose will be on the label of the pack to remind you about what the doctor said to you.

  • Do not take more than the dose which has been recommended or prescribed.

  • Some ascorbic acid tablets should be chewed before they are swallowed and others need to be dissolved in water first. Check the label on the container of your supply and follow the directions given.

  • If you forget to take a dose, don't worry, just take the next dose when it is due. Do not take two doses at the same time to make up for a missed dose.

  • Foods that are rich in vitamin C include citrus fruits (like oranges, grapefruit, limes and lemons), berries (such as blackcurrants, strawberries, raspberries, blueberries and cranberries), cantaloupe melon, watermelon and kiwi fruit. Vegetables rich in vitamin C include spinach, green and red peppers, tomatoes, cauliflower, cabbage, broccoli, Brussels sprouts and potatoes. Try to include some of these fruits and vegetables regularly in the foods that you eat.

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Although ascorbic acid is unlikely to cause any side-effects at the recommended doses, large doses taken over a long period of time can be associated with unwanted effects (mainly stomach upset). If you experience any symptoms which you think may be due to the medicine, speak with your doctor or pharmacist for further advice.

  • Gardez tous les médicaments hors de la portée et de la vue des enfants.

  • Conserver dans un endroit frais et sec, à l'abri de la chaleur et de la lumière directes.

Informations importantes sur tous les médicaments

Si vous subissez une opération ou un traitement dentaire, informez la personne qui effectue le traitement des médicaments que vous prenez.

Never take more than the prescribed dose. If you suspect that you or someone else might have taken an overdose of this medicine, contact a doctor or the accident and emergency department of your local hospital for advice.

Ce médicament est pour vous. Ne le donnez pas à d'autres personnes même si leur état semble être le même que le vôtre.

Ne gardez pas de médicaments périmés ou indésirables. Apportez-les à votre pharmacie locale qui s'en débarrassera pour vous.

Si vous avez des questions concernant ce médicament, demandez à votre pharmacien.

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Questions fréquemment posées

What is the main role of vitamin C in my body?

Vitamin C is essential for making collagen, a substance critical for the health and repair of your skin, bones, teeth, and cartilage.

How can I get enough vitamin C from my food?

Many fruits and vegetables are rich in vitamin C. Good sources include citrus fruits (like oranges and lemons), berries (such as strawberries and blackcurrants), and certain vegetables like spinach, peppers, tomatoes, cauliflower, cabbage, broccoli, and potatoes. Regularly including these in your diet can help prevent deficiency.

What are the signs that I might not be getting enough vitamin C?

A severe lack of vitamin C can lead to scurvy, which is rare in the UK. Symptoms of scurvy can include bleeding gums, bruising easily, and pain in your joints and muscles. While not fully proven, some suggest a lack of vitamin C might also affect wound healing and the body's ability to fight infections.

Can I buy ascorbic acid supplements without a prescription?

Yes, ascorbic acid is available in various vitamin preparations and some cough and cold remedies that you can buy from retail outlets.

How should I take my ascorbic acid tablets?

Ascorbic acid tablets are typically taken once a day. Lower doses (25-75 mg) are usually sufficient to prevent vitamin C deficiency. You can take them at any time that's easy to remember, with or without food. If you have a higher dose (over 250 mg), your doctor might advise you to take it in divided doses. Always follow the instructions on the pack. Some tablets need to be chewed, while others must be dissolved in water before swallowing.

What should I do if I miss a dose of my ascorbic acid tablets?

If you forget to take a dose, there's no need to worry. Simply take your next regular dose when it is due. You should not take two doses at the same time to compensate for the one you missed.

Can taking too much ascorbic acid cause problems?

At recommended doses, ascorbic acid is unlikely to cause any side effects. However, taking very large doses for an extended period might lead to unwanted effects, mainly an upset stomach. If you experience any symptoms you think are related to the medicine, it's best to speak with your doctor or pharmacist.

Lectures complémentaires et références

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About the authorView full bio

Author image

Michael Stewart, MRPharmS

Medicine Leaflet Review Manager – Contractor, Pharmacist

BPharm (Hons), MRPharmS

Michael is a community pharmacist practicing in the Midlands and South Yorkshire with more than 20 years’ experience advising on medicines and medical conditions. He has a strong background in healthcare training, having produced and delivered training courses for pharmacy teams and staff of residential care settings, including nurses. He has also contributed to pharmacy advisory boards for the management of low acuity conditions in the community.

About the reviewer

Author image

Sid Dajani

Sultan Dajani qualified at the London School of Pharmacy in 1994 and became the youngest elected member of the Royal Pharmaceutical Society council since its founding in 1842.

Historique de l'article

Les informations sur cette page sont rédigées et examinées par des cliniciens qualifiés.

  • Prochaine révision prévue : 8 nov. 2027
  • 5 nov. 2024 | Dernière version

    Dernière mise à jour par

    Michael Stewart, MRPharmS

    Revu par

    Sid Dajani
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