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What Is The Normal Dose Of Vitamin C

Your Value Is Between 80

What’s the Optimal Dose of Vitamin C?

These values are only slightly above those that can be achieved naturally by exposing the skin to the sunlight. It is assumed that these values cannot be achieved without taking vitamin D in dietary supplement form. To date, no risks are known which would result from consistently high values in the range of 80-100 ng/ml.

What Are The Side Effects Of Ascorbic Acid

Get emergency medical help if you have any of these signs of an allergic reaction: hives difficult breathing swelling of your face, lips, tongue, or throat.

Stop using ascorbic acid and call your doctor at once if you have:

  • joint pain, weakness or tired feeling, weight loss, stomach pain
  • chills, fever, increased urge to urinate, painful or difficult urination or
  • severe pain in your side or lower back, blood in your urine.

Common side effects may include:

  • heartburn, upset stomach or
  • nausea, diarrhea, stomach cramps.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Can You Take Too Much Vitamin D

While it is possible to take too much vitamin D, toxicity is very rare.

In fact, you would need to take extremely high doses of 50,000 IU or more for a long period of time .

Its also worth noting that it is impossible to overdose on vitamin D from sunlight .

Although 4,000 IU is set as the maximum amount of vitamin D you can take safely, several studies have shown that taking up to 10,000 IU daily wont cause side effects (

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How Much Do I Need

Vitamin C dissolves in water and is not stored in the body, so we do need a consistent supply to maintain adequate levels, says registered dietitian Jillian Greaves. The recommended daily intake is about 75 mg per day for women and 90 mg per day for men. For women, you could get more than your daily requirement by eating one kiwi and men could have half a papaya and call it a day.

Safety Issues Reported In Literature

Simply Potent

Evidence indicates that patients who show no prior signs or history of renal malfunction are unlikely to suffer ill effects to their renal systems as a result of intravenous ascorbate . In cases where there are preexisting renal problems, however, caution is advised. In addition a kidney stone forming in one patient with a history of stone formation , a patient with bilateral urethral obstruction and renal insufficiency suffered acute oxalate neuropathy . A full blood chemistry and urinalysis work-up is thus recommended prior to the onset of intravenous ascorbate therapy.

Campbell and Jack reported that one patient died due to massive tumor necrosis and hemorrhaging following an initial dose of intravenous ascorbate. It is thus recommended that treatment start at a low dose and be carried out using slow drip infusion. Fatal Hemolysis can occur if a patient has glucose-6-phosphate dehydrogenase deficiency. It is thus recommended that G6PD levels be assessed prior to the onset of therapy. The treatment is contra-indicated in situations where increased fluids, sodium, or chelating may cause serious problems. These situations include congestive heart failure, edema, ascites, chronic hemodialysis, unusual iron overload, and inadequate hydration or urine void volume .

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How Do I Get Sufficient Dietary Intake Of Vitamin C

We recommend using the GB HealthWatch Diet and Nutrition Evaluator to get the most accurate estimate of your current vitamin C intake.

The best way to get sufficient vitamin C in your diet is to eat enough fruits and vegetables. Fresh vegetable juices and salads are also excellent sources of vitamin C.

If you cannot get enough fresh vegetables or fruits, consider taking a vitamin C supplement as an alternative. Unless you have certain genetic predispositions or health conditions such as iron overload, thalassemia, and sickle cell anemia, vitamin C supplementation is a good way to ensure adequate vitamin C intake to meet your dietary needs.

How To Take It

The best way to take vitamin C supplements is 2 – 3 times per day, with meals, depending on the dosage. Some studies suggest that adults should take 250 – 500 mg twice a day for any benefit. Talk to your doctor before taking more than 1,000 mg of vitamin C on a daily basis and before giving vitamin C to a child.

Daily intake of dietary vitamin C is listed below.


  • Men over 18 years: 90 mg
  • Women over 18 years: 75 mg
  • Pregnant women 14 – 18 years: 80 mg
  • Pregnant women over 18 years: 85 mg
  • Breastfeeding women 14 – 18 years: 115 mg
  • Breastfeeding women over 18 years: 120 mg

Because smoking depletes vitamin C, people who smoke may need an additional 35 mg per day.

The dose recommended to prevent or treat many of the conditions mentioned in the Uses section is often 500 – 1,000 mg per day.

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What Is Vitamin C Used For

The one condition vitamin C can definitely treat is vitamin C deficiency. According to research from the Centers for Disease Control and Prevention , an estimated 7.1% of the U.S. population can be classified as being vitamin C deficient. Those with a severe dietary deficiency of vitamin C can develop scurvy, characterized by bruising, bleeding gums, weakness, fatigue, and rash.

Outside of a known deficiency, vitamin C is believed by some to aid in the treatment or prevention of numerous diseases, including colds, asthma, bronchitis, cancer, chronic pain, cataracts, gastritis, glaucoma, heart disease, high blood pressure, osteoarthritis, and Parkinson’s disease.

Although the evidence supporting these claims is generally weak, there have been several promising findings in recent years.

Recommended Daily Intake Of Vitamins And Minerals

High Dose IV Vitamin C – Boost Immune System


– The above-stated values are not meant for diagnosis, these are mainly reference values for informational purposes.

– Most of these values are based on a 2000 calorie intake for people of 4 or more years of age. This reference is applied because it approximates the caloric requirements for postmenopausal women. This group has the highest risk for excessive intake of calories and fat.

– Values on labels are stated Daily Reference values of Recommended Daily Intake . The RDI is a renewed value referring to the old Recommended Dietary Allowance . All values in this table are new RDI values.

– Maximum values are based on Food and Drug Administration values, the World Health Organization , BBC Health values, the European Union Directive and values from various other governmental and private agencies in the USA and the UK.

– Values from the World Health Organization may be somewhat lower than those of the FDA for various vitamins and minerals. Examples of differences : Mg: -60 mg, Vitamin B6: -0,5 mg, Vitamin B12: -4 µg, vitamin C: -15 mg, Vitamin K: -35 mg, folate: -220 µg.

– Elements that have a recommended daily intake within µg range are sometimes referred to as trace elements .

Information on vitamins can be found from the vitamins overview page

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Before Taking Ascorbic Acid

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.
  • If you have ever had an allergic reaction to a medicine.

Before Taking This Medicine

You should not use ascorbic acid if you have ever had an allergic reaction to a vitamin C supplement.

Ask a doctor or pharmacist about using ascorbic acid if you have:

  • kidney disease or a history of kidney stones

  • hereditary iron overload disorder or

  • if you smoke .

Your dose needs may be different during pregnancy or while you are breast-feeding a baby. Do not use ascorbic acid without your doctor’s advice in either case.

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What Is Vitamin D And Why Is It Important

Vitamin D belongs to the family of fat-soluble vitamins, which include vitamins A, D, E and K. These vitamins are absorbed well with fat and are stored in the liver and fatty tissues.

There are two main forms of vitamin D in the diet:

  • Vitamin D2 : Found in plant foods like mushrooms.
  • Vitamin D3 : Found in animal foods like salmon, cod and egg yolks.

However, sunlight is the best natural source of vitamin D3. The UV rays from sunlight convert cholesterol in your skin into vitamin D3 .

Before your body can use dietary vitamin D, it must be activated through a series of steps .

First, the liver converts dietary vitamin D into the storage form of vitamin D. This is the form that is measured in blood tests. Later, the storage form is converted by the kidneys to the active form of vitamin D thats used by the body .

Interestingly, D3 is twice as effective at raising blood levels of vitamin D as vitamin D2 .

The main role of vitamin D in the body is to manage blood levels of calcium and phosphorus. These minerals are important for healthy bones .

Research also shows that vitamin D aids your immune system and may reduce your risk of heart disease and certain cancers .

A low blood level of vitamin D is linked to a greater risk of fractures and falls, heart disease, multiple sclerosis, several cancers and even death (

16 ).

For instance, an analysis of five studies examined the link between vitamin D blood levels and colorectal cancer .

Types Of Cancers Treated With Ivc By The Riordan Clinic:

Vitamin C 1200mg and Zinc 40mg  High Strength Vegan ...

The Riordan clinic has treated hundreds of cancer patients using the Riordan protocol. At the same time, Riordan Clinic Research Institute has been researching the potential of intravenous vitamin C therapy for over thirty years. Our efforts have included in vitro studies, animal studies, pharmacokinetic analyses, and clinical trials. The Riordan IVC protocol, along with the research results that have motivated its use, is described below.

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Optimal Vitamin D Dose With Blood Test

If you suffer from a disease that makes it absolutely necessary for your vitamin D level to be in the optimal range, or if you want to know your exact level, then you should have your vitamin D level measured. The blood test to measure your vitamin D levels is called the 25D blood test.

The result of the blood test helps determine how much vitamin D you should take in the form of vitamin D capsules or vitamin D drops, etc., or whether you should increase your exposure to the sun in order to build up an optimal vitamin D level.

Since everyone absorbs vitamin D differently, the 25D value may develop differently. This means that not ever person will achieve exactly the same 25D level in their blood even if they take the same dose of vitamin D.

The following recommendations represent guidelines on how your vitamin D blood levels could increase when taking the respective amount of vitamin D. Therefore, this information should not be regarded as a guarantee for the specified values.

About 3 months after you begin taking your dose, you should have your vitamin D level re-measured to check on things. Once you have the result, you can assess how your vitamin D level has changed during the time you’ve been taking it, as well as to what extent the dose should be adjusted.

What Is Ascorbic Acid

Ascorbic acid occurs naturally in foods such as citrus fruit, tomatoes, potatoes, and leafy vegetables. Vitamin C is important for bones and connective tissues, muscles, and blood vessels. Vitamin C also helps the body absorb iron, which is needed for red blood cell production.

Ascorbic acid is used to treat and prevent vitamin C deficiency.

Ascorbic acid may also be used for purposes not listed in this medication guide.

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How Much Vitamin C Do I Need In My Diet

The Dietary Guidelines for Americans Recommended Dietary Allowances are based on age and gender . Smokers need to consume 35 mg/day more dietary vitamin C to make up for vitamin C depletion caused by smoking. A Tolerable Upper Intake Level of 2,000 mg/day is recommended by the Institute of Medicine of the National Academies. Although high levels of vitamin C from supplements or medical prescriptions are generally harmless for most individuals, some people do have adverse reactions .

Table 1. RDA for vitamin C


What Happens If I Take Too Much Vitamin D

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Taking too many vitamin D supplements over a long period of time can cause too much calcium to build up in the body . This can weaken the bones and damage the kidneys and the heart.

If you choose to take vitamin D supplements, 10 micrograms a day will be enough for most people.

Do not take more than 100 micrograms of vitamin D a day as it could be harmful. This applies to adults, including pregnant and breastfeeding women and the elderly, and children aged 11 to 17 years.

Children aged 1 to 10 years should not have more than 50 micrograms a day. Infants under 12 months should not have more than 25 micrograms a day.

Some people have medical conditions that mean they may not be able to safely take as much. If in doubt, you should consult your doctor.

If your doctor has recommended you take a different amount of vitamin D, you should follow their advice.

You cannot overdose on vitamin D through exposure to sunlight. But always remember to cover up or protect your skin if you’re out in the sun for long periods to reduce the risk of skin damage and skin cancer.

Page last reviewed: 03 August 2020 Next review due: 03 August 2023

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Your Value Is Between 100

These values are considered to be too high, but are not classified as harmful to health. Nevertheless, you should reduce your 25D value to below 100 ng/ml. To achieve this, simply stop taking vitamin D in dietary supplement form and do not sunbathe. After roughly 3 months, have your 25D level retested. After your Vitamin D value is back in the normal range, adjust your vitamin D intake accordingly.

Which Disease Is Caused Due To Lack Of Vitamin E

Vitamin E has powerful antioxidant and anti-inflammatory actions. So, vitamin E boosts the immune system and also it may protect against heart disease, some types of cancer, cognitive decline, and eye disorders.

May prevent coronary heart disease

Vitamin E may prevent heart disease, as it inhibits oxidation of LDL-cholesterol which causes atherosclerosis. Moreover, vitamin E may prevent the formation of blood clots. There are studies that have linked high vitamin E intake to lower rates of heart disease.

May prevent cancer

The antioxidant properties of vitamin E may also protect from some types of cancer. Vitamin E can enhance the immune system and block the formation of carcinogenic compounds. It seems that vitamin E may be beneficial against breast cancer, colon cancer, and prostate cancer.

In many cases, doses up to 400 IU for many years have been provided to patients without significant side effects.

May protect good vision

It seems that nutrients with antioxidant functions, such as vitamin E are good for preventing or even treating age-related macular degeneration and cataracts.

According to studies, we may protect our good eyesight taking a daily dosage of 400 IU of vitamin E, along with beta-carotene , vitamin C , zinc , and copper !

You can see the list of foods high in beta-carotene, along with other foods high in other carotenoids here.

May delay the onset of Alzheimers disease or dementia

Vitamin E for elastic face & shiny face

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Upper Level Of Intake Vitamin C

It is not possible to establish a UL for vitamin C, but 1,000 mg/day is a prudent limit.

Rationale: It is not possible to establish with any certainty a UL for supplementary vitamin C, as data are too inconclusive. However, expert bodies have suggested that intakes of no more than 1,000 mg/day for adults would be prudent .

The UK Expert Group on Vitamins and Minerals has suggested a guidance level of 1,000 mg based on a LOAEL of 3,000-4,000 mg/day from the study of Cameron & Campbell , applying an UF of 3 to extrapolate to a NOAEL of 1,000 mg/day. The US Food and Nutrition Board used the same data but applied an UF of only 1.5 to give a NOAEL of 2,000 mg which it adopted as the Tolerable Upper Intake for adults ranging down to 400 mg in children aged 1-3 years.

Vitamin C can also enhance non-haem iron absorption and thus may increase iron-induced tissue damage in individuals with haemochromatosis . Haemochromatosis is a condition of glucose-6-phosphate dehydrogenase deficiency that occurs in about 1 in 300 people of northern European descent . However, the possibility of such adverse effects in this group has not been systematically examined.

Why Getting Vitamin C Through Your Diet Is Important

NutriFlair Pure Vitamin C Supplement 1000mg per Capsule ...

Vitamin C is an important nutrient for your body since it:

  • Acts as an antioxidant
  • Supports your immune system

In addition, vitamin C is thought to have beneficial effects on your overall health, including reducing your risk of cancer, heart disease and the most common causes of vision loss .

While vitamin C is an important nutrient, your body doesn’t actually make it so it’s important to make sure you’re getting enough vitamin C from your diet.

The amount you need depends on your age and gender, but, in general, adults should aim to get between 65 to 90 mg of vitamin C per day. You can get all the vitamin C you need by drinking a glass of orange juice or eating a cup of strawberries, bell pepper, broccoli, Brussels sprouts or kale. In addition, some of the herbs you commonly cook with also contain significant amounts of vitamin C, including thyme and parsley.

Another reason to get the recommended amount of vitamin C through your diet, rather than a supplement, is that healthy, whole foods also contain other beneficial vitamins, minerals, antioxidants and fiber.

Most people following a healthy diet have no problem getting the recommended amount of vitamin C every day. However, if you think you aren’t, you can always consider taking a multivitamin as most contain the recommended amount of vitamin C you need every day.

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