Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that is not stored in the body for long. It is well-known for its immune-boosting properties and is often the go-to supplement when one has a cold. When taken in supplement form at high doses, vitamin C can have a laxative effect, increasing gastric motility and speeding up the digestive process. This effect is considered a beneficial side effect for those suffering from constipation. However, it is important to note that excessive vitamin C intake can lead to diarrhea, nausea, and stomach cramps, and may cause an increase in iron absorption from food. Similar to vitamin C, magnesium, found in supplements and foods like pumpkin seeds and dark leafy greens, can also act as a laxative at concentrated doses.
What You'll Learn
Vitamin C increases gastric motility
Vitamin C is a well-known vitamin, often the first supplement people turn to when they have a cold. It is also a powerful antioxidant, helping to repair the harmful effects of toxins and time.
Vitamin C has a laxative effect, which is a side effect of its ability to increase gastric motility. In other words, it speeds up the digestive process. This is why some people use vitamin C to relieve constipation. However, this is not without its risks, and it is important to note that vitamin C should not be used to self-treat constipation.
When taken as a supplement at high doses, vitamin C can cause diarrhoea. This is because it increases gastric motility, pushing food through the digestive system more quickly. This is why vitamin C is often dosed "to bowel tolerance", meaning that the dose should be reduced if diarrhoea occurs.
The laxative effect of vitamin C can be useful for treating constipation. In this case, a higher dose than usual would be chosen to increase the frequency of bowel movements. Once the constipation has eased, the dose can be lowered again.
It is important to be aware that vitamin C supplements can have this effect, especially if you are taking multiple supplements or vitamins, as the dose can quickly add up. For example, some immune support supplements can contain around 1,000 milligrams of vitamin C per serving, which is about 17 times the recommended daily intake. Taking more than one of these supplements a day could lead to diarrhoea.
Vitamin C is considered a safe supplement for most people, but it is always best to consult a doctor before taking any new supplement, especially if you are pregnant or trying to conceive.
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Vitamin C flushes can help identify your daily vitamin C requirement
A vitamin C flush, also known as an ascorbate cleanse, is a safe and effective way to identify your daily vitamin C requirement. Vitamin C, or ascorbic acid, is an essential nutrient for humans, and while it is primarily obtained through dietary sources such as fruits and vegetables, our bodies do not store it for long. Therefore, it is crucial to replenish vitamin C daily.
The vitamin C flush involves introducing increments of buffered vitamin C over a few hours and recording the total amount consumed. This process continues until the body's vitamin C receptors reach saturation, indicated by a flushing of the bowels and the release of watery, loose stools. By performing this flush, individuals can determine their ideal daily vitamin C dosage, personalising their intake to optimise their health.
The recommended dietary allowance (RDA) of vitamin C for adult women is 75 mg, and 90 mg for men. However, these amounts may be outdated, and vitamin C requirements can vary depending on individual factors such as stress, illness, and overall health. A vitamin C flush is a useful tool to determine your unique vitamin C tolerance.
To perform a vitamin C flush, follow these steps:
- Choose a day when you have no plans, as you will need to stay near a toilet.
- Start on an empty stomach, preferably in the morning.
- Dissolve 2,000 mg of powdered vitamin C into a glass of water and record the time and amount consumed.
- Every twenty minutes, take another 2,000 mg dose, dissolved in water, and continue recording.
- Continue this process until you experience the release of loose stools. The time to reach saturation will vary, but most people achieve flushing within 2-3 hours.
- Record the total amount of vitamin C consumed.
- Calculate your optimal daily dose by multiplying the total amount ingested during the flush by 0.75. For example, if you consumed 10g during the flush, your ideal daily dose would be approximately 7.5g.
It is important to note that vitamin C supplementation should be discontinued gradually to prevent rebound deficiency. Additionally, always consult your doctor before performing a vitamin C flush, especially if you are pregnant, have a sensitive stomach, or have certain medical conditions.
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Vitamin C is a safe supplement for most people
The recommended daily intake of vitamin C for adults aged 19 to 64 is 40mg, which can be easily obtained through a balanced diet rich in fruits and vegetables. Citrus fruits, green peppers, strawberries, tomatoes, broccoli, and potatoes are excellent sources of vitamin C. While vitamin C deficiency is rare, it can occur in malnourished adults and lead to health issues such as scurvy.
When taken in high doses as a supplement, vitamin C can have a laxative effect. This is due to its ability to increase gastric motility, speeding up the digestive process. However, this side effect is usually viewed negatively, and the vitamin is typically dosed "to bowel tolerance," meaning that individuals should reduce their dosage if they experience diarrhoea. For pregnant women, it is recommended not to exceed a daily intake of 6,000mg of vitamin C, as higher levels may interfere with pregnancy.
The tolerable upper intake level of vitamin C for adults is generally considered to be 2,000mg per day. Consuming more than this amount may lead to stomach irritation, diarrhoea, and, in some cases, the formation of kidney stones. Therefore, it is always advisable to consult a doctor before taking any supplements, including vitamin C, to ensure safe and appropriate dosage.
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Vitamin C can be used to treat constipation
Vitamin C is a well-known vitamin with a variety of health benefits, including boosting the immune system and acting as a powerful antioxidant in the body. Interestingly, it can also be used to relieve constipation due to its laxative effect. This occurs because vitamin C increases gastric motility, which speeds up the digestive process.
How Vitamin C Helps with Constipation
Vitamin C has a laxative effect when taken in high doses, and this can be beneficial for those suffering from constipation. The recommended daily allowance of vitamin C for adults is 75-90mg, but therapeutic doses can range from 450-6000mg. When taking vitamin C for constipation, the dose is chosen to increase the frequency of bowel movements and may exceed bowel tolerance, which is the amount of vitamin C your body can tolerate before causing diarrhoea. Once constipation has eased, the vitamin C dose can be lowered.
How to Use Vitamin C for Constipation
To use vitamin C for treating constipation, it is recommended to take a buffered vitamin C powder that is fully reduced and 100% L-Ascorbate. The buffering agents should include essential minerals such as potassium, magnesium, calcium, and zinc. Start with 2000mg of vitamin C on an empty stomach, and then continue taking 2000mg every 20 minutes until you experience loose stools. Record the total amount of vitamin C consumed and the time it takes to reach bowel evacuation.
Calculating Your Daily Vitamin C Requirement
After performing the vitamin C flush, you can calculate your ideal daily dose by taking 75% of the total amount of vitamin C ingested. For example, if you consumed 10g during the flush, your ideal daily dose would be around 7.5g. You can spread this dose throughout the day, and it can be taken with or without food.
Adjusting Your Vitamin C Dosage Over Time
As your body's physiology improves, you may need to adjust your vitamin C dosage. If you experience mild abdominal cramping or loose stools, reduce the daily dose slightly. Over time, you may need to perform another vitamin C flush to calibrate your dosing requirements.
Precautions
While vitamin C is considered safe for most people, there are a few precautions to keep in mind. Constipation can be a sign of a serious illness, so it is important to consult a doctor before treating constipation with vitamin C or any other method. Additionally, if you are pregnant or could become pregnant, it is recommended to not exceed a vitamin C dose of 6000mg per day, as higher levels may interfere with pregnancy. Finally, some people may develop kidney stones when taking high doses of vitamin C, so it is important to consult your doctor before taking any supplements.
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High doses of vitamin C can cause diarrhoea
The recommended daily allowance of vitamin C for most adults is 75 to 90 mg. However, some sources recommend a higher daily intake of 45 mg/day for healthy adults. Taking more than 2,000 mg of vitamin C per day can lead to a tolerable upper intake level and cause diarrhoea.
A vitamin C flush, or ascorbate cleanse, is a method of introducing high amounts of vitamin C into the body to help rid it of toxins. This process involves taking incremental doses of vitamin C over a few hours until the body's vitamin C receptors reach saturation, resulting in watery stools. While this method can help determine an individual's daily vitamin C requirement, it can also lead to diarrhoea if not properly managed.
It is important to note that consuming large doses of vitamin C and then abruptly stopping can cause severe complications, including severe dehydration. Therefore, it is recommended to consult a doctor before performing a vitamin C flush or taking high doses of vitamin C supplements.
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Frequently asked questions
A vitamin C flush, or ascorbate cleanse, is when you introduce high amounts of vitamin C into your diet at regular intervals until you produce watery stools.
The recommended daily intake of vitamin C for healthy adults is 45 mg/day, according to the World Health Organization. The US National Academy of Sciences recommends 75 mg for women and 90 mg for men.
The upper limit of vitamin C intake for most adults is 2,000 milligrams (mg). Going above this amount may result in a laxative effect.
Taking too much vitamin C can cause diarrhea, nausea, and stomach cramps. It can also lead to an excess of iron absorption from food, which can worsen constipation.
Some other natural laxatives similar to vitamin C include magnesium supplements, sugarless candy and gum (containing sorbitol, mannitol, maltitol, or xylitol), and decaf coffee.