Vitamin C

Vitamin C, or L-ascorbic acid, is a water-soluble vitamin. Humans, unlike most animals, lack the final enzyme in the pathway that makes vitamin C from glucose, so it has to come from the diet. The US Recommended Dietary Allowance is 90 mg a day for men and 75 mg for women.

Vitamin C is water-soluble and can be taken at any time. What matters more than timing is the size of each dose: at intakes of 30 to 180 mg a day the body absorbs roughly 70 % to 90 %, but above 1 g a day absorption falls below 50 %. Splitting the amount across the day is one approach some people take.

Acerola cherry is a natural source of Vitamin C that comes with bioflavonoids, while ascorbic acid is the pure form; both provide Vitamin C.

Vitamin C is water-soluble and excess is generally excreted, but very high intakes may cause stomach discomfort in some people; follow the amount on the label.

It is a common formulation on the market, and the thing worth checking is that each of the three carries its own ceiling. the annex to Thai FDA guidance on the use of key ingredients in dietary supplements lists quercetin at not more than 1 g per day at item 346 and total zinc at not more than 15 mg per day at item 223, for vitamin C the Thai FDA uses 1,000 mg a day as a condition on the raw material at item 191, acerola cherry, while the Tolerable Upper Intake Level set by the US Food and Nutrition Board is 2,000 mg a day for adults aged 19 and over. If you take a combined formula alongside other products, each one has to be totalled separately.

For Thailand, item 191 of the annex to Thai FDA guidance of 8 July 2024 states not more than 1,000 mg of total vitamin C per day as a condition on acerola cherry as a raw material. The Tolerable Upper Intake Level set by the US Food and Nutrition Board for adults aged 19 and over is 2,000 mg a day, counting food and supplements together. If you take more than one product containing vitamin C, add the amounts up first and follow what is printed on the labels.

A study comparing three sources found no difference in plasma vitamin C levels or urinary excretion between ascorbic acid, Ester-C and ascorbic acid with bioflavonoids, and its authors concluded that plain ascorbic acid is the sensible source once cost is considered. NIH ODS also states that the ascorbic acid used in supplements has bioavailability equivalent to the ascorbic acid occurring naturally in food.

Follow the directions on the product label or the advice of a healthcare professional. Taking more vitamin C does not necessarily provide additional benefits.

No. Simply continue with your usual serving as directed on the label. There is no need to double the amount.

Yes. Vitamin C can be taken daily when used according to the directions on the label. Be sure to consider the total amount of vitamin C you receive from other supplements as well.

Eating a variety of fruits and vegetables regularly can help support adequate vitamin C intake. The actual amount you receive depends on the types and quantities of foods consumed.

Vitamin C is an essential nutrient for all age groups. Older adults can obtain vitamin C from foods or dietary supplements as appropriate and should follow the directions on the label. It is also advisable to consult a doctor or pharmacist before use.

Children can obtain vitamin C from their regular diet. If a supplement is used, choose a product suitable for the child's age and follow the directions on the label. Consult a doctor or pharmacist before use.

Many fruits and vegetables are natural sources of vitamin C. Whether a supplement is needed depends on an individual's dietary habits and nutritional needs.

Vitamin C in dietary supplements may come from natural sources or be provided as ascorbic acid. Both provide vitamin C.

Dietary supplements may be an option for those who do not obtain enough nutrients from their diet. However, a balanced and varied diet remains important.

In general, yes. However, check the total amount of vitamin C from all products to avoid unnecessary duplication.

The main difference is the amount of vitamin C provided per serving. Consider your total intake from foods and other supplements and follow the directions on the label.

In general, vitamin C can be taken with coffee or tea. People with sensitive stomachs may prefer to take it with food or at a different time.

In general, people with high blood pressure can take vitamin C. However, they should follow the directions on the label and inform their doctor or pharmacist about any supplements they are using, especially if they have medical conditions or take prescription medicines.

People who take prescription medications or have underlying medical conditions should consult a doctor or pharmacist before starting any dietary supplement to determine whether it is appropriate for their individual needs.

Yes. Acerola cherry products generally do not contain meat ingredients. However, consumers should always check the ingredient list on the product label before use.

In general, they can be taken together. Follow the directions on each product label and take them with or after meals, as appropriate.

Yes. It can be taken daily when used according to the directions on the label. Consumers should also consider their total vitamin C intake from other dietary supplements.

In general, acerola cherry can be taken together with collagen. Follow the directions on the label of each product.

Pregnant or breastfeeding women should consult a doctor or pharmacist before using any dietary supplement.