people who are not often exposed to the sun – such as people who are frail or housebound, are in an institution such as a care home, or usually wear clothes that cover most of their skin when outdoors should take a daily supplement containing 10 micrograms of vitamin D

CaCO 3 + 2 HCl ⟶ CaCl 2 + H 2 O + CO 2 ↑ {\displaystyle {\ce {CaCO3 + 2 HCl -> CaCl2 + H2O + CO2 ( Effervescent vitamin supplements or effervescent painkillers can contain up to 1g of salt per tablet. Consider changing to a non-effervescent tablet, particularly if you have been advised to reduce your salt intake.For the sociological concept, see Collective effervescence. For the racehorse, see Effervescing (horse). For other uses of "fizz", see Fizz (disambiguation). Bubbles of carbon dioxide float to the surface of a carbonated soft drink.

Some groups of the population are at greater risk of not getting enough vitamin D and are advised to take a supplement every day of the year.Children aged 6 months to 5 years should take vitamin supplements containing vitamins A, C and D every day. Vitamins and minerals, such as iron, calcium and vitamin C, are essential nutrients that your body needs in small amounts to work properly. Because it's difficult for people to get enough vitamin D from food alone, everyone (including pregnant and breastfeeding women) should consider taking a daily supplement containing 10 micrograms of vitamin D during the autumn and winter. However, during the autumn and winter, you need to get vitamin D from your diet because the sun is not strong enough for your body to make vitamin D. Effervescence can also be observed when opening a bottle of champagne, beer or carbonated beverages such as some carbonated soft drinks. The visible bubbles are produced by the escape from solution of the dissolved gas (which itself is not visible while dissolved in the liquid).

babies having 500mls (about a pint) or more of formula a day should not be given a vitamin D supplement, because infant formula is fortified with vitamin D and other nutrients

Many people choose to take supplements but taking too much or taking them for too long could be harmful. The Department of Health and Social Care recommends certain supplements for some groups of people who are at risk of deficiency. Folic acid supplement in pregnancy breastfed babies should be given a daily supplement containing 8.5 to 10 micrograms of vitamin D from birth, even if the mother is taking a supplement containing vitamin D herself

From around late March or early April until the end of September, most people can get all the vitamin D they need through sunlight on their skin and from eating a balanced diet. Most people do not need to take vitamin supplements and can get all the vitamins and minerals they need by eating a healthy, balanced diet.A GP may also recommend supplements if you need them for a medical condition. For example, you may be prescribed iron supplements to treat iron deficiency anaemia. Fizzy (effervescent) tablets: salt advice