Calcium carbonate Actions

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Actions of Calcium carbonate in details

The action of the drug on the human body is called Pharmacodynamics in Medical terminology. To produce its effect and to change the pathological process that is happening the body and to reduce the symptom or cure the disease, the medicine has to function in a specific way. The changes it does to the body at cellular level gives the desired result of treating a disease. Drugs act by stimulating or inhibiting a receptor or an enzyme or a protein most of the times. Medications are produced in such a way that the ingredients target the specific site and bring about chemical changes in the body that can stop or reverse the chemical reaction which is causing the disease.

Calcium carbonate is a basic inorganic salt that acts by neutralizing hydrochloric acid in gastric secretions. It also inhibits the action of pepsin by increasing the pH and via adsorption. Cytoprotective effects may occur through increases in bicarbonate ion (HCO3-) and prostaglandins. Neutralization of hydrochloric acid results in the formation of calcium chloride, carbon dioxide and water. Approximately 90% of calcium chloride is converted to insoluble calcium salts (e.g. Calcium carbonate and calcium phosphate).

How should I take Calcium carbonate?

Take Calcium carbonate exactly as directed by your doctor or follow the directions on the package. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.

Swallow the Calcium carbonate tablets and capsules with a full glass of water.

Chew the chewable forms of Calcium carbonate completely before swallowing.

Use the Calcium carbonate powder as directed. Allow the powder to dissolve completely, then consume the mixture.

Shake the Calcium carbonate suspension well before measuring a dose. To ensure that you get the correct dose, use a dose-measuring spoon or cup, not a regular table spoon to measure the liquid. If you do not have a dose-measuring device, ask your pharmacist where you can get one.

Take calcium with meals to increase its absorption by the body, unless otherwise directed by your doctor.

Store Calcium carbonate at room temperature away from moisture and heat.

Calcium carbonate administration

Administration of drug is important to know because the drug absorption and action varies depending on the route and time of administration of the drug. A medicine is prescribed before meals or after meals or along with meals. The specific timing of the drug intake about food is to increase its absorption and thus its efficacy. Few work well when taken in empty stomach and few medications need to be taken 1 or 2 hrs after the meal. A drug can be in the form of a tablet, a capsule which is the oral route of administration and the same can be in IV form which is used in specific cases. Other forms of drug administration can be a suppository in anal route or an inhalation route.

Oral: Administer with food. Doses >600 mg (

elemental calcium) per day should be divided for optimal absorption (AACE [Camacho 2016]).

Capsules may be swallowed whole or opened and the contents mixed with food or drink.

Calcium carbonate pharmacology

Pharmacokinetics of a drug can be defined as what body does to the drug after it is taken. The therapeutic result of the medicine depends upon the Pharmacokinetics of the drug. It deals with the time taken for the drug to be absorbed, metabolized, the process and chemical reactions involved in metabolism and about the excretion of the drug. All these factors are essential to deciding on the efficacy of the drug. Based on these pharmacokinetic principles, the ingredients, the Pharmaceutical company decides dose and route of administration. The concentration of the drug at the site of action which is proportional to therapeutic result inside the body depends on various pharmacokinetic reactions that occur in the body.

Gastric-peptic disease occurs as a result of an imbalance between protective factors, such as mucus, bicarbonate, and prostaglandin secretion, and aggressive factors, such as hydrochloric acid, pepsin, and Helicobacter pylori (H. pylori). Antacids work by restoring acid-base balance, attenuating the pepsin activity and increasing bicarbonate and prostaglandin secretion. The acid-neutralizing capacity of Calcium carbonate is 58 mEq/15 ml. When used as a nutritional supplement, Calcium carbonate acts by directly increasing calcium stores within the body.


  1. DailyMed. "CALCIUM CARBONATE; FAMOTIDINE; MAGNESIUM HYDROXIDE: DailyMed provides trustworthy information about marketed drugs in the United States. DailyMed is the official provider of FDA label information (package inserts).". (accessed September 17, 2018).
  2. DailyMed. "CALCIUM: DailyMed provides trustworthy information about marketed drugs in the United States. DailyMed is the official provider of FDA label information (package inserts).". (accessed September 17, 2018).
  3. NCIt. "Calcium Carbonate: NCI Thesaurus (NCIt) provides reference terminology for many systems. It covers vocabulary for clinical care, translational and basic research, and public information and administrative activities.". (accessed September 17, 2018).


The results of a survey conducted on for Calcium carbonate are given in detail below. The results of the survey conducted are based on the impressions and views of the website users and consumers taking Calcium carbonate. We implore you to kindly base your medical condition or therapeutic choices on the result or test conducted by a physician or licensed medical practitioners.

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Information checked by Dr. Sachin Kumar, MD Pharmacology

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