What laxative is better to use before starting fasting?

Preliminary cleansing of the gastrointestinal tract can greatly facilitate fasting, especially for beginners. The absence of food residues accelerates the body's switching to internal nutrition, reduces intoxication and other unpleasant symptoms of the first days of fasting.

Most authors for the purification of the intestine before starting fasting recommend the use of salt laxatives: magnesium sulfate / Epson salt /и sodium sulfate / Glauber's salt /, as well as sodium phosphate and sodium citrate.

Saline laxatives promote water retention in the intestines. As a result, its contents liquefy, peristalsis increases and feces are excreted faster. As a rule, the effect of taking a saline laxative occurs 4-6 hours after administration. In medicine, saline laxatives are used in cases of acute constipation, in preparation for surgery and medical and diagnostic procedures on the intestines, in acute food poisoning (saline laxatives delay the absorption of poison and its entry into the bloodstream). In addition, saline laxatives are prescribed after taking some antihelminthics to speed up their elimination and prevent toxic effects.

However, apart from magnesium sulphate to enter starvation you can use other laxatives. Best for these purposes are suitable products with a slight laxative effect, which cause a soft stool, a consistency close to normal and does not cause chemical irritation of the gastrointestinal tract. Such properties are possessed by sea kale, agar-agar, sulfur purified, and also vaseline oil. In addition, some fruits (apples, grapes, prunes, etc.) provide a laxative effect.

In addition, to cleanse the gastrointestinal tract at the entrance to fasting with success, you can use mineral water: Morshin, Slavic, etc. They act like a salt laxative, since their composition contains a large amount of magnesium sulfate or sodium sulfate.

But more powerful laxatives, as well as laxatives, whose action is based on chemical irritation of the gastrointestinal tract is better not to use.

Recommended laxatives for entry into starvation:

Magnesium sulfate. / Sulfuric acid, Epson salt /, sodium sulfate / Glauber's salt /

Product form:Salt laxatives are produced in the following form: magnesium sulfate powder oral. pack. 25 g

Mode of application:As a laxative - inside (at night or on an empty stomach): adults - 10-30 g in 0,5 glass of water; children - at the rate of 1 g for 1 year of life.

Act: Emptying of the intestine occurs in 4-6 hours after saline application is laxative.

Contraindications: as in all medical preparations, magnesium sulfate has contraindications: hypersensitivity to the drug, hypermagnesia, intestinal obstruction, acute inflammatory diseases of the gastrointestinal tract, pregnancy, menstruation.

With caution should be used for acute hemorrhoids, anal channel cracks, inflammatory changes and ulcerative lesions of the lower gastrointestinal tract. Despite the fact that sodium and magnesium from salt laxatives are absorbed only in small volumes, this fact should be taken into account for patients with disorders of kidney function or heart failure.


Obtained from the mineral water source of the resort Morshin (Ukraine).

Contains sodium sulfate, in a small amount - magnesium and calcium sulfates, calcium carbonate, sodium chloride.

Pharmachologic effect. Saline purgative.

Indications for use. Applied as a laxative, as well as in diseases of the liver, intestines, metabolic disorders.

Method of administration and dose. Assign inside the 1-2 teaspoons to 1 / 2 a glass of water for 30 min before meals.

Contraindications. Same as for sodium sulfate. 

Vaseline oil (0leum vaselini). Synonym: Liquid paraffin (Paraffinum liquidum). Refined oil fraction obtained after distillation of kerosene. Colorless oily liquid, odorless and tasteless. Practically insoluble in water and alcohol. Mixes up with vegetable oils (except castor oil). Density 0,875 - 0,890. Medical vaseline oil is a highly refined oil that does not contain harmful organic compounds. Medical vaseline oil does not have a negative effect on vital organs, does not have embryotoxic mutagenic and carcinogenic effects, as well as cumulation, i.e. the ability to accumulate in the human body and is completely removed from it. When taken orally, it is not absorbed and softens the feces.

Assign for chronic constipation inside by 1 - 2 tablespoons a day. Long-term use of vaseline oil can disrupt the digestive process. It should be borne in mind that when ingested oil vaseline can pass through the anal sphincter and contaminate the laundry. Therefore, viscous emulsions are more convenient. 

SEA CABBAGE (Laminaria saccharina) is taken orally 1 / 2-1 teaspoon once a day. Product form: powder in boxes of 1 g. Seaweed, as well as agar-agar and tragacania, have a laxative effect due to the fact that, swelling in the intestine, they increase the volume of the chyme and, as a result, cause mechanical irritation of the intestinal wall receptors.

Polyhydric alcohols (sorbitol, xylitol and mannitol) also have a laxative effect, which is due to the fact that when ingested they are slowly absorbed and, due to their osmotic activity, they disrupt the absorption of water and thereby increase the volume of intestinal contents and, as a result, enhance its peristalsis.

See also: types of laxatives

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