Magnesia - instructions for use, reviews, analogs and forms of release (injections in ampoules for intramuscular and intravenous injections, powder for the preparation of a suspension) of a medicinal product for the treatment of pressure in adults, children and in pregnancy
In this article, you can read the instructions for using the drug Magnesia. Comments of visitors of the site - consumers of this medicine, as well as opinions of doctors of specialists on the use of Magnesia in their practice are presented. A big request is to actively add their feedback on the drug: the medicine helped or did not help get rid of the disease, which were observed complications and side effects, possibly not declared by the manufacturer in the annotation. Analogues of Magnesia in the presence of existing structural analogues.Use to treat constipation, reduce high blood pressure, carry out tjubazhi in adults, children, as well as during pregnancy and lactation.
Magnesia - ingestion has choleretic (reflex action on the receptors of the mucous membrane of the duodenum) and the laxative effect (due to the poor absorbability of the drug in the intestine it creates a high osmotic pressure, there is an accumulation of water in the intestine, the intestinal contents diluted, peristalsis is enhanced). It is an antidote for poisoning with salts of heavy metals. The onset of the effect is 0.5-3 hours, duration - 4-6 hours.
In parenteral administration, it has a hypotensive, sedative and anticonvulsive action, and diuretic, arteriodilatirtee, antiarrhythmic, vasodilating (on an artery) effect in high doses - kurarepodobnoe (inhibitory effect on neuromuscular transmission), tocolytic, hypnotic and narcotic effect, suppresses respiratory Centre. Magnesium is a physiological blocker of slow calcium channels and is able to displace it from binding sites.Regulates metabolic processes, interneuronal transmission and muscular excitability, prevents the entry of calcium through the presynaptic membrane, reduces the amount of acetylcholine in the peripheral nervous system and the central nervous system. Relaxes smooth muscles, reduces blood pressure (mostly increased), increases diuresis.
The mechanism of anticonvulsant action is associated with a decrease in the release of acetylcholine from neuromuscular synapses, while magnesium suppresses neuromuscular transmission, has a direct inhibitory effect on the central nervous system.
The antiarrhythmic effect of magnesium is due to a decrease in the excitability of cardiomyocytes, the restoration of ionic equilibrium, the stabilization of cell membranes, the violation of sodium current, a slow incoming calcium current and a unilateral potassium current. The cardioprotective effect is due to the expansion of the coronary arteries, the decrease in OPSS and platelet aggregation.
The tocolytic action develops as a result of inhibition of the contractile ability of the myometrium (decrease in absorption, binding and distribution of calcium in smooth muscle cells) under the influence of the magnesium ion, increasing blood flow in the uterus as a result of the expansion of its vessels.Magnesium is an antidote for poisoning with salts of heavy metals.
Systemic effects develop almost instantaneously after intravenous and 1 h after intramuscular injection. The duration of action with / in the introduction - 30 minutes, with / m - 3-4 hours.
Composition
Magnesium sulfate + auxiliary substances.
Pharmacokinetics
After ingestion, no more than 20% of the dose taken is absorbed. Penetrates through the blood-brain barrier (GEB) and the placental barrier, excreted in breast milk with a concentration that is 2 times higher than the concentration in the plasma. It is excreted by the kidneys, the rate of renal excretion is proportional to the concentration in the plasma and the level of glomerular filtration.
Indications
For oral administration:
- constipation;
- cholangitis;
- cholecystitis;
- dyskinesia of the gallbladder according to the hypotonic type (for carrying out tjubazhes);
- duodenal sounding (to get a vesicle of bile);
- Purification of the intestine before the diagnostic manipulation.
For parenteral administration:
- arterial hypertension (including hypertensive crisis with the phenomena of cerebral edema);
- the threat of premature delivery;
- convulsions with gestosis;
- hypomagnesemia (including increased need for magnesium and acute hypomagnesemia - tetany, impaired myocardial function);
- polymorphic ventricular tachycardia (of the "pirouette" type);
- eclampsia;
- encephalopathy;
- epileptic syndrome;
- retention of urine;
- poisoning with salts of heavy metals (mercury, arsenic, tetraethyl lead, barium).
Forms of release
Solution for intravenous and intramuscular injection (injections in ampoules for injection).
Powder for suspension for oral administration in cans of 20 g, 25 g, 40 g, 50 g.
Instructions for use and dosing regimen
Intramuscularly or intravenously. Magnesia is used only according to the doctor's prescription. Doses are refined taking into account the therapeutic effect and the concentration of magnesium sulfate in the blood serum.
For hypertensive crises, inject in / m or iv slowly, 5-20 ml of 25% solution. With convulsive syndrome, spastic conditions, the drug is given in / m 5-20 ml of a 25% solution in combination with anxiolytic drugs with a pronounced central miorelaxing effect.
In acute poisoning with mercury, arsenic, tetraethyl lead 5-10% solution of magnesium sulfate is injected iv in 5-10 ml.
Side effect
- bradycardia;
- diplopia;
- a sudden rush of blood to the face;
- headache;
- a decrease in blood pressure;
- nausea, vomiting;
- diarrhea;
- flatulence;
- thirst;
- dyspnea;
- blurred speech;
- weakness;
- decrease or loss of deep tendon reflexes;
- depression of the respiratory center;
- impaired conduction of the heart;
- heart failure;
- hyperhidrosis;
- anxiety;
- marked sedation;
- polyuria;
- atony of the uterus;
- violation of electrolyte balance (increased fatigue, asthenia, confused consciousness, arrhythmia, convulsions).
Contraindications
- chronic renal failure of a serious degree;
- increased sensitivity to magnesium sulfate;
- appendicitis;
- rectal bleeding (including undiagnosed);
- intestinal obstruction;
- dehydration;
- arterial hypotension;
- depression of the respiratory center;
- severe bradycardia;
- AV blockade;
- pre-natal period (2 hours before delivery).
Application in pregnancy and lactation
In pregnancy, Magnesia is used with caution, only in cases where the expected therapeutic effect exceeds the potential risk to the fetus.
If it is necessary to use lactation, breastfeeding should be discontinued.
special instructions
C with caution taken or administered parenterally with heart block, myocardial damage, chronic renal failure, respiratory diseases, acute inflammatory diseases of the digestive tract, pregnancy.
Magnesia can be used to relieve the status epilepticus (as part of complex treatment).
When an overdose causes CNS depression. As an antidote for an overdose of magnesium sulfate, calcium-calcium chloride or Calcium gluconate preparations are used.
Drug Interactions
With parenteral application of Magnesia and the simultaneous use of muscle relaxants of peripheral action, there is an intensification of the effects of muscle relaxants of peripheral action.
With the simultaneous ingestion of antibiotics from the Tetracycline group, the effect of tetracyclines may decrease due to a decrease in their absorption from the gastrointestinal tract.
A case of stopping breathing with the use of gentamycin in an infant with an elevated magnesium concentration in the blood plasma against the background of magnesium sulfate therapy is described.
At simultaneous application with Nifedipine the expressed muscular delicacy is possible.
Reduces the effectiveness of oral anticoagulants (including coumarin derivatives or derivatives of indanedione), cardiac glycosides, phenothiazines (especially chlorpromazine). Reduces the absorption of ciprofloxacin, etidronic acid, weakens the effects of streptomycin and tobramycin.
As an antidote for an overdose of Magnesia, calcium, calcium chloride or calcium gluconate preparations are used.
Pharmaceutically incompatible (precipitate forms) with preparations of Ca, ethanol (alcohol) (in high concentrations), carbonates, bicarbonates and phosphates of alkali metals, arsenic acid, barium, strontium, Clindamycin phosphate, Hydrocortisone sodium succinate, polymyxin In sulfate, procaine hydrochloride, salicylates and tartrates.
Analogues of medicinal product Magnesia
Structural analogs for the active substance:
- Kormagnezin;
- Magnesium sulfate;
- Magnesium sulfate Darnitsa;
- Magnesium sulfate solution for injection.
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