magnesium¿¡ ´ëÇÑ Mechanism_Of_Action Á¤º¸ Not Available Magnesium¿¡ ´ëÇÑ Mechanism_Of_Action Á¤º¸ Not Available Ranitidine¿¡ ´ëÇÑ Mechanism_Of_Action Á¤º¸ The H2 antagonists are competitive inhibitors of histamine at the parietal cell H2 receptor. They suppress the normal secretion of acid by parietal cells and the meal-stimulated secretion of acid. They accomplish this by two mechanisms: histamine released by ECL cells in the stomach is blocked from binding on parietal cell H2 receptors which stimulate acid secretion, and other substances that promote acid secretion (such as gastrin and acetylcholine) have a reduced effect on parietal cells when the H2 receptors are blocked.
Pharmacology
Ranitidine¿¡ ´ëÇÑ Pharmacology Á¤º¸ Ranitidine is a histamine H2-receptor antagonist similar to cimetidine and famotidine. An H2-receptor antagonist, often shortened to H2 antagonist, is a drug used to block the action of histamine on parietal cells in the stomach, decreasing acid production by these cells. These drugs are used in the treatment of dyspepsia, however their use has waned since the advent of the more effective proton pump inhibitors. Like the H1-antihistamines, the H2 antagonists are inverse agonists rather than true receptor antagonists.
Ranitidine¿¡ ´ëÇÑ Biotransformation Á¤º¸ Hepatic. Ranitidine is metabolized to the N-oxide, S-oxide, and N-desmethyl metabolites, accounting for approximately 4%, 1%, and 1% of the dose, respectively.
Toxicity
Ranitidine¿¡ ´ëÇÑ Toxicity Á¤º¸ LD50=77mg/kg (orally in mice). Symptoms of overdose include muscular tremors, vomiting, and rapid respiration.
Drug Interactions
magnesium¿¡ ´ëÇÑ Drug_Interactions Á¤º¸ Alendronate Formation of non-absorbable complexesCiprofloxacin Formation of non-absorbable complexesClodronate Formation of non-absorbable complexesDemeclocycline Formation of non-absorbable complexesDoxycycline Formation of non-absorbable complexesEnoxacin Formation of non-absorbable complexesEtidronic acid Formation of non-absorbable complexesGatifloxacin Formation of non-absorbable complexesGemifloxacin Formation of non-absorbable complexesGrepafloxacin Formation of non-absorbable complexesIbandronate Formation of non-absorbable complexesLevofloxacin Formation of non-absorbable complexesLomefloxacin Formation of non-absorbable complexesMethacycline Formation of non-absorbable complexesMinocycline Formation of non-absorbable complexesMoxifloxacin Formation of non-absorbable complexesNorfloxacin Formation of non-absorbable complexesOfloxacin Formation of non-absorbable complexesOxytetracycline Formation of non-absorbable complexesPefloxacin Formation of non-absorbable complexesRisedronate Formation of non-absorbable complexesTrovafloxacin Formation of non-absorbable complexesTetracycline Formation of non-absorbable complexesTemafloxacin Formation of non-absorbable complexesAmprenavir The antiacid decreases the absorption of amprenavirChloroquine The antiacid decreases the absorption of chloroquineAtazanavir This gastric pH modifier decreases the levels/effects of atazanavirDelavirdine The antiacid decreases the absorption of delavirdineDihydroquinidine barbiturate The antiacid decreases the absorption of quinidineFosamprenavir The antiacid decreases the absorption of amprenavirIndinavir The antiacid decreases the absorption of indinavirQuinidine The antiacid decreases the absorption of quindineQuinidine barbiturate The antiacid decreases the absorption of quinidinePolystyrene sulfonate Risk of alkalosis in renal impairmentRosuvastatin The antiacid decreases the absorption of rosuvastatin Magnesium¿¡ ´ëÇÑ Drug_Interactions Á¤º¸ Alendronate Formation of non-absorbable complexesCiprofloxacin Formation of non-absorbable complexesClodronate Formation of non-absorbable complexesDemeclocycline Formation of non-absorbable complexesDoxycycline Formation of non-absorbable complexesEnoxacin Formation of non-absorbable complexesEtidronic acid Formation of non-absorbable complexesGatifloxacin Formation of non-absorbable complexesGemifloxacin Formation of non-absorbable complexesGrepafloxacin Formation of non-absorbable complexesIbandronate Formation of non-absorbable complexesLevofloxacin Formation of non-absorbable complexesLomefloxacin Formation of non-absorbable complexesMethacycline Formation of non-absorbable complexesMinocycline Formation of non-absorbable complexesMoxifloxacin Formation of non-absorbable complexesNorfloxacin Formation of non-absorbable complexesOfloxacin Formation of non-absorbable complexesOxytetracycline Formation of non-absorbable complexesPefloxacin Formation of non-absorbable complexesRisedronate Formation of non-absorbable complexesTrovafloxacin Formation of non-absorbable complexesTetracycline Formation of non-absorbable complexesTemafloxacin Formation of non-absorbable complexesAmprenavir The antiacid decreases the absorption of amprenavirChloroquine The antiacid decreases the absorption of chloroquineAtazanavir This gastric pH modifier decreases the levels/effects of atazanavirDelavirdine The antiacid decreases the absorption of delavirdineDihydroquinidine barbiturate The antiacid decreases the absorption of quinidineFosamprenavir The antiacid decreases the absorption of amprenavirIndinavir The antiacid decreases the absorption of indinavirQuinidine The antiacid decreases the absorption of quindineQuinidine barbiturate The antiacid decreases the absorption of quinidinePolystyrene sulfonate Risk of alkalosis in renal impairmentRosuvastatin The antiacid decreases the absorption of rosuvastatin Ranitidine¿¡ ´ëÇÑ Drug_Interactions Á¤º¸ Anisindione The anti-H2 increases the anticoagulant effectDicumarol The anti-H2 increases the anticoagulant effectAcenocoumarol The anti-H2 increases the anticoagulant effectWarfarin The anti-H2 increases the anticoagulant effectItraconazole The anti-H2 decreases the absorption of the imidazoleKetoconazole The anti-H2 decreases the absorption of the imidazoleProcainamide The histamine H2-receptor antagonist increases the effect of procainamideDasatinib Possible decreased levels of dasatinibAtazanavir This gastric pH modifier decreases the levels/effects of atazanaivrTolazoline Anticipated loss of efficacy of tolazoline
Ranitidine¿¡ ´ëÇÑ Food Interaction Á¤º¸ Avoid alcohol.Avoid milk, calcium containing dairy products, iron, antacids, or aluminum salts 2 hours before or 6 hours after using antacids while on this medication.Avoid excessive quantities of coffee or tea (Caffeine).Take without regard to meals.
magnesium¿¡ ´ëÇÑ Description Á¤º¸ Magnesium hydroxide is used primarily in "Milk of Magnesia", a white aqueous, mildly alkaline suspension of magnesium hydroxide formulated at about 8%w/v. Milk of magnesia is primarily used to alleviate constipation, but can also be used to relieve indigestion and heartburn. When taken internally by mouth as a laxative, the osmotic force of the magnesia suspension acts to draw fluids from the body and to retain those already within the lumen of the intestine, serving to distend the bowel, thus stimulating nerves within the colon wall, inducing peristalsis and resulting in evacuation of colonic contents. Magnesium¿¡ ´ëÇÑ Description Á¤º¸ Magnesium hydroxide is used primarily in "Milk of Magnesia", a white aqueous, mildly alkaline suspension of magnesium hydroxide formulated at about 8%w/v. Milk of magnesia is primarily used to alleviate constipation, but can also be used to relieve indigestion and heartburn. When taken internally by mouth as a laxative, the osmotic force of the magnesia suspension acts to draw fluids from the body and to retain those already within the lumen of the intestine, serving to distend the bowel, thus stimulating nerves within the colon wall, inducing peristalsis and resulting in evacuation of colonic contents. Ranitidine¿¡ ´ëÇÑ Description Á¤º¸ A non-imidazole blocker of those histamine receptors that mediate gastric secretion (H2 receptors). It is used to treat gastrointestinal ulcers. [PubChem]
Drug Category
magnesium¿¡ ´ëÇÑ Drug_Category Á¤º¸ Not Available Magnesium¿¡ ´ëÇÑ Drug_Category Á¤º¸ Not Available Ranitidine¿¡ ´ëÇÑ Drug_Category Á¤º¸ Anti-Ulcer AgentsHistamine H2 Antagonists