Peringatan Keamanan

Acute oral toxicity (LD50): 1901 mg/kg in rabbits MSDS and 3750 mg/kg in rats L1736.

The primary acute toxic effect of nitrates is the development of methemoglobinemia, a condition in which greater than 10% of the hemoglobin in the body is transformed into methemoglobin. When this conversion exceeds 70% the condition may result in death L1750.

The potassium ion by itself possesses very little toxicity; the toxicity of the salts is associated with the anion. Potassium nitrate is rapidly absorbed from the upper gastrointestinal tract and is excreted mostly as the unchanged drug L1736. This excludes a small percentage of the ingested dose that is reduced by the microbial action of the gut to nitrite. Nitrites convert the hemoglobin in red blood cells into methemoglobin L1736. In male rats given potassium nitrate, intestinal absorption was affected A32165.

Adverse increased potassium intake included changes in blood lipids, triglyceride, decreased high-density lipoprotein HDL cholesterol), changes in renal function, and increases in catecholamine levels. The decrease in blood volume caused by increased potassium activates the sympathetic nervous system, resulting in the release of adrenaline and noradrenaline. Decreases in blood volume may also contribute to the observed changes in blood lipid concentrations L1755.

Death and severe effects of nitrate ingestion are generally associated with doses of the drugs above 10g NO3-. Doses ranging from 2-9 g NO3- have been reported to cause methemoglobinemia. These values correspond to 33 - 150 mg NO3-/kg L1750
Potassium nitrate was shown to cause low to moderate acute toxicity. Repeated dose toxicity was investigated in rats given oral doses in the range 10-100 mg/kg per day for 4 months; bronchopneumonia, local hemorrhages, and other circulatory disorders were observed in treated animals. Cattle were given oral doses of 345-450 mg/kg daily (expressed as nitrate) for several months; blood phosphate and magnesium were decreased and blood calcium, urinary magnesium, urea and milk urea were increased L1736.

Potassium nitrate

DB11090

small molecule approved

Deskripsi

Potassium nitrate is an inorganic salt with a chemical formula of KNO3. It is a natural source of nitrate and has been used as a constituent for several different purposes, including food preservatives, fertilizers, tree stump removal, rocket propellants, and fireworks. Potassium nitrate is a common active ingredient in toothpaste, exerting an anti-sensitivity action. It provides increasing protection against painful sensitivity of the teeth to cold, heat, acids, sweets or contact L1754, L1755.

In addition, potassium nitrate is used as a diuretic in pigs, cattle, and horses. It is administered orally doses up to 30 g per animal per day L1736.

Struktur Molekul 2D

Berat 101.1032
Wujud solid

Peta Jejaring Molekuler
Legenda: ObatTargetGenEnzim(Panah → menunjukkan arah efek / relasi)TransporterCarrier

Profil Farmakokinetik

Waktu Paruh (Half-Life) -
Volume Distribusi Nitrates are absorbed into the general blood circulation and are transported across the body. Radioactive tracer experiments have demonstrated that nitrates are distributed evenly among body organs, and their rate of distribution depends on blood flow [L1754].
Klirens (Clearance) -

Absorpsi

It is established that nitrate is quickly and almost entirely absorbed from the proximal and small intestine subsequent to ingestion in most animals, with little if any absorption from the stomach and lower intestine L1754. The vast majority of intestinal K+ absorption occurs in the small intestine; the contribution of the normal colon to net K+ absorption and secretion is trivial A32174.

Metabolisme

Nitrates are reduced to nitrites by the bacteria in saliva and the gastrointestinal system L1754. The in vivo reduction of nitrates to nitrites depends on conditions that are subject to much variations such the volume and species of microflora present in the saliva/gastrointestinal tract, and stomach pH. Gastric pH is higher in infants younger than 6 months of age and during certain gastrointestinal tract infections, thereby favoring the reduction of nitrates L1754. Nitrate is metabolized to a small extent. The biotransformation of potassium nitrate consists of nitrate reduction, nitrite formation, nitrite reoxidation to nitrate, and formation of methemoglobin or NO, in a dynamic equilibrium L1752, L1753, L1754.

Rute Eliminasi

Nitrates are excreted in the urine primarily as inorganic nitrates L1754.

Interaksi Obat

869 Data
Ramipril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Ramipril.
Fosinopril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Fosinopril.
Trandolapril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Trandolapril.
Benazepril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Benazepril.
Enalapril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Enalapril.
Moexipril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Moexipril.
Lisinopril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Lisinopril.
Perindopril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Perindopril.
Quinapril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Quinapril.
Omapatrilat The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Omapatrilat.
Rescinnamine The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Rescinnamine.
Captopril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Captopril.
Cilazapril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Cilazapril.
Spirapril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Spirapril.
Temocapril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Temocapril.
Enalaprilat The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Enalaprilat.
Imidapril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Imidapril.
Zofenopril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Zofenopril.
Delapril The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Delapril.
Benazeprilat The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Benazeprilat.
Fosinoprilat The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Fosinoprilat.
Ramiprilat The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Ramiprilat.
Trandolaprilat The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Trandolaprilat.
Moexiprilat The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Moexiprilat.
Perindoprilat The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Perindoprilat.
Quinaprilat The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Quinaprilat.
Cilazaprilat The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Cilazaprilat.
Triamterene The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Triamterene.
Spironolactone The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Spironolactone.
Amiloride The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Amiloride.
Eplerenone The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Eplerenone.
Canrenoic acid The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Canrenoic acid.
Canrenone The risk or severity of hyperkalemia can be increased when Potassium nitrate is combined with Canrenone.
Cefotiam Cefotiam may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefmenoxime Cefmenoxime may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefmetazole Cefmetazole may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Pamidronic acid Pamidronic acid may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Tenofovir disoproxil Tenofovir disoproxil may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cidofovir Cidofovir may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefpiramide Cefpiramide may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Ceftazidime Ceftazidime may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Loracarbef Loracarbef may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefalotin Cefalotin may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefotaxime Cefotaxime may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Foscarnet Foscarnet may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Methotrexate Methotrexate may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cephalexin Cephalexin may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Valaciclovir Valaciclovir may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Bacitracin Bacitracin may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Amphotericin B Amphotericin B may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cephaloglycin Cephaloglycin may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Adefovir dipivoxil Adefovir dipivoxil may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Acyclovir Acyclovir may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefaclor Cefaclor may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Ceforanide Ceforanide may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Carboplatin Carboplatin may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefditoren Cefditoren may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Atazanavir Atazanavir may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Colistimethate Colistimethate may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefuroxime Cefuroxime may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefapirin Cefapirin may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefadroxil Cefadroxil may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefprozil Cefprozil may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Ceftriaxone Ceftriaxone may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefamandole Cefamandole may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefazolin Cefazolin may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefonicid Cefonicid may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefoperazone Cefoperazone may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefotetan Cefotetan may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefoxitin Cefoxitin may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Ceftizoxime Ceftizoxime may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefradine Cefradine may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefepime Cefepime may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefacetrile Cefacetrile may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Ceftibuten Ceftibuten may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefpodoxime Cefpodoxime may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Lopinavir Lopinavir may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Hydrolyzed Cephalothin Hydrolyzed Cephalothin may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cephalothin Group Cephalothin Group may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Latamoxef Latamoxef may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Ceftobiprole Ceftobiprole may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Ceftaroline fosamil Ceftaroline fosamil may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefaloridine Cefaloridine may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefminox Cefminox may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Tenofovir alafenamide The serum concentration of Tenofovir alafenamide can be increased when it is combined with Potassium nitrate.
Cefroxadine Cefroxadine may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Flomoxef Flomoxef may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefatrizine Cefatrizine may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefcapene Cefcapene may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefodizime Cefodizime may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefsulodin Cefsulodin may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefetamet Cefetamet may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefbuperazone Cefbuperazone may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefozopran Cefozopran may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefpirome Cefpirome may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Cefazedone Cefazedone may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Ceftezole Ceftezole may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Adefovir Adefovir may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Tenofovir Tenofovir may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.
Inotersen Inotersen may decrease the excretion rate of Potassium nitrate which could result in a higher serum level.

Target Protein

Voltage-gated inwardly rectifying potassium channel KCNH2 KCNH2

Referensi & Sumber

Synthesis reference: https://www.sciencedirect.com/topics/pharmacology-toxicology-and-pharmaceutical-science/potassium-nitrate
Artikel (PubMed)
  • PMID: 1659333
    Grudzinski I, Szymanski A: The effect of acute poisoning with potassium nitrate and sodium nitrite on the processes of intestinal absorption of D-xylose in rats. Arch Environ Contam Toxicol. 1991 Sep;21(3):453-61.
  • PMID: 23674806
    Weaver CM: Potassium and health. Adv Nutr. 2013 May 1;4(3):368S-77S. doi: 10.3945/an.112.003533.
  • PMID: 3159503
    Schultz DS, Deen WM, Karel SF, Wagner DA, Tannenbaum SR: Pharmacokinetics of nitrate in humans: role of gastrointestinal absorption and metabolism. Carcinogenesis. 1985 Jun;6(6):847-52.
  • PMID: 9536024
    Bychkov R, Gollasch M, Steinke T, Ried C, Luft FC, Haller H: Calcium-activated potassium channels and nitrate-induced vasodilation in human coronary arteries. J Pharmacol Exp Ther. 1998 Apr;285(1):293-8.
  • PMID: 8039632
    Agarwal R, Afzalpurkar R, Fordtran JS: Pathophysiology of potassium absorption and secretion by the human intestine. Gastroenterology. 1994 Aug;107(2):548-71.

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