Longum - General Information

Long-acting plasma-bound sulfonamide used for respiratory and urinary tract infections and also for malaria. [PubChem]


Pharmacology of Longum

Longum is a sulfonamide antibiotic. The sulfonamides are synthetic bacteriostatic antibiotics with a wide spectrum against most gram-positive and many gram-negative organisms. However, many strains of an individual species may be resistant. Sulfonamides inhibit multiplication of bacteria by acting as competitive inhibitors of p-aminobenzoic acid in the folic acid metabolism cycle. Bacterial sensitivity is the same for the various sulfonamides, and resistance to one sulfonamide indicates resistance to all. Most sulfonamides are readily absorbed orally. However, parenteral administration is difficult, since the soluble sulfonamide salts are highly alkaline and irritating to the tissues. The sulfonamides are widely distributed throughout all tissues. High levels are achieved in pleural, peritoneal, synovial, and ocular fluids. Although these drugs are no longer used to treat meningitis, CSF levels are high in meningeal infections. Their antibacterial action is inhibited by pus.


Longum for patients

Patient Information:

Discuss with your doctor about the risks of taking Sulfametopyrazine. Make sure you let the doctor know
if you are pregnant, breast feeding, or you have liver, renal problems or any other medical conditions.


Longum Interactions

Drug Interactions:

Sulfametopyrazine increases the effects of the some drugs, including:

Sulfametopyrazine decreases the effects of the follwing drugs:


Longum Contraindications

Sulfametopyrazine is contraindicated in patients who are allergic to Sulfonamide, or have adverse
reactions to cotrimoxazole or sulphonamides. It is also contraindicated in the following medical
Disorders of porphyrin metabolism
Glucose-6-phosphate dehydrogenase deficiency anaemia
Sulphonamide poisoning


Additional information about Longum

Longum Indication: For the treatment of urinary tract infection and chronic bronchitis.
Mechanism Of Action: Longum is a competitive inhibitor of bacterial para-aminobenzoic acid (PABA), a substrate of the enzyme dihydropteroate synthetase. The inhibited reaction is necessary in these organisms for the synthesis of folic acid.
Drug Interactions: Not Available
Food Interactions: Not Available
Generic Name: Sulfametopyrazine
Synonyms: Not Available
Drug Category: Antimalarials; Anti-Infectives; Anti-Infective Agents, Urinary
Drug Type: Small Molecule; Approved; Withdrawn

Other Brand Names containing Sulfametopyrazine: Dalysep; Farmitalia 204/122; Kelfizin; Kelfizina; Kelfizine; Kelfizine W; Longum; Polycidal; SMP; SMP2; Solfametopirazina [Dcit]; Sulfalen; Sulfalene; Sulfalene [Usan-Inn]; Sulfaleno [Inn-Spanish]; Sulfalenum [Inn-Latin]; Sulfamethopyrazine; Sulfamethoxypyrazine; Sulfamethoxysuccinate; Sulfametoxypyridazin; Sulfapyrazinemethoxine; Sulfapyrazinemethoxyine; Sulfapyrazinemethoxyne;
Absorption: Not Available
Toxicity (Overdose): Not Available
Protein Binding: Not Available
Biotransformation: Not Available
Half Life: Not Available
Dosage Forms of Longum: Not Available
Chemical IUPAC Name: 4-amino-N-(3-methoxypyrazin-2-yl)benzenesulfonamide
Chemical Formula: C11H12N4O3S
Sulfametopyrazine on Wikipedia: Not Available
Organisms Affected: Gram negative, positive bacteria and plasmodium