Phenoxymethyl 250 mg (Tablet)

Unit Price: ৳ 1.50 (100's pack: ৳ 150.00)

Medicine Details

Indications

  • Treatment of mild to moderately severe bacterial infections
  • Infections of ear, nose, and throat regions
  • Infections of lower respiratory tract
  • Infections due to beta-hemolytic streptococci
  • Skin infections
  • Lymphadenitis and lymphangitis
  • Prophylaxis of scarlet fever
  • Prevention of recurrences of rheumatic fever
  • Prophylaxis of infection after dental and oral surgical procedures
  • Combination with another appropriate antibiotic

Pharmacology

  • Phenoxymethyl penicillin is acid-stable
  • Best absorbed in potassium salt form
  • Convenient treatment of Gram-positive infections
  • Advantage over penicillin G in resistance to gastric acid inactivation

Dosage

  • Dosage should be determined based on sensitivity of causative micro-organism and severity of infection
  • Adult dosage: 250-500 mg 6 hourly
  • Children dosage: 125-250 mg 6 hourly
  • Best taken with an empty stomach

Administration

  • Best taken on an empty stomach
  • Tablets should be swallowed without chewing with sufficient liquid
  • Syrup bottle needs to be shaken vigorously before use

Interaction

  • Concurrent intake of food reduces absorption rate
  • Concomitant administration may increase levels of methotrexate
  • Diarrhoea may disturb absorption of other orally administered drugs
  • Concurrent use with bacteriostatic chemotherapeutics or antibiotics may attenuate or abolish activity of penicillins
  • Concurrent administration of probenecid inhibits renal excretion of penicillins

Contraindications

  • Hypersensitivity to penicillins or any excipients
  • Severe gastrointestinal disorders with vomiting and diarrhea

Side Effects

  • Hypersensitivity reactions involving the skin
  • Serious allergic reactions
  • Anaphylactic or anaphylactoid reactions
  • Skin rashes and inflammation of mucous membranes
  • Gastrointestinal disturbances
  • Diarrhoea as a symptom of enterocolitis
  • Changes in blood picture
  • Herxheimer's reaction
  • Transient discolouration of the teeth
  • Proliferation of resistant microorganisms

Pregnancy & Lactation

  • Crosses the placenta
  • May be used throughout pregnancy with appropriate indication
  • Passes into breast milk in small amounts
  • May be used during lactation with potential for diarrhoea and yeast colonization in infant

Precautions & Warnings

  • Consider possibility of cross-allergy between cephalosporins and penicillins
  • Consider potassium content in patients with heart diseases or serious electrolyte disturbances
  • Check patient's condition at regular intervals for proliferation of resistant micro-organisms
  • Consider sugar content in patients with diabetes mellitus
  • No indication of impaired ability to drive or operate machinery

Overdose Effects

  • Low toxicity with broad therapeutic range
  • Risk of encephalopathy in cases of administration of beta-lactam antibiotics
  • No special measures required other than discontinuation of medication
  • Elimination can be accomplished through haemodialysis

Therapeutic Class

  • Benzylpenicillin
  • Phenoxymethyl penicillin

Storage Conditions

  • Store in a cool and dry place
  • Protect from light

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