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Buy Brevital Sodium 500mg Online

Buy Brevital Sodium 500mg Online, BREVITAL® (methohexital sodium, USP) for injection, is 2,4,6 (1H, 3H, 5H)-Pyrimidinetrione, 1-methyl-5-(1-methyl-2-pentynyl)-5-(2-propenyl)-, (±)-, monosodium salt and has the empirical formula C14H17N2NaO3. Its molecular weight is 284.29.

The structural formula is as follows:

 

BREVITAL® (methohexital sodium) Structural Formula Illustration

Methohexital sodium is a rapid, ultrashort-acting barbiturate anesthetic. Methohexital sodium for injection is a freeze-dried, sterile, nonpyrogenic mixture of methohexital sodium with 6% anhydrous sodium carbonate added as a buffer. It contains not less than 90% and not more than 110% of the labeled amount of methohexital sodium. It occurs as a white, freeze-dried plug that is freely soluble in water.

This product is oxygen sensitive. The pH of the 1% solution is between 10 and 11; the pH of the 0.2% solution in 5% dextrose is between 9.5 and 10.5.

Methohexital sodium may be administered by direct intravenous injection or continuous intravenous drip, intramuscular or rectal routes (see PRECAUTIONS – Pediatric Use). Reconstituting instructions vary depending on the route of administration

DOSAGE AND ADMINISTRATION

Facilities for assisting ventilation and administering oxygen are necessary adjuncts for all routes of administration of anesthesia. Since cardiorespiratory arrest may occur, patients should be observed carefully during and after use of BREVITAL. Age-and size-appropriate resuscitative equipment (i.e., intubation and cardioversion equipment, oxygen, suction, and a secure intravenous line) and personnel qualified in its use must be immediately available.

Preanesthetic medication is generally advisable. BREVITAL may be used with any of the recognized preanesthetic medications.

Preparation Of Solution

FOLLOW DILUTION INSTRUCTIONS EXACTLY.

Freshly prepare solutions of BREVITAL and use promptly. Reconstituted solutions of BREVITAL are chemically stable at room temperature for 24 hours.

Diluents

ONLY USE BACTERIOSTATIC-FREE DILUENT – Recommended diluents are based on route of administration (see Dilution Instructions).

Incompatible diluents: Lactated Ringer’s Injection

Dilution Instructions

1% solutions (10 mg/mL) should be prepared for intermittent intravenous and rectal administration; 0.2% solutions (2 mg/mL) should be prepared for continuous intravenous drug administration; 5% solutions (50 mg/mL) should be prepared for intramuscularadministration.

Contents of vials should be diluted as follows:

For Intermitient Intravenous And Rectal Administration

The preferred diluent for intermittent intravenous and rectal administration is Sterile Water for Injection. 5% Dextrose Injection, or 0.9% Sodium Chloride Injection are also acceptable diluents.

 

StrengthAmount of Diluent to Be Added to the Contents of the BREVITAL VialFor 1% methohexital solution
(10 mg/mL)
500 mg50 mLno further dilution needed
2.5 g15 mLadd to 235 mL diluent for 250 mL total volume

When the first dilution is made with the 2.5 g, the solution in the vial will be yellow. W hen further diluted to make a 1% solution, it must be clear and colorless or should not be used.

For Continuous Intravenous Administration

For continuous drip anesthesia, prepare a 0.2% solution by adding 500 mg of BREVITAL Sodium to 250 mL of diluent. For this dilution, either 5% glucose solution or isotonic (0.9%) sodium chloride solution ONLY is recommended as the diluent instead of sterile water for injection in order to avoid extreme hypotonicity.

 

StrengthAmount of Diluent to Be Added to the Contents of the BREVITAL VialFor 0.2% methohexital solution
(2 mg/mL)
500 mg15 mLadd to 235 mL diluent for 250 mL total volume

 

For Intramuscular Administration

The preferred diluent for intramuscular administration is Sterile Water for Injection. 0.9% Sodium Chloride Injection is also an acceptable diluent.

 

StrengthAmount of Diluent to Be Added to the Contents of the BREVITAL VialFor 5% methohexital solution
(50 mg/mL)
500 mg10 mLno further dilution needed
2.5 g50 mLno further dilution needed

 

Administration

Dosage is highly individualized; the drug should be administered only by those completely familiar with its quantitative differences from other barbiturate anesthetics.

Adults

BREVITAL Sodium is administered intravenously in a concentration of no higher than 1%. Higher concentrations markedly increase the incidence of muscular movements and irregularities in respiration and blood pressure.

Induction of anesthesia

For induction of anesthesia, a 1% solution is administered at a rate of about 1 mL/5 seconds. Gaseous anesthetics and/or skeletal muscle relaxants may be administered concomitantly. The dose required for induction may range from 50 to 120 mg or more but averages about 70 mg. The usual dosage in adults ranges from 1 to 1.5 mg/kg. The induction dose usually provides anesthesia for 5 to 7 minutes.

Maintenance of anesthesia

Maintenance of anesthesia may be accomplished by intermittent injections of the 1% solution or, more easily, by continuous intravenous drip of a 0.2% solution. Intermittent injections of about 20 to 40 mg (2 to 4 mL of a 1% solution) may be given as required, usually every 4 to 7 minutes. For continuous drip, the average rate of administration is about 3 mL of a 0.2% solution/minute (1 drop/second). The rate of flow must be individualized for each patient. For longer surgical procedures, gradual reduction in the rate of administration is recommended. Other parenteral agents, usually narcotic analgesics, are ordinarily employed along with BREVITAL during longer procedures.

Pediatric Patients

BREVITAL is administered intramuscularly in a 5% concentration and administered rectally as a 1% solution.

Induction of anesthesia

For the induction of anesthesia by the intramuscular route of administration, the usual dose ranges from 6.6 to 10 mg/kg of the 5% concentration. For rectal administration, the usual dose for induction is 25 mg/kg using the 1% solution.

Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.

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