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Brevibloc

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Brevibloc

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BREVIBLOC
(esmolol hydrochloride) Injection

DRUG DESCRIPTION

BREVIBLOC (esmolol hydrochloride) is a beta adrenergic receptor blocker with a very short duration of action (elimination half-life is approximately 9 minutes). Esmolol Hydrochloride is:

  • (±)-Methyl p-[2-hydroxy-3-(isopropylamino) propoxy] hydrocinnamate hydrochloride and has the following structure:

BREVIBLOC (esmolol hydrochloride) Structural Formula Illustration

  • Esmolol Hydrochloride has the empirical formula C16H26NO4Cl and a molecular weight of 331.8. It has one asymmetric center and exists as an enantiomeric pair.
  • Esmolol Hydrochloride is a white to off-white crystalline powder. It is a relatively hydrophilic compound which is very soluble in water and freely soluble in alcohol. Its partition coefficient (octanol/water) at pH 7.0 is 0.42 compared to 17.0 for propranolol.

BREVIBLOC Dosage Forms

All BREVIBLOC presentations are clear, colorless to light yellow, sterile, nonpyrogenic, iso-osmotic solutions of esmolol hydrochloride in sodium chloride. The formulations for BREVIBLOC PREMIXED INJECTION, BREVIBLOC DOUBLE STRENGTH PREMIXED INJECTION, and BREVIBLOC INJECTION are described in the table below:

Table 3 : BREVIBLOC Formulations

  BREVIBLOC PREMIXED INJECTION (Esmolol Hydrochloride) BREVIBLOC DOUBLE STRENGTH PREMIXED INJECTION (Esmolol Hydrochloride) BREVIBLOC INJECTION (Esmolol Hydrochloride)
Esmolol Hydrochloride 10 mg/mL 20 mg/mL 10 mg/mL
Sodium Chloride, USP 5.9 mg/mL 4.1 mg/mL 5.9 mg/mL
Water for Injection, USP Q.S. to volume of 250 mL Q.S. to volume of 100 mL Q.S. to volume of 10 mL
Sodium Acetate Trihydrate , USP 2.8 mg/mL 2.8 mg/mL 2.8 mg/mL
Glacial Acetic Acid, USP 0.546 mg/mL 0.546 mg/mL 0.546 mg/mL
Sodium Hydroxide Q.S. to adjust pH to 4.5-5.5
Hydrochloric Acid Q.S. to adjust pH to 4.5-5.5
Q.S. = Quantity sufficient

The calculated osmolarity of BREVIBLOC PREMIXED INJECTION and BREVIBLOC DOUBLE STRENGTH PREMIXED INJECTION is 312 mOsmol/L. The 250 mL and 100 mL bags are non-latex, non-PVC IntraVia bags with dual PVC ports. The IntraVia bags are manufactured from a specially designed multilayer plastic (PL 2408). Solutions in contact with the plastic container leach out certain chemical compounds from the plastic in very small amounts; however, biological testing was supportive of the safety of the plastic container materials.

Last reviewed on RxList: 12/27/2012
This monograph has been modified to include the generic and brand name in many instances.

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