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Dosage Form: injection

Medically reviewed on Sep 3, 2018

Flexible Plastic Container

Rx only

Aminosyn-HBC Description

Aminosyn®-HBC 7%, Sulfite-Free, (an amino acid injection high branched chain) is a sterile, nonpyrogenic, hypertonic solution for intravenous infusion. Aminosyn-HBC 7% is oxygen sensitive. The solution contains the following crystalline amino acids:

Essential Amino Acids (mg/100 mL)





Lysine (acetate)*












Nonessential Amino Acids (mg/100 mL)















*Amount cited is for lysine alone and does not include the acetate salt.

**Histidine is considered essential for patients in renal failure.

Crystalline Amino Acids (g/100 mL)


Branched Chain Amino Acids (g/100 mL)


Nitrogen (approx. g/100 mL)


Acetate (C2H3O2-)a (mEq/Liter)


Osmolarity (mOsmol/liter)


pHb (Range)

5.2 (4.5 to 6.0)

aIncludes acetate from acetic acid used in processing and from lysine acetate.

bMay contain hydrochloric acid for pH adjustment.

The formulas for the individual amino acids present in Aminosyn-HBC 7% are as follows:

Essential Amino Acids

Isoleucine, USP


Leucine, USP


Lysine Acetate, USP


Methionine, USP


Phenylalanine, USP


Threonine, USP


Tryptophan, USP


Valine, USP


Nonessential Amino Acids

Alanine, USP


Arginine, USP


Histidine, USP


Proline, USP


Serine, USP


Tyrosine, USP


Glycine, USP


The flexible plastic container is fabricated from a specially formulated polyvinylchloride. Water can permeate from inside the container into the overwrap but not in amounts sufficient to affect the solution significantly.

Solutions in contact with the plastic container may leach out certain chemical components from the plastic in very small amounts; however, biological testing was supportive of the safety of the plastic container materials.

Exposure to temperatures above 25°C/77°F during transport and storage will lead to minor losses in moisture content. Higher temperatures lead to greater losses. It is unlikely that these minor losses will lead to clinically significant changes within the expiration period.

Aminosyn-HBC - Clinical Pharmacology

Aminosyn-HBC 7%, Sulfite-Free, (an amino acid injection — high branched chain) provides a mixture of biologically utilizable essential and nonessential crystalline amino acids in concentrated form for protein synthesis. The solution contains a high (45%) concentration of the branched chain amino acids (isoleucine, leucine and valine) relative to other general purpose amino acid injections. Aminosyn-HBC 7%, when mixed with a concentrated source of calories such as hypertonic dextrose, supplemented with appropriate electrolytes, vitamins and trace metals and infused by central vein with or without fat emulsion, provides total parenteral nutrition (TPN) for the severely compromised patient.

Aminosyn-HBC 7% may also be administered peripherally with minimal caloric supplementation in order to conserve lean body mass in the well-nourished, mildly catabolic patient.

A high concentration of the branched chain amino acids is present in Aminosyn-HBC 7% because these amino acids have been reported to be metabolically active in the compromised patient.

The acetate content of the solution, under conditions of parenteral nutrition, would not be expected to affect acid-base status adversely when renal and respiratory functions are normal; confirmatory clinical/experimental evidence is not available. The amount of sodium present is not clinically significant. The concentration of chloride present is typical for TPN regimens.

Indications and Usage for Aminosyn-HBC

Parenteral nutrition with Aminosyn-HBC 7%, Sulfite-Free, (an amino acid injection — high branched chain) is indicated to prevent nitrogen loss or treat negative nitrogen balance in adults where (1) the alimentary tract, by the oral, gastrostomy, or jejunostomy route, cannot or should not be used, or adequate protein intake is not feasible by these routes; (2) gastrointestinal absorption of protein is impaired; or (3) nitrogen homeostasis is substantially impaired as with severe trauma or sepsis. Dosage, route of administration and concomitant infusion of nonprotein calories are dependent on various factors, such as nutritional and metabolic status of the patient, anticipated duration of parenteral nutrition support, and vein tolerance. See DOSAGE AND ADMINISTRATION for additional information.

Central Venous Nutrition: Central venous infusion should be considered when amino acid solutions are to be admixed with hypertonic dextrose to promote protein synthesis in hypercatabolic or severely depleted patients, or those requiring long-term parenteral nutrition. See SPECIAL PRECAUTIONS FOR CENTRAL INFUSIONS.

Peripheral Parenteral Nutrition: For moderately catabolic or depleted patients in whom the central venous route is not indicated, diluted amino acid solutions with minimal caloric supplementation may be infused by peripheral vein, supplemented, if desired, with fat emulsion.


Aminosyn-HBC 7%, Sulfite-Free, (an amino acid injection — high branched chain) is contraindicated in patients with anuria, hepatic coma, inborn errors of amino acid metabolism (especially those involving branched chain amino acid metabolism such as Maple Syrup Urine Disease and Isovaleric Acidemia), severe or uncorrected electrolyte or acid-base imbalance, hyperammonemia or other disorders involving impaired nitrogen utilization, or hypersensitivity to one or more amino acids present in the solution.


Safe, effective use of parenteral nutrition requires a knowledge of nutrition as well as clinical expertise in recognition and treatment of the complications which can occur. Frequent evaluation and laboratory determinations are necessary for proper monitoring of parenteral nutrition. Studies should include blood sugar, serum proteins, kidney and liver function tests, electrolytes, hemogram, carbon dioxide content, serum osmolarities, blood cultures, and blood ammonia levels.

Administration of amino acids in the presence of impaired renal function or gastrointestinal bleeding may augment an already elevated blood urea nitrogen. Patients with azotemia from any cause should not be infused with amino acids without regard to total nitrogen intake.

Administration of amino acid solutions that have not been specifically formulated to treat patients with hepatic insufficiency may result in plasma amino acid imbalances, hyperammonemia, prerenal azotemia, stupor and coma.

Conservative doses of amino acids should be given, dictated by the nutritional status of the patient. Should symptoms of hyperammonemia develop, amino acid administration should be discontinued and the patient's clinical status re-evaluated.

Administration of intravenous solutions can cause fluid and/or solute overload resulting in dilution of serum electrolyte concentrations, overhydration, congested states, or pulmonary edema. The risk of dilutional states is inversely proportional to the electrolyte concentrations of the solutions. The risk of solute overload causing congested states with peripheral and pulmonary edema is directly proportional to the electrolyte concentrations of the solutions.

WARNING: This product contains aluminum that may be toxic. Aluminum may reach toxic levels with prolonged parenteral administration if kidney function is impaired. Premature neonates are particularly at risk because their kidneys are immature, and they require large amounts of calcium and phosphate solutions, which contain aluminum.

Research indicates that patients with impaired kidney function, including premature neonates, who receive parenteral levels of aluminum at greater than 4 to 5 mcg/kg/day accumulate aluminum at levels associated with central nervous system and bone toxicity. Tissue loading may occur at even lower rates of administration.


Special care must be taken when administering hypertonic glucose to provide calories in diabetic or prediabetic patients.

Do not withdraw venous blood for blood chemistries through the peripheral infusion site, as interference with estimations of nitrogen-containing substances may occur.

Intravenously administered amino acids should be used with caution in patients with history of renal disease, pulmonary disease, or with cardiac insufficiency so as to avoid excessive fluid accumulation.

The effect of infusion of amino acids, without dextrose, upon carbohydrate metabolism of children is not known at this time.

Nitrogen intake should be carefully monitored in patients with impaired renal function.

Aminosyn-HBC 7%, Sulfite -Free, (an amino acid injection — high branched chain) contains no added phosphorus. Patients, especially those with hypophosphatemia, may require the addition of phosphate. To prevent hypocalcemia, calcium supplementation should always accompany phosphate administration. To assure adequate intake, serum levels should be monitored frequently.

For long-term total nutrition, or if a patient has inadequate fat stores, it is essential to provide adequate exogenous calories concurrently with the amino acids. Concentrated dextrose solutions are an effective source of such calories. Such strongly hypertonic nutrient solutions should be administered through an indwelling intravenous catheter with the tip located in the superior vena cava.

Aminosyn-HBC contains no more than 25 mcg/L of aluminum.





Central vein infusion (with added concentrated carbohydrate solutions) of amino acid solutions requires a knowledge of nutrition as well as clinical expertise in recognition and treatment of complications. Attention must be given to solution preparation, administration and patient monitoring. IT IS ESSENTIAL THAT A CAREFULLY PREPARED PROTOCOL, BASED ON CURRENT MEDICAL PRACTICES, BE FOLLOWED, PREFERABLY BY AN EXPERIENCED TEAM.

SUMMARY HIGHLIGHTS OF COMPLICATIONS (See also Current Medical Literature).

  1. Technical

    The placement of a central venous catheter should be regarded as a surgical procedure. One should be fully acquainted with various techniques of catheter insertion. For details of technique and placement sites, consult the medical literature. X-ray is the best means of verifying catheter placement. Complications known to occur from the placement of central venous catheters are pneumothorax, hemothorax, hydrothorax, artery puncture and transection, injury to the brachial plexus, malposition of the catheter, formation of arteriovenous fistula, phlebitis, thrombosis and air and catheter emboli.

  2. Septic

    The constant risk of sepsis is present during administration of total parenteral nutrition. It is imperative that the preparation of the solution and the placement and care of catheters be accomplished under strict aseptic conditions.

    Solutions should ideally be prepared in the hospital pharmacy under a laminar flow hood using careful aseptic technique to avoid inadvertent touch contamination. Solutions should be used promptly after mixing.

    Storage should be under refrigeration and limited to a brief period of time, preferably less than 24 hours.

    Administration time for a single bottle and set should never exceed 24 hours.

  3. Metabolic

    The following metabolic complications have been reported with TPN administration: Metabolic acidosis and alkalosis, hypophosphatemia, hypocalcemia, osteoporosis, hyperglycemia, and glycosuria, rebound hypoglycemia, osmotic diuresis and dehydration, elevated liver enzymes, hypo- and hypervitaminosis, electrolyte imbalances and hyperammonemia in children. Frequent evaluations are necessary especially during the first few days of therapy to prevent or minimize these complications.

    Administration of glucose at a rate exceeding the patient’s utilization rate may lead to hyperglycemia, coma and death.


Teratogenic effects.

Pregnancy Category C: Animal reproduction studies have not been performed with Aminosyn-HBC 7%. It is not known whether Aminosyn-HBC 7% can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Aminosyn-HBC 7% should be given to a pregnant woman only if clearly needed.

Pediatric Use:

Safety and effectiveness in children have not been established.

Geriatric Use:

Clinical studies of Aminosyn-HBC 7% did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosage range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

Drug Interactions

Because of its antianabolic activity, concurrent administration of tetracycline may reduce the potential anabolic effects of amino acids infused with dextrose as part of a parenteral feeding regimen.

Additives may be incompatible. Consult with pharmacist if available. When introducing additives, use aseptic technique, mix thoroughly and do not store.

Adverse Reactions


Reactions secondary to the administration technique or the solution include febrile response, infection at the injection site, venous thrombosis or phlebitis extending from the site of injection, extravasation, and hypervolemia.

Local reactions at the infusion site, consisting of a warm sensation, erythema, phlebitis and thrombosis have been reported with peripherally administered amino acid solutions, especially if other substances are also administered through the same site.

Generalized flushing, fever and nausea have been reported during peripheral administration of amino acids.

Symptoms may result from an excess or deficit of one or more of the ions present in the solution; therefore, frequent monitoring of electrolyte levels is essential.

If electrolyte supplements are required during peripheral infusions, it is recommended that additives be administered throughout the day in order to avoid possible vein irritation. Irritating additive medications may require injection at another site and should not be added directly to the amino acid infusate.

Phosphorus deficiency may lead to impaired tissue oxygenation and acute hemolytic anemia. Relative to calcium, excessive phosphorus intake can precipitate hypocalcemia with cramps, tetany and muscular hyperexcitability.

If an adverse reaction does occur, discontinue the infusion, evaluate the patient, institute appropriate therapeutic countermeasures, and save the remainder of the fluid for examination if deemed necessary.


In the event of fluid, electrolyte or metabolic imbalances re-evaluate the patient and institute appropriate corrective measures; see WARNINGS and PRECAUTIONS.

Aminosyn-HBC Dosage and Administration

Aminosyn-HBC 7%, Sulfite-Free, (an amino acid injection — high branched chain) is administered intravenously. The total dose depends upon daily protein requirements and the patient's metabolic and clinical response. The determination of nitrogen balance and accurate daily body weights, corrected for fluid balance, is probably the best means of assessing individual protein requirements.

While Recommended Dietary Allowances for oral protein are approximately 0.8 g/kg of body weight for the healthy adult, protein and caloric requirements in traumatized or malnourished patients may be substantially increased. To satisfy protein needs and promote positive nitrogen balance, the daily dosage level of amino acids for adult patients with adequate caloric intake is approximately 1.5 g/kg of body weight. Severely catabolic states may require higher dosage levels. Such higher doses must be accompanied by frequent laboratory evaluation. Fat emulsion may be administered to help meet energy requirements. Fat emulsion coadministration should be considered when prolonged parenteral nutrition is required in order to prevent essential fatty acid deficiency (E.F.A.D.). Serum lipids should be monitored for evidence of E.F.A.D. in patients maintained on fat-free total parenteral nutrition.

For optimum amino acid utilization, sufficient intracellular electrolytes (sodium, magnesium, and phosphate) should be provided. Approximately 60 to 180 mEq of potassium, 10 to 30 mEq of magnesium, and 10 to 40 mM of phosphate/day appear necessary to achieve optimum metabolic response. In addition, sufficient quantities of the major extracellular electrolytes (sodium, calcium and chloride) must be given. In patients with hyperchloremic or other metabolic acidoses, sodium and potassium may be added as the acetate or lactate salts to provide bicarbonate precursors. The electrolyte content of Aminosyn-HBC 7% must be considered when calculating daily electrolyte intake. Serum electrolytes, including magnesium and phosphorus, should be monitored frequently. If a patient's nutritional intake is primarily parenteral, trace metals and vitamins, especially the water-soluble vitamins, should also be provided.

Central Venous Nutrition: For severely catabolic, depleted patients or those who require long-term parenteral nutrition, central venous nutrition should be considered. Total parenteral nutrition may be started with admixtures containing lower concentrations of dextrose; dextrose concentrations may be gradually increased to approximate estimated energy requirements as the patient’s glucose tolerance increases.

In adults, strongly hypertonic admixtures of amino acids and dextrose may be safely administered only by continuous infusion through a central venous catheter with the tip located in the superior vena cava. A mixture containing 500 mL of Aminosyn-HBC 7% with 500 mL of concentrated dextrose supplemented with electrolytes, trace metals and vitamins may be administered over a period of approximately 8 hours. If prescribed administration rates should fall behind schedule, no attemptto “catch up” to planned intake should be made. In addition to meeting protein requirements, the administration is also governed by the patient’s glucose tolerance, especially during the first few days of therapy. The daily intake of the amino acid/dextrose admixture should be increased gradually to the maximum required dose, based on serial determinations of urine and blood sugar levels. To prevent hyperglycemia and glycosuria, certain patients may require exogenous insulin in order to receive adequate calories from hypertonic dextrose. To prevent rebound hypoglycemia, a solution containing 5% dextrose should be administered when hypertonic dextrose infusions are abruptly discontinued.

Peripheral Parenteral Nutrition: For the moderately catabolic, depleted patient in whom aggressive central venous nutrition is not necessary, Aminosyn-HBC 7% may be given by peripheral vein with hypocaloric energy supplements. Dextrose in a final concentration of up to 10% and/or lipid emulsion may be administered.

Fat provides approximately 9 kcal/gram and in long-term therapy (more than 5-7 days) will prevent essential fatty acid deficiency. Parenteral fat emulsion may be administered simultaneously with amino acid-dextrose admixtures via a Y-type administration set to supplement caloric intake. Fat, however, should not provide more than 60% of the total caloric intake.

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

WARNING: Do not use flexible container in series connections.

How is Aminosyn-HBC Supplied

Aminosyn-HBC 7%, Sulfite-Free, (an amino acid injection — high branched chain) is supplied in 500 and 1000 mL single-dose containers (List No. 4168).

Exposure of pharmaceutical products to heat should be minimized. Avoid excessive heat. Protect from freezing. It is recommended that the product be stored at room temperature (25°C).

Avoid exposure to light.

©Hospira 2004


Printed in USA


isoleucine, leucine, lysine acetate, methionine, phenylalanine, threonine, tryptophan, valine, alanine, arginine, histidine, proline, serine, tyrosine and glycine injection, solution
Product Information
Product Type HUMAN PRESCRIPTION DRUG LABEL Item Code (Source) NDC:0409-4168
Route of Administration INTRAVENOUS DEA Schedule     
Active Ingredient/Active Moiety
Ingredient Name Basis of Strength Strength
Isoleucine (Isoleucine) Isoleucine 789 mg  in 100 mL
Leucine (Leucine) Leucine 1576 mg  in 100 mL
Lysine acetate (Lysine) Lysine 265 mg  in 100 mL
Methionine (Methionine) Methionine 206 mg  in 100 mL
Phenylalanine (Phenylalanine) Phenylalanine 228 mg  in 100 mL
Threonine (Threonine) Threonine 272 mg  in 100 mL
Tryptophan (Tryptophan) Tryptophan 88 mg  in 100 mL
Valine (Valine) Valine 789 mg  in 100 mL
Alanine (Alanine) Alanine 660 mg  in 100 mL
Arginine (Arginine) Arginine 507 mg  in 100 mL
Histidine (Histidine) Histidine 154 mg  in 100 mL
Proline (Proline) Proline 448 mg  in 100 mL
Serine (Serine) Serine 221 mg  in 100 mL
Tyrosine (Tyrosine) Tyrosine 33 mg  in 100 mL
Glycine (Glycine) Glycine 660 mg  in 100 mL
Inactive Ingredients
Ingredient Name Strength
Acetic Acid  
Hydrochloric Acid  
# Item Code Package Description
1 NDC:0409-4168-03 12 BAG (12 BAG) in 1 CASE
1 500 mL (500 MILLILITER) in 1 BAG
2 NDC:0409-4168-05 6 BAG (6 BAG) in 1 CASE
2 1000 mL (1000 MILLILITER) in 1 BAG
Labeler - Hospira, Inc.
Hospira, Inc.

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