Diphenhydramine Hydrochloride 50 mg/mL Injection, Solution, 5 vials — NDC 55154-9363-5 (Billing 55154-9363-05)
This is a package of 5 vials of Diphenhydramine Hydrochloride 50 mg/mL Injection, Solution from Cardinal Health 107, LLC, marketed since Aug 2002 and currently FDA-listed. It is this product's only package size.
Identity & classification
Regulatory identifiers FDA, NLM and CMS codes for this package
Drug-database identifiers Medi-Span GPI and First Databank GCN / HICL / AHFS classification
- GPI-14 (Medi-Span): 41200030102010
- RxCUI (RxNorm): 1723740
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
- RxNorm (NLM RxNav) · catalog refreshed Oct 1, 2026
- Medi-Span GPI (licensed)
- First Databank (licensed) · refreshed Oct 1, 2026
RxNorm drug class
This medicine belongs to the Histamine-1 Receptor Antagonist class.
Where does this data come from?
- RxClass (NLM) · catalog refreshed Oct 1, 2026
Clinical
- Oral products temporarily relieve hay fever and other upper respiratory allergy symptoms like runny nose, sneezing and itchy, watery eyes. They also ease runny nose and sneezing fr...
- Oral forms are generally taken every 4 to 6 hours, with no more than 6 doses in 24 hours. The amount depends on age and the product, so check the package chart or ask me or your do...
- It can. Drowsiness is common, so be careful driving or using machinery. Alcohol, sedatives and tranquilizers make it worse, so avoid them.
- Oral products are not for children under 2 years, and some are not for children under 6. Children can become excitable, and overdose can be very dangerous. Always follow the age di...
Patient education
Supplement & herbal interactions
Where does this data come from?
- MedlinePlus (NLM) · refreshed Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
Ask a licensed pharmacist directly — free, answered by our team.
Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per mL | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | Not in the retail survey — common for institutional, discontinued, or low-volume packs. | |
| Medicaid paysCMS SDUD · 12 mo | No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data. | |
| Medicare drug plans payPart D · quarterly | No Part D plan price is available for this NDC in our data. | |
Where does this data come from?
- CMS NADAC weekly file
- CMS ASP pricing files · refreshed Sep 20, 2026
- CMS Medicaid State Drug Utilization Data · refreshed Oct 2, 2026
- CMS Part D plan pricing files · refreshed Sep 24, 2026
- VA National Acquisition Center price file
Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Marketing end | Status |
|---|---|---|---|---|
| 55154-9363-05 You're viewing this Main listing | 5 VIAL in 1 BAG / 1 mL in 1 VIAL | 2002-05-28 | — | Active |
Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Diphenhydramine Hydrochloride 50 mg/mL 23155-0263-31 | Heritage | 1 vial | $0.790 | AP | FDA listed | — |
| Diphenhydramine hydrochloride 50 mg/mL 00641-6282-25 | Hikma | 25 vials | $0.898 | AP | Availability likely | — |
| Diphenhydramine Hydrochloride 50 mg/mL 23155-0264-41 | Heritage | 25 vials | $0.898 | AP | Availability likely | — |
| Diphenhydramine Hydrochloride 50 mg/mL 25021-0481-01 | Sagent | 25 vials | $0.898 | AP | Availability likely | — |
| Diphenhydramine 50 mg/mL 42571-0337-87 | Micro | 25 vials | $0.898 | AP | Availability likely | — |
| Diphenhydramine 50 mg/mL 63323-0664-01 | Fresenius | 25 vials | $0.898 | AP | Availability likely | — |
| Diphenhydramine Hydrochloride 50 mg/mL 72485-0101-25 | Armas | 25 vials | $0.898 | AP | Availability likely | — |
| Diphenhydramine 50 mg/mL 83634-0781-01 | Avenacy, | 25 vials | $0.898 | AP | Availability likely | — |
| Diphenhydramine Hydrochloride 50 mg/mL 00641-0376-25 | Hikma | 25 vials | $0.898 | AP | Availability likely | — |
| Diphenhydramine Hydrochloride 50 mg/mL 00404-9851-01 | Henry | 1 vial | — | AP | FDA listed | — |
| Diphenhydramine 50 mg/mL 42571-0169-55 | Micro | 10 ampules | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 51662-1219-01 | HF | 1 ml | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 51662-1348-01 | HF | 1 ml | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 51662-1374-01 | HF | 1 ml | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mLthis 55154-9363-05 | Cardinal | 5 vials | — | AP | FDA listed | — |
| Diphenhydramine 50 mg/mL 65219-0820-01 | Fresenius | 25 vials | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 68083-0611-25 | Gland | 25 vials | — | AP | FDA listed | — |
| Diphenhydramine hydrochloride 50 mg/mL 70518-4455-00 | REMEDYREPACK | 25 vials | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 70518-4536-00 | REMEDYREPACK | 25 vials | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 71872-7005-01 | Medical | 1 vial | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 71872-7180-01 | Medical | 1 vial | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 71872-7373-01 | Medical | 1 vial | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 84549-0101-25 | ProPharma | 1 ml | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 55154-5102-05 | Cardinal | 5 vials | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 70518-1082-01 | REMEDYREPACK | 25 vials | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 76045-0235-10 | Fresenius | 1 syringe | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 42571-0511-56 | Micro | 1 vial | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 76045-0102-10 | Fresenius | 1 syringe | — | AP | FDA listed | — |
| Diphenhydramine Hydrochloride 50 mg/mL 85766-0253-25 | Sportpharm | 25 vials | — | AP | FDA listed | — |
| Diphenhydramine 50 mg/mL 70518-4765-01 | REMEDYREPACK | 25 vials | — | AP | FDA listed | — |
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA Orange Book · refreshed Sep 3, 2026
- CMS NADAC weekly file
Availability & generic status
This product is an FDA-approved generic. Other versions of the same drug are listed under Therapeutic equivalents, least expensive first.
Where does this data come from?
- FDA Orange Book · refreshed Sep 3, 2026
Inactive Ingredients / Excipients
Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.
Where does this data come from?
IACT rows and label-wide narrative are kept separate; availability and product-level specificity depend on the submitted label.- FDA label on DailyMed · label index refreshed Oct 1, 2026
- FDA openFDA NDC Directory · synced Oct 1, 2026
Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
Why might an inactive ingredient be missing?
Can inactive ingredients matter?
Manufacturer & labeler
Where does this data come from?
- FDA openFDA NDC Directory · synced Oct 1, 2026
- Drugs@FDA
Full prescribing information FDA SPL
🎯 Indications and Usage ▾
INDICATIONS AND USAGE: Diphenhydramine hydrochloride in the injectable form is effective in adults and pediatric patients, other than premature infants and neonates, for the following conditions when diphenhydramine hydrochloride in the oral form is impractical. Antihistaminic For amelioration of allergic reactions to blood or plasma, in anaphylaxis as an adjunct to epinephrine and other standard measures after the acute symptoms have been controlled, and for other uncomplicated allergic conditions of the immediate type when oral therapy is impossible or contraindicated.
Motion Sickness For active treatment of motion sickness. Antiparkinsonism For use in parkinsonism, when oral therapy is impossible or contraindicated, as follows: parkinsonism in the elderly who are unable to tolerate more potent agents; mild cases of parkinsonism in other age groups, and in other cases of parkinsonism in combination with centrally acting anticholinergic agents.
Antihistaminic For amelioration of allergic reactions to blood or plasma, in anaphylaxis as an adjunct to epinephrine and other standard measures after the acute symptoms have been controlled, and for other uncomplicated allergic conditions of the immediate type when oral therapy is impossible or contraindicated.
Motion Sickness For active treatment of motion sickness.
Antiparkinsonism For use in parkinsonism, when oral therapy is impossible or contraindicated, as follows: parkinsonism in the elderly who are unable to tolerate more potent agents; mild cases of parkinsonism in other age groups, and in other cases of parkinsonism in combination with centrally acting anticholinergic agents.
⏱️ Dosage and Administration ▾
DOSAGE AND ADMINISTRATION: THIS PRODUCT IS FOR INTRAVENOUS OR INTRAMUSCULAR ADMINISTRATION ONLY. Diphenhydramine hydrochloride in the injectable form is indicated when the oral form is impractical. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
DOSAGE SHOULD BE INDIVIDUALIZED ACCORDING TO THE NEEDS AND THE RESPONSE OF THE PATIENT. Pediatric Patients, other than premature infants and neonates: 5 mg/kg/24 hr or 150 mg/m 2 /24 hr. Maximum daily dosage is 300 mg.
Divide into four doses, administered intravenously at a rate generally not exceeding 25 mg/min, or deep intramuscularly. Adults: 10 to 50 mg intravenously at a rate generally not exceeding 25 mg/min, or deep intramuscularly, 100 mg if required; maximum daily dosage is 400 mg.
⛔ Contraindications ▾
CONTRAINDICATIONS: Use in Neonates or Premature Infants This drug should not be used in neonates or premature infants. Use in Nursing Mothers Because of the higher risk of antihistamines for infants generally, and for neonates and prematures in particular, antihistamine therapy is contraindicated in nursing mothers. Use as a Local Anesthetic Because of the risk of local necrosis, this drug should not be used as a local anesthetic.
Antihistamines are also contraindicated in the following conditions: Hypersensitivity to diphenhydramine hydrochloride and other antihistamines of similar chemical structure.
Use in Neonates or Premature Infants This drug should not be used in neonates or premature infants.
Use in Nursing Mothers Because of the higher risk of antihistamines for infants generally, and for neonates and prematures in particular, antihistamine therapy is contraindicated in nursing mothers.
Use as a Local Anesthetic Because of the risk of local necrosis, this drug should not be used as a local anesthetic. Antihistamines are also contraindicated in the following conditions: Hypersensitivity to diphenhydramine hydrochloride and other antihistamines of similar chemical structure.
⚠️ Warnings ▾
WARNINGS: Antihistamines should be used with considerable caution in patients with narrow-angle glaucoma, stenosing peptic ulcer, pyloroduodenal obstruction, symptomatic prostatic hypertrophy, or bladder-neck obstruction. Local necrosis has been associated with the use of subcutaneous or intradermal use of intravenous diphenhydramine hydrochloride. Use in Pediatric Patients In pediatric patients, especially, antihistamines in overdosage may cause hallucinations, convulsions, or death.
As in adults, antihistamines may diminish mental alertness in pediatric patients. In the young pediatric patient, particularly, they may produce excitation. Use in the Elderly (approximately 60 years or older) Antihistamines are more likely to cause dizziness, sedation, and hypotension in elderly patients.
Use in Pediatric Patients In pediatric patients, especially, antihistamines in overdosage may cause hallucinations, convulsions, or death. As in adults, antihistamines may diminish mental alertness in pediatric patients. In the young pediatric patient, particularly, they may produce excitation.
Use in the Elderly (approximately 60 years or older) Antihistamines are more likely to cause dizziness, sedation, and hypotension in elderly patients.
🤒 Adverse Reactions ▾
ADVERSE REACTIONS: To report SUSPECTED ADVERSE REACTIONS, contact Fresenius Kabi USA, LLC at 1-800-551-7176 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. The most frequent adverse reactions are underscored. 1.
General: Urticaria, drug rash, anaphylactic shock, photosensitivity, excessive perspiration, chills, dryness of mouth, nose and throat. 2. Cardiovascular System: Hypotension, headache, palpitations, tachycardia, extrasystoles.
3. Hematologic System: Hemolytic anemia, thrombocytopenia, agranulocytosis. 4.
Nervous System: Sedation , sleepiness , dizziness , disturbed coordination , fatigue, confusion, restlessness, excitation, nervousness, tremor, irritability, insomnia, euphoria, paresthesia, blurred vision, diplopia, vertigo, tinnitus, acute labyrinthitis, neuritis, convulsions. 5. GI System: Epigastric distress , anorexia, nausea, vomiting, diarrhea, constipation.
6. GU System: Urinary frequency, difficult urination, urinary retention, early menses. 7.
Respiratory System: Thickening of bronchial secretions , tightness of chest or throat and wheezing, nasal stuffiness.
🆘 Overdosage ▾
OVERDOSAGE: Antihistamine overdosage reactions may vary from central nervous system depression to stimulation. Stimulation is particularly likely in pediatric patients. Atropine-like signs and symptoms; dry mouth; fixed, dilated pupils; flushing; and gastrointestinal symptoms may also occur. Stimulants should not be used. Vasopressors may be used to treat hypotension.
🧬 Clinical Pharmacology ▾
CLINICAL PHARMACOLOGY: Diphenhydramine hydrochloride is an antihistamine with anticholinergic (drying) and sedative side effects. Antihistamines appear to compete with histamine for cell receptor sites on effector cells. Diphenhydramine hydrochloride in the injectable form has a rapid onset of action.
Diphenhydramine hydrochloride is widely distributed throughout the body, including the CNS. A portion of the drug is excreted unchanged in the urine, while the rest is metabolized via the liver. Detailed information on the pharmacokinetics of diphenhydramine hydrochloride injection is not available.
📦 How Supplied / Storage and Handling ▾
HOW SUPPLIED: DiphenhydrAMINE Hydrochloride Injection, USP in parenteral form is supplied as: Unit of Sale Strength Overbagged with 5 x 1 mL Single Dose Vial in each bag, NDC 55154-9363-5 50 mg per mL 1 mL fill in a 2 mL vial. WARNING: This Unit Dose package is not child resistant and is Intended for Institutional Use Only. Keep this and all drugs out of the reach of children.
It is supplied as a sterile, pyrogen-free solution containing 50 mg diphenhydramine hydrochloride in each milliliter of solution. The container closure is not made with natural rubber latex. Store at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature].
Protect from light. Keep from freezing.
📋 Description ▾
DESCRIPTION: Diphenhydramine hydrochloride is an antihistamine drug having the chemical name 2-(Diphenylmethoxy)-N,N-dimethylethylamine hydrochloride. It occurs as a white, crystalline powder, is freely soluble in water and alcohol. The structural formula is as follows: C 17 H 21 NO•HCl M.W.
291.82 Diphenhydramine hydrochloride in the parenteral form is a sterile, pyrogen-free solution available in a concentration of 50 mg of diphenhydramine hydrochloride per mL. pH 4.0 to 6.5; sodium hydroxide and/or hydrochloric acid added, if needed, for pH adjustment. Structural Formula
⚠️ Precautions ▾
PRECAUTIONS: General Diphenhydramine hydrochloride has an atropine-like action and, therefore, should be used with caution in patients with a history of bronchial asthma, increased intraocular pressure, hyperthyroidism, cardiovascular disease or hypertension. Use with caution in patients with lower respiratory disease including asthma. Information for Patients Patients taking diphenhydramine hydrochloride should be advised that this drug may cause drowsiness and has an additive effect with alcohol.
Patients should be warned about engaging in activities requiring mental alertness such as driving a car or operating appliances, machinery, etc. Drug Interactions Diphenhydramine hydrochloride has additive effects with alcohol and other CNS depressants (hypnotics, sedatives, tranquilizers, etc.). MAO inhibitors prolong and intensify the anticholinergic (drying) effects of antihistamines.
Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term studies in animals to determine mutagenic and carcinogenic potential have not been performed. Pregnancy Pregnancy Category B. Reproduction studies have been performed in rats and rabbits at doses up to 5 times the human dose and have revealed no evidence of impaired fertility or harm to the fetus due to diphenhydramine hydrochloride.
There are, however, no adequate and well-controlled studies in pregnant women. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed. Pediatric Use Diphenhydramine hydrochloride should not be used in neonates and premature infants (see CONTRAINDICATIONS ).
Diphenhydramine hydrochloride may diminish mental alertness, or, in the young pediatric patient, cause excitation. Overdosage may cause hallucinations, convulsions, or death (see WARNINGS and OVERDOSAGE ). See also DOSAGE AND ADMINISTRATION section.
General Diphenhydramine hydrochloride has an atropine-like action and, therefore, should be used with caution in patients with a history of bronchial asthma, increased intraocular pressure, hyperthyroidism, cardiovascular disease or hypertension. Use with caution in patients with lower respiratory disease including asthma.
Information for Patients Patients taking diphenhydramine hydrochloride should be advised that this drug may cause drowsiness and has an additive effect with alcohol. Patients should be warned about engaging in activities requiring mental alertness such as driving a car or operating appliances, machinery, etc.
Drug Interactions Diphenhydramine hydrochloride has additive effects with alcohol and other CNS depressants (hypnotics, sedatives, tranquilizers, etc.). MAO inhibitors prolong and intensify the anticholinergic (drying) effects of antihistamines.
Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term studies in animals to determine mutagenic and carcinogenic potential have not been performed.
Pregnancy Pregnancy Category B. Reproduction studies have been performed in rats and rabbits at doses up to 5 times the human dose and have revealed no evidence of impaired fertility or harm to the fetus due to diphenhydramine hydrochloride. There are, however, no adequate and well-controlled studies in pregnant women.
Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed.
Pediatric Use Diphenhydramine hydrochloride should not be used in neonates and premature infants (see CONTRAINDICATIONS ). Diphenhydramine hydrochloride may diminish mental alertness, or, in the young pediatric patient, cause excitation. Overdosage may cause hallucinations, convulsions, or death (see WARNINGS and OVERDOSAGE ). See also DOSAGE AND ADMINISTRATION section.
📄 Package Label / Principal Display Panel ▾
Package/Label Display Panel NDC 55154-9363-5 DiphenhydrAMINE HYDROCHLORIDE INJECTION, USP 50 mg per mL HIGH POTENCY 5 x 1 mL SINGLE DOSE VIALS 50mg per mL bag label
About this NDC listing & data coverage
What data is (and isn’t) available for this NDC — tap to expand
| NDC identity (package / product / labeler codes) | ✓ Available |
| Labeler | ✓ Available |
| Product & package description | ✓ Available |
| Marketing category & status | ✓ Available |
| Active ingredient / dosage form / route | ✓ Available |
| FDA label (SPL via DailyMed) | ✓ Available |
| Package photos | — Not published for this NDC No photo available yet for this listing. |
| Inactive ingredients (structured) | — Not published for this NDC The labeler did not submit a structured excipient list, or no SPL is available. |
| NADAC pharmacy acquisition price (CMS) | — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey. |
| Orange Book / therapeutic-equivalence data | ✓ Available |
| HCPCS J-code billing crosswalk | — Not published for this NDC Most self-administered / retail products have no J-code — that is normal. |
| Medicaid utilization (CMS SDUD) | — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold. |