Orphenadrine Citrate 30 mg/mL Injection
🆔 Identity & classification
Where does this data come from?
🏷️ RxNorm drug class
This medicine belongs to the Muscle Relaxant class.
Where does this data come from?
🏭 Manufacturer & labeler
Where does this data come from?
🩺 Clinical
- It's a common assumption, but orphenadrine actually doesn't directly relax tense muscles. Researchers believe its benefit comes from pain-relieving properties — so it helps you fee...
- What exactly does orphenadrine do — does it just relax my muscles?
- Take one extended-release tablet in the morning and one in the evening — that's twice a day. Try to stick to the same times each day. If you're unsure whether to take it with food...
- How should I take the extended-release tablet?
Patient education
Supplement & herbal interactions
Where does this data come from?
Ask a licensed pharmacist directly — free, answered by our team.
🧪 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.
💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.
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UNII QTT17582CB
A strong acid used to adjust and maintain the proper pH level in liquid medicines, ensuring stability and preventing breakdown of active ingredients.
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2.9 mg / 1 mL
UNII 451W47IQ8X
Sodium chloride is common table salt. It's used in medicines as a buffer to maintain proper pH, as a filler to add bulk, or to adjust the osmotic balance in liquid formulations.
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UNII 55X04QC32I
A strong alkaline chemical used to adjust and maintain the pH balance of liquid medicines. It helps keep the medicine stable and ensures it stays effective during storage.
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0.91 mg / 1 mL
UNII 4VON5FNS3C
Sodium metabisulfite is a preservative derived from sulfur compounds. It prevents microbial growth and oxidation in medicines, helping extend shelf life and maintain product stability.
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UNII 059QF0KO0R
Water is a liquid solvent that dissolves and mixes ingredients together in liquid medicines, syrups, and injections. It helps distribute the active drug evenly throughout the product.
5 inactive ingredients listed in the exact product block matched to this NDC.
Where does this data come from?
ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.Inactive ingredient FAQ
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💲 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 each | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | Not in the retail survey — common for institutional, discontinued, or low-volume packs. | |
| Medicaid paysCMS SDUD · 12 mo | $132.21 | $1,322.12 / 10 ampules |
| 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?
🔁 Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Orphenadrine citrate 60 mg/2mL 00641-6182-10 | Hikma | 10 vials | $5.710 | AP | Availability likely | — |
| Orphenadrine Citrate 30 mg/mL 25021-0651-02 | Sagent | 10 vials | $5.710 | AP | Availability likely | — |
| Orphenadrine Citrate 30 mg/mLthis 00591-3222-47 | Actavis | 10 ampules | — | AP | FDA listed | — |
Where does this data come from?
⏳ 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?
🗺️ Medicaid utilization & spend
📊 Medicare Part D spend CMS · PART D · 2026 (Q1)
🔬 Reported adverse events (FAERS)
Top reported reactions
Age at onset
Reporter sex
Serious outcomes
Where does this data come from?
📦 Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Status |
|---|---|---|---|
| 00591-3222-47 You're viewing this | 10 AMPULE in 1 CARTON (0591-3222-47) / 2 mL in 1 AMPULE (0591-3222-02) | 2010-07-08 | Active |
🧭 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 | ✓ Available |
| Inactive ingredients (structured) | ✓ 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) | ✓ Available |
Questions about this listing
Why is there no price listed?
Is the NDC printed on the package the same as the 11-digit billing NDC?
What do the three segments of this NDC mean?
Is this package still being marketed?
Who lists this product with the FDA?
Do I need a prescription for this product?
Where does this data come from?
📄 Full prescribing information FDA SPL
🎯 Indications and Usage ▾
INDICATIONS AND USAGE Orphenadrine citrate is indicated as an adjunct to rest, physical therapy, and other measures for the relief of discomfort associated with acute, painful musculo-skeletal conditions. The mode of action of this drug has not been clearly identified, but may be related to its analgesic properties. Orphenadrine citrate does not directly relax tense skeletal muscles in man.
⏱️ Dosage and Administration ▾
DOSAGE AND ADMINISTRATION Adults: 2 mL (60 mg) intravenously or intramuscularly - May be repeated every 12 hours. Relief may be maintained by one (100 mg) orphenadrine citrate tablet twice daily. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever the solution and container permit.
⛔ Contraindications ▾
CONTRAINDICATIONS Orphenadrine citrate is contraindicated in patients with glaucoma, pyloric or duodenal obstruction, stenosing peptic ulcers, prostatic hypertrophy or obstruction at the bladder neck, cardiospasm (megaesophagus) and myasthenia gravis. Orphenadrine citrate is contraindicated in patients who have demonstrated a previous hypersensitivity to the drug.
⚠️ Warnings ▾
WARNINGS Contains Sodium Metabisulfite, a sulfite that may cause allergic-type reactions including anaphylactic symptoms and life-threatening or less severe asthmatic episodes in certain susceptible people. The overall prevalence of sulfite sensitivity in the general population is unknown and probably low. Sulfite sensitivity is seen more frequently in asthmatic than in nonasthmatic people.
Some patients may experience transient episodes of lightheadedness, dizziness or syncope. Orphenadrine citrate may impair the ability of the patient to engage in potentially hazardous activities such as operating machinery or driving a motor vehicle; ambulatory patients should therefore be cautioned accordingly. Usage in Pregnancy: Safe use of orphenadrine citrate has not been established with respect to adverse effects upon fetal development.
Therefore, orphenadrine citrate should be used in women of childbearing potential and particularly during early pregnancy only when in the judgment of the physician the potential benefits outweigh the possible hazards. Usage in Children: Safety and effectiveness in children have not been established; therefore, this drug is not recommended for use in the pediatric age group.
🤒 Adverse Reactions ▾
ADVERSE REACTIONS Adverse effects of orphenadrine citrate are mainly due to the mild anticholinergic action, and are usually associated with higher dosage. Dryness of the mouth is usually the first adverse effect to appear. When the daily dose is increased, possible adverse effects include: tachycardia, palpitation, urinary hesitancy or retention, blurred vision, dilatation of pupils, increased ocular tension, weakness, nausea, vomiting, headache, dizziness, constipation, drowsiness, hypersensitivity reactions, pruritus, hallucinations, agitation, tremor, gastric irritation, and rarely urticaria and other dermatoses.
Infrequently, an elderly patient may experience some degree of mental confusion. These adverse reactions can usually be eliminated by reduction in dosage. Very rare cases of aplastic anemia associated with the use of orphenadrine tablets have been reported.
No causal relationship has been established. Rare instances of anaphylactic reaction have been reported associated with the intramuscular injection of orphenadrine citrate.
🧬 Clinical Pharmacology ▾
CLINICAL PHARMACOLOGY The mode of action has not been clearly identified but may be related to analgesic properties. Orphenadrine citrate possesses anticholinergic actions.
📦 How Supplied / Storage and Handling ▾
HOW SUPPLIED Orphenadrine Citrate Injection USP, 30 mg/mL is available in 2 mL ampules in cartons of 10. Store at 20º to 25ºC (68º to 77ºF) [See USP Controlled Room Temperature.] PROTECT FROM LIGHT. DO NOT USE IF PRECIPITATE OCCURS. Literature revised: July 2016 Product No.: 1108-82 Mfd. by: Hikma Farmaceutica (Portugal) S.A. 2705-906 Terrugem SNT, Portugal Dist. by: Actavis Pharma, Inc. Parsippany, NJ 07054 USA
📋 Description ▾
DESCRIPTION Orphenadrine Citrate Injection is a sterile aqueous solution of orphenadrine citrate. It is intended for intravenous or intramuscular administration. Orphenadrine citrate is the citrate salt of orphenadrine and occurs as a white, crystalline powder having a bitter taste.
It is practically odorless, sparingly soluble in water and slightly soluble in alcohol. It has the following structural formula: N,N-Dimethyl-2-[( o -methyl-α-phenylbenzyl)oxy]ethylamine Citrate (1:1). Each mL contains: Orphenadrine Citrate 30 mg, Sodium Metabisulfite 0.91 mg, Sodium Chloride 2.9 mg, in Water for Injection q.s.
Sodium Hydroxide and/or Hydrochloric Acid may have been used to adjust pH. structural formula for orphenadrine citrate