Methocarbamol 500 mg Tablet, 100-count
Other active recalls for Methocarbamol (different manufacturers) — 2 · tap to view
🆔 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
Methocarbamol is used with rest, physical therapy, and other measures to relax muscles and relieve pain and discomfort caused by strains, sprains, and other muscle injuries. Methocarbamol is in a class of medications called muscle relaxants. It works by slowing activity in the nervous system to allow the body to relax
Read the full MedlinePlus article ↗- Methocarbamol is a muscle relaxant that works through your central nervous system — your brain and spinal cord — rather than directly on the muscles themselves. It's thought to red...
- What exactly does methocarbamol do? Will it make my muscles stop hurting?
- You really should not. Methocarbamol already causes drowsiness and slows your central nervous system down. Adding alcohol on top of that significantly increases those effects — we'...
- Be careful, especially when you first start taking it. Methocarbamol can impair your alertness, coordination, and reaction time. Don't drive or operate heavy machinery until you kn...
Patient education
Supplement & herbal interactions
Some supplements/herbs that may interact with Methocarbamol — tap one for details:
Where does this data come from?
Ask a licensed pharmacist directly — free, answered by our team.
💊 What it looks like
Where does this data come from?
🧪 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 70097M6I30
Magnesium stearate is a salt made from magnesium and stearic acid, a fatty substance. It's used in tablets and capsules as a lubricant and glidant to help ingredients flow smoothly during manufacturing and prevent sticking.
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UNII RDH86HJV5Z
Povidone K90 is a synthetic polymer made from a chemical called vinyl pyrrolidone. It acts as a binder to hold pill ingredients together and as a dispersant to help the medicine break down and dissolve properly in your body.
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UNII ETJ7Z6XBU4
Silicon dioxide is a naturally occurring mineral used as a glidant and anti-caking agent. It helps powder ingredients flow smoothly and prevents clumping during manufacturing and storage.
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UNII 5856J3G2A2
A starch-based powder made from potatoes and processed with sodium. It acts as a disintegrant, helping the tablet or capsule break apart quickly in the stomach so the medicine can be absorbed.
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UNII O8232NY3SJ
A plant-based carbohydrate derived from corn kernels. It acts as a filler to add bulk, a binder to hold ingredients together, and a disintegrant to help the tablet break apart in your stomach for absorption.
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UNII 4ELV7Z65AP
Stearic acid is a fatty acid derived from plant or animal sources. It acts as a binder and lubricant in tablets and capsules, helping them hold together and flow smoothly during manufacturing.
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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.
7 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
Are inactive ingredients the same for every manufacturer?
Why might an inactive ingredient be missing?
Can inactive ingredients matter?
💲 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 ea | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | $0.040 | $3.97 / 100 tablets |
| Medicaid paysCMS SDUD · 12 mo | $0.1358 | $13.58 / 100 tablets |
| 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 |
|---|---|---|---|---|---|---|
| Methocarbamol 500 mg 00904-7057-61 | Major | 100 tablets | $0.040 | AA | Availability likely | — |
| Methocarbamol 500 mg 31722-0533-01 | Camber | 1200 tablets | $0.040 | AA | Availability likely | — |
| Methocarbamol 500 mg 43547-0405-10 | Solco | 100 tablets | $0.040 | AA | Availability likely | — |
| Methocarbamol 500 mg 50268-0520-15 | AvPAK | 50 tablets | $0.040 | AA | Availability likely | — |
| Methocarbamol 500 mg 59651-0340-01 | Aurobindo | 100 tablets | $0.040 | AA | Availability likely | — |
| Methocarbamol 500 mg 60687-0559-01 | American | 100 tablets | $0.040 | AA | Availability likely | — |
| Methocarbamol Tablets, USP, 500 mg 63561-0173-01 | Granulation | 100 tablets | $0.040 | AA | Availability likely | — |
| Methocarbamol 500 mgthis 69584-0611-10 | Oxford | 100 tablets | $0.040 | AA | Availability likely | — |
| Methocarbamol 500 mg 70010-0754-01 | Granules | 100 tablets | $0.040 | AA | Availability likely | — |
| Methocarbamol 500 mg 76385-0123-01 | UNICHEM | 100 tablets | $0.040 | AA | Availability likely | — |
| Methocarbamol 500 mg 00615-8506-05 | NCS | 15 tablets | — | AA | FDA listed | — |
| Methocarbamol Tablets, USP, 500 mg 10135-0722-01 | Marlex | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 15014-0910-10 | GENTEX | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 35561-0212-12 | Bostal | 100 tablets | — | AB | FDA listed | — |
| Methocarbamol 500 mg 43063-0903-18 | PD-Rx | 18 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 45865-0242-30 | Medsource | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 50090-0182-00 | A-S | 40 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 50090-0183-00 | A-S | 10 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 50090-0184-00 | A-S | 40 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 50090-3557-01 | A-S | 20 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 50090-3570-00 | A-S | 10 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 50090-3578-00 | A-S | 40 tablets | — | AA | Discontinued | — |
| Methocarbamol 500 mg 50090-3756-00 | A-S | 40 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 50090-4793-00 | A-S | 40 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 50090-5846-00 | A-S | 10 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 50090-5847-00 | A-S | 40 tablets | — | AA | Discontinued | — |
| Methocarbamol 500 mg 50090-5907-00 | A-S | 40 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 51407-0467-01 | Golden | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 51655-0195-51 | Northwind | 40 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 51655-0574-52 | Northwind | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 55154-2129-00 | Cardinal | 10 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 55154-2334-00 | Cardinal | 10 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 55700-0890-60 | Quality | 60 tablets | — | AA | Discontinued | — |
| Methocarb 500-EZS 59088-0724-00 | PureTek | 100 tablets | — | — | FDA listed | — |
| Methocarbamol 500 mg 60760-0592-90 | St. | 90 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 61919-0368-07 | DIRECT | 7 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 62207-0754-41 | Granules | 24 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 63187-0087-00 | Proficient | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 63629-1123-01 | Bryant | 500 tablets | — | — | FDA listed | — |
| Methocarbamol 500 mg 63629-1622-00 | Bryant | 15 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 63629-2417-01 | Bryant | 500 tablets | — | AA | Discontinued | — |
| Methocarbamol 500 mg 63629-2418-01 | Bryant | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 63629-4882-01 | Bryant | 60 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 63629-9288-01 | Bryant | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 67046-0538-03 | Coupler | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 67296-1435-01 | Redpharm | 15 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 67296-2193-01 | Redpharm | 15 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 67296-2197-01 | Redpharm | 15 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 68071-3636-06 | NuCare | 6 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 68071-4520-02 | NuCare | 20 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 68788-7973-03 | Preferred | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 68788-8213-03 | Preferred | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 68788-8822-01 | Preferred | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 68788-8867-03 | Preferred | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 68788-8880-03 | Preferred | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 69306-0500-01 | Doc | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 69306-0510-01 | Doc | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 70518-1723-03 | REMEDYREPACK | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 70518-4603-00 | REMEDYREPACK | 40 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 70868-0910-10 | Key | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 71205-0103-20 | Proficient | 20 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 71205-0167-30 | Proficient | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 71205-0375-20 | Proficient | 20 tablets | — | — | FDA listed | — |
| Methocarbamol 500 mg 71335-0970-00 | Bryant | 15 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 71335-1795-00 | Bryant | 15 tablets | — | — | FDA listed | — |
| Methocarbamol 500 mg 71335-2383-00 | Bryant | 15 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 71335-2794-00 | Bryant | 15 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 71335-3105-01 | Bryant | 60 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 71610-0599-30 | Aphena | 30 tablets | — | — | FDA listed | — |
| Methocarbamol 500 mg 71610-0832-30 | Aphena | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 72162-1363-01 | Bryant | 100 tablets | — | — | FDA listed | — |
| Methocarbamol 500 mg 72162-1929-01 | Bryant | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol Tablets, USP, 500 mg 72162-2487-01 | Bryant | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 72189-0284-30 | DirectRx | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 72189-0665-30 | Direct_rx | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 72789-0012-18 | PD-Rx | 18 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 72789-0021-01 | PD-Rx | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 72789-0110-40 | PD-Rx | 40 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 72789-0397-01 | PD-Rx | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 72789-0428-18 | PD-Rx | 18 tablets | — | AA | FDA listed | — |
| Methocarbamol Tablets, USP, 500 mg 72789-0481-01 | PD-Rx | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol Tablets, USP, 500 mg 72789-0499-18 | PD-Rx | 18 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 72865-0233-01 | XLCare | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 76420-0626-01 | Asclemed | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 76420-0667-01 | Asclemed | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 76420-0893-01 | Asclemed | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 80425-0138-01 | Advanced | 60 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 80425-0275-01 | Advanced | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 80425-0283-01 | Advanced | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 80425-0577-01 | Advanced | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 80425-0578-01 | Advanced | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 80425-0579-01 | Advanced | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 82804-0121-30 | Proficient | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 82804-0273-30 | Proficient | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 82804-0954-00 | Proficient | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 85509-1910-01 | PHOENIX | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 85509-2910-01 | PHOENIX | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 87063-0040-01 | Asclemed | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 87063-0135-01 | ASCLEMED | 100 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 85534-0021-00 | HAWAII | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 87441-0057-01 | Unit | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 85534-0057-00 | HAWAII | 30 tablets | — | AA | FDA listed | — |
| Methocarbamol Tablets, USP, 500 mg 72789-0581-40 | PD-Rx | 40 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 82461-0722-90 | Medcore | 90 tablets | — | AA | FDA listed | — |
| Methocarbamol 500 mg 67046-1177-03 | Coupler | 30 tablets | — | AA | 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
💊 Medicaid utilization by pack size
📊 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 | Per unit | Per pack | Marketing start | Status |
|---|---|---|---|---|---|
| 69584-0611-09 | 90 TABLET in 1 BOTTLE (69584-611-09) | — | — | 2019-08-15 | Active |
| 69584-0611-10 You're viewing this | 100 TABLET in 1 BOTTLE (69584-611-10) | $0.0397 / ea | $3.97 | 2019-08-15 | Active |
| 69584-0611-50 | 500 TABLET in 1 BOTTLE (69584-611-50) | $0.0397 / ea | $19.85 | 2019-08-15 | Active |
| 69584-0611-90 | 1000 TABLET in 1 BOTTLE (69584-611-90) | $0.0397 / ea | $39.70 | 2019-08-15 | Active |
You're viewing one of 4 pack sizes for this product.
This pack has the lowest per-ea cost of the 3 priced pack sizes ($0.0397 NADAC).
This pack accounts for about 20% of this product's recent Medicaid fills; most go to the 500 tablets pack. See all packs ↓
Pack size FAQ
What quantity is in NDC 69584-0611-10?
What is the difference between NDC 69584-0611-10 and NDC 69584-0611-09?
What NDC number is used to bill for this package of Methocarbamol 500 mg Tablet?
Prices are the latest CMS NADAC pharmacy acquisition cost per NDC; per-pack figures are per-unit × pack quantity, shown only when the pack is denominated in the same measure NADAC prices.
📄 Full prescribing information FDA SPL
🎯 Indications and Usage ▾
INDICATIONS AND USAGE Methocarbamol is indicated as an adjunct to rest, physical therapy, and other measures for the relief of discomfort associated with acute, painful musculoskeletal conditions. The mode of action of methocarbamol has not been clearly identified, but may be related to its sedative properties. Methocarbamol does not directly relax tense skeletal muscles in man.
⏱️ Dosage and Administration ▾
DOSAGE AND ADMINISTRATION Methocarbamol, 500 mg — Adults: Initial dosage: 3 tablets q.i.d. Maintenance dosage: 2 tablets q.i.d. Methocarbamol, 750 mg — Adults: Initial dosage: 2 tablets q.i.d. Maintenance dosage: 1 tablet q.4h. or 2 tablets t.i.d. Six grams a day are recommended for the first 48 to 72 hours of treatment. (For severe conditions 8 grams a day may be administered). Thereafter, the dosage can usually be reduced to approximately 4 grams a day.
⛔ Contraindications ▾
CONTRAINDICATIONS Methocarbamol is contraindicated in patients hypersensitive to methocarbamol or to any of the tablet components.
⚠️ Warnings ▾
WARNINGS Since methocarbamol may possess a general CNS depressant effect, patients receiving methocarbamol tablets should be cautioned about combined effects with alcohol and other CNS depressants. Safe use of methocarbamol has not been established with regard to possible adverse effects upon fetal development. There have been reports of fetal and congenital abnormalities following in utero exposure to methocarbamol.
Therefore, methocarbamol tablets should not be used in women who are or may become pregnant and particularly during early pregnancy unless in the judgment of the physician the potential benefits outweigh the possible hazards (see PRECAUTIONS, Pregnancy ) . Use in Activities Requiring Mental Alertness Methocarbamol may impair mental and/or physical abilities required for performance of hazardous tasks, such as operating machinery or driving a motor vehicle. Patients should be cautioned about operating machinery, including automobiles, until they are reasonably certain that methocarbamol therapy does not adversely affect their ability to engage in such activities.
🤒 Adverse Reactions ▾
ADVERSE REACTIONS Adverse reactions reported coincident with the administration of methocarbamol include: Body as a whole: Anaphylactic reaction, angioneurotic edema, fever, headache Cardiovascular system: Bradycardia, flushing, hypotension, syncope, thrombophlebitis Digestive system: Dyspepsia, jaundice (including cholestatic jaundice), nausea and vomiting Hemic and lymphatic system: Leukopenia Immune system: Hypersensitivity reactions Nervous system: Amnesia, confusion, diplopia, dizziness or lightheadedness, drowsiness, insomnia, mild muscular incoordination, nystagmus, sedation, seizures (including grand mal), vertigo Skin and special senses: Blurred vision, conjunctivitis, nasal congestion, metallic taste, pruritus, rash, urticaria
🔄 Drug Interactions ▾
Drug Interactions See WARNINGS and PRECAUTIONS for interaction with CNS drugs and alcohol. Methocarbamol may inhibit the effect of pyridostigmine bromide. Therefore, methocarbamol should be used with caution in patients with myasthenia gravis receiving anticholinesterase agents.
🔄 Drug / Laboratory Test Interactions ▾
Drug/Laboratory Test Interactions Methocarbamol may cause a color interference in certain screening tests for 5-hydroxyindoleacetic acid (5-HIAA) using nitrosonaphthol reagent and in screening tests for urinary vanillylmandelic acid (VMA) using the Gitlow method.
👥 Use in Specific Populations ▾
Special populations Elderly The mean (± SD) elimination half-life of methocarbamol in elderly healthy volunteers (mean [± SD] age, 69 [± 4] years) was slightly prolonged compared to a younger (mean [± SD] age, 53.3 [± 8.8] years), healthy population (1.5 [±0.4] hours versus 1.1 [± 0.27] hours, respectively). The fraction of bound methocarbamol was slightly decreased in the elderly versus younger volunteers (41 to 43% versus 46 to 50%, respectively). Renally impaired The clearance of methocarbamol in 8 renally-impaired patients on maintenance hemodialysis was reduced about 40% compared to 17 normal subjects, although the mean (± SD) elimination half-life in these two groups was similar: 1.2 (± 0.6) versus 1.1 (± 0.3) hours, respectively.
Hepatically impaired In 8 patients with cirrhosis secondary to alcohol abuse, the mean total clearance of methocarbamol was reduced approximately 70% compared to that obtained in 8 age- and weight-matched normal subjects. The mean (± SD) elimination half-life in the cirrhotic patients and the normal subjects was 3.38 (±1.62) hours and 1.11 (± 0.27) hours, respectively. The percent of methocarbamol bound to plasma proteins was decreased to approximately 40 to 45% compared to 46 to 50% in the normal subjects.
🤰 Pregnancy ▾
Pregnancy Teratogenic Effects – Pregnancy Category C Animal reproduction studies have not been conducted with methocarbamol. It is also not known whether methocarbamol can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Methocarbamol should be given to a pregnant woman only if clearly needed.
Safe use of methocarbamol has not been established with regard to possible adverse effects upon fetal development. There have been reports of fetal and congenital abnormalities following in utero exposure to methocarbamol. Therefore, methocarbamol should not be used in women who are or may become pregnant and particularly during early pregnancy unless in the judgment of the physician the potential benefits outweigh the possible hazards (see WARNINGS ).
🧒 Pediatric Use ▾
Pediatric Use Safety and effectiveness of methocarbamol in pediatric patients below the age of 16 have not been established.
🆘 Overdosage ▾
OVERDOSAGE Limited information is available on the acute toxicity of methocarbamol. Overdose of methocarbamol is frequently in conjunction with alcohol or other CNS depressants and includes the following symptoms: nausea, drowsiness, blurred vision, hypotension, seizures, and coma. In post-marketing experience, deaths have been reported with an overdose of methocarbamol alone or in the presence of other CNS depressants, alcohol or psychotropic drugs.
Treatment Management of overdose includes symptomatic and supportive treatment. Supportive measures include maintenance of an adequate airway, monitoring urinary output and vital signs, and administration of intravenous fluids if necessary. The usefulness of hemodialysis in managing overdose is unknown.
🧬 Clinical Pharmacology ▾
CLINICAL PHARMACOLOGY The mechanism of action of methocarbamol in humans has not been established, but may be due to general central nervous system (CNS) depression. It has no direct action on the contractile mechanism of striated muscle, the motor end plate or the nerve fiber. Pharmacokinetics In healthy volunteers, the plasma clearance of methocarbamol ranges between 0.20 and
0.80L/h/kg, the mean plasma elimination half-life ranges between 1 and 2 hours, and the plasma protein binding ranges between 46% and 50%. Methocarbamol is metabolized via dealkylation and hydroxylation. Conjugation of methocarbamol also is likely.
Essentially all methocarbamol metabolites are eliminated in the urine. Small amounts of unchanged methocarbamol also are excreted in the urine. Special populations Elderly The mean (± SD) elimination half-life of methocarbamol in elderly healthy volunteers (mean [± SD] age, 69 [± 4] years) was slightly prolonged compared to a younger (mean [± SD] age, 53.3 [± 8.8] years), healthy population (1.5 [±0.4] hours versus 1.1 [± 0.27] hours, respectively).
The fraction of bound methocarbamol was slightly decreased in the elderly versus younger volunteers (41 to 43% versus 46 to 50%, respectively). Renally impaired The clearance of methocarbamol in 8 renally-impaired patients on maintenance hemodialysis was reduced about 40% compared to 17 normal subjects, although the mean (± SD) elimination half-life in these two groups was similar: 1.2 (± 0.6) versus 1.1 (± 0.3) hours, respectively. Hepatically impaired In 8 patients with cirrhosis secondary to alcohol abuse, the mean total clearance of methocarbamol was reduced approximately 70% compared to that obtained in 8 age- and weight-matched normal subjects.
The mean (± SD) elimination half-life in the cirrhotic patients and the normal subjects was 3.38 (±1.62) hours and 1.11 (± 0.27) hours, respectively. The percent of methocarbamol bound to plasma proteins was decreased to approximately 40 to 45% compared to 46 to 50% in the normal subjects.
📦 How Supplied / Storage and Handling ▾
HOW SUPPLIED Methocarbamol Tablets, USP 500 mg — white, round, convex face, debossed “611” over bisect and “O” below bisect on one side and plain on the reverse side. Available in: Bottles of 90, NDC number 69584-611-09 bottles of 100, NDC number 69584-611-10 bottles of 500, NDC number 69584-611-50 bottles of 1000, NDC number 69584-611-90 Methocarbamol Tablets, USP 750 mg — white, capsule shape, convex face, debossed “612” on one side and debossed “O” on the reverse side. Available in: bottles of 90, NDC number 69584-612-09 bottles of 100, NDC number 69584-612-10 bottles of 500, NDC number 69584-612-50 bottles of 1000, NDC number 69584-612-90 Store at 20°– 25°C (68°– 77°F) [See USP Controlled Room Temperature].
Dispense in tight container. For more information, call Oxford Pharmaceuticals, LLC at 1-844-508‑1455, 8:00 AM to
4.30PM ET, Monday – Friday Manufactured by: OXFORD PHARMACEUTICALS Birmingham, AL 35211 8200004 Rev 12/20 R01
📋 Description ▾
DESCRIPTION Methocarbamol Tablets, USP, 500 mg and 750 mg, a carbamate derivative of guaifenesin, is a central nervous system (CNS) depressant with sedative and musculoskeletal relaxant properties. The chemical name of methocarbamol is 3-(2-methoxyphenoxy)-1, 2-propanediol 1-carbamate and has the empirical formula C 11 H 15 NO 5 . Its molecular weight is 241.24.
The structural formula is shown below. Methocarbamol is a white powder, sparingly soluble in water and chloroform, soluble in alcohol (only with heating) and propylene glycol, and insoluble in benzene and n -hexane. Each tablet, for oral administration, contains either 500 mg or 750 mg of methocarbamol, USP.
The inactive ingredients present are colloidal silicon dioxide, magnesium stearate, povidone, pregelatinized corn starch, purified water, sodium starch glycolate, and stearic acid. str
💬 Information for Patients ▾
Information for Patients Patients should be cautioned that methocarbamol may cause drowsiness or dizziness, which may impair their ability to operate motor vehicles or machinery. Because methocarbamol may possess a general CNS-depressant effect, patients should be cautioned about combined effects with alcohol and other CNS depressants.