Methocarbamol Injection – Veterinary Muscle Relaxant & Pain Relief

Methocarbamol Injection is a centrally acting muscle relaxant used in both human and veterinary medicine to treat muscle spasms, stiffness, and pain associated with musculoskeletal disorders. In veterinary care, it is especially valuable for horses, dogs, and cats suffering from acute injuries, tetanus-related spasms, or back pain.

Composition

Active Ingredient: Methocarbamol

Concentration: Typically 100 mg/mL or 500 mg/5 mL depending on brand

Formulation: Sterile injectable solution

Packaging: Multi-dose vials Methocarbamol Injection

Mechanism of Action

Methocarbamol works on the central nervous system (CNS) to depress nerve transmission in the spinal cord, reducing muscle hyperactivity.

It does not act directly on the muscles, allowing relaxation without impairing normal muscle function.

Often used alongside NSAIDs or corticosteroids to improve mobility and comfort.

Indications & Veterinary Uses

Methocarbamol Injection is indicated for:

Acute muscle spasms due to injury or trauma

Tetanus-related muscle rigidity

Skeletal muscle inflammation (myositis)

Post-surgical muscle pain

Neuromuscular disorders in horses and small animals

Equine back pain and tying-up (exertional rhabdomyolysis)

Methocarbamol Injection Dosage & Administration

(Dosage varies by species and severity – veterinary supervision required)

Horses: 2–4 g IV slowly; may repeat as needed

Dogs & Cats: 20–50 mg/kg IV slowly, can repeat every 6–8 hours

Route: Intravenous (preferred for rapid effect); intramuscular possible but less common

Adjust based on animal’s condition, weight, and response

Key Benefits

Rapid muscle relaxation in cases of spasm or stiffness

Reduces pain and discomfort in musculoskeletal injuries

Useful in emergency care for tetanus or severe cramping

Can be combined with painkillers and anti-inflammatories for enhanced results

Allows faster recovery and improved mobility

Possible Side Effects

Sedation or drowsiness

Ataxia (uncoordinated movement)

Low blood pressure (rare)

Injection site swelling or irritation

Allergic reactions (uncommon) Methocarbamol Injection

Contraindications & Warnings

Avoid use in animals with known hypersensitivity to methocarbamol

Use cautiously in animals with liver or kidney impairment

Do not mix with other drugs in the same syringe unless compatible

Not for use in food-producing animals unless permitted by regulations

Storage & Handling

Store at controlled room temperature (15–30°C)

Protect from light

Use only under licensed veterinary guidance Methocarbamol Injection

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