What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.

Robaxacet Extra Strength


Robaxacet Extra Strength

Prescription Required

400mg Methocarbamol / 500mg Acetaminophen

You'll have option to make 4 interest-free payments by credit card once your order is confirmed using Sezzle

Generic Equivalent - Robaxacet Extra Strength

Prescription Required

400mg Methocarbamol / 500mg Acetaminophen

You'll have option to make 4 interest-free payments by credit card once your order is confirmed using Sezzle

  • Product Details


    Robaxacet Extra Strength contains acetaminophen and methocarbamol to treat pain caused by muscle spasms, including back pain, tense neck muscles, sprains, and strains.

    Robaxacet Extra Strength comes in a caplet that contains 500 mg of acetaminophen and 400 mg of methocarbamol.

    Fact Table


    Methocarbamol: C11H15NO5 Acetaminophen (Paracetamol): C8H9NO2


    US DailyMed, US FDA


    Methocarbamol: 50.7 to 124 percent, Acetaminophen: 63–89%

    Legal status


    Chemical Name


    Elimination half-life

    Methocarbamol: 1-2 hours Acetaminophen: 1-4 hours

    Dosage (Strength)

    400mg Methocarbamol / 500mg Acetaminophen


    Consult doctor


    Robaxacet Extra Strength

    Protein binding

    Methocarbamol: ~46-50% Acetaminophen: 10-25%

    PubChem CID

    Methocarbamol: 4107 Acetaminophen: 1983


    Methocarbamol: a682579 Acetaminophen: a681004


    Methocarbamol: 6832 Acetaminophen: 46195

    ATC code

    Methocarbamol: M03BA03 Acetaminophen: N02BE01


    Methocarbamol: DB00423 Acetaminophen: DB00316


    Methocarbamol: D00402 Acetaminophen: D00217

    Routes of administration

    By mouth


    Take Robaxacet Extra Strength as your doctor has prescribed. If you have any questions or concerns, tell your doctor or pharmacist. 

    Robaxacet Extra Strength dose: Adults and children who are at least 12 years old are recommended to take two caplets by mouth every six hours. No more than eight caplets should be taken within 24 hours.


    Robaxacet Extra Strength contains acetaminophen and methocarbamol. Inactive ingredients include corn starch, crospovidone, D and C Yellow No. 10, FD and C Blue No. 1, hypromellose, magnesium stearate, methylcellulose, polyethylene glycol, povidone, pregelatinized starch, silicon dioxide, sodium lauryl sulfate, sodium starch glycolate, and stearic acid.


    Do not take Robaxacet Extra Strength if you are allergic to acetaminophen, methocarbamol, or any of the medication's components.

    Do not take Robaxacet Extra Strength with other medications that contain acetaminophen or methocarbamol. If you do not know whether or not you are taking acetaminophen- or methocarbamol-containing medications, ask your doctor or pharmacist.


    • Before you begin treatment with Robaxacet Extra Strength, tell your doctor about:
      • All the medications you take
      • Your allergies
      • Your health history and current medical problems
      • Your pregnancy or breastfeeding status
    • Robaxacet Extra Strength contains acetaminophen, which can cause severe or fatal liver damage if you:
      • take more than the recommended dose in 24 hours
      • take it with other acetaminophen-containing medications
      • take it with three or more alcoholic beverages daily

    Liver damage may cause yellow skin or whites of the eyes, dark urine, sweating,

    nausea, vomiting, stomach pain, tiredness, or loss of appetite. Seek emergency 

    care right away if you experience any of these effects.

    • Do not drive or operate machinery until you know how Robaxacet Extra Strength affects you.
    • Keep Robaxacet Extra Strength away from children.

    Side Effects

    Robaxacet Extra Strength side effects include but are not limited to drowsiness, dizziness, nausea, or light-headedness. If you have any side effects that are bothersome or persistent, contact your doctor immediately.


    Robaxacet Extra Strength. Pfizer Consumer Healthcare; 2020.

    IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.

    Product Code : 24

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