Meprobamate is a white powder with a characteristic odor and a bitter taste. It is slightly soluble in water, freely soluble in acetone and alcohol, and sparingly soluble in ether. The structural formula of meprobamate is: C 9 H 18 N 2 O 4 M.W.218.25 Meprobamate Tablets USP 200 mg and 400 mg for oral administration contain the following inactive ingredients: microcrystalline cellulose,sodium starch glycolate, pre-gelatinized starch, colloidal silicondioxide, stearic acid and magnesium stearate. STRUCTURE.jpg

Can you take meprobamate with other medicines?

It depends on the medicine. We check it against the FDA labels rather than guessing: our interaction checker searches each drug's own label for the other and quotes what it says, naming the section it came from. Run meprobamate against whatever else you take — and remember that a label not naming a drug is not the same as that combination being safe.

What brand names is meprobamate sold under?

We track 5 meprobamate-containing products in the U.S.: Mepriam, Equanil, Meprobamate, Miltown and Tranmep. They are the same active ingredient; they differ in form, manufacturer, price and FDA recall record.

What forms does meprobamate come in?

Across the brands we track, meprobamate is currently marketed as tablet and capsule, per the FDA's National Drug Code Directory. Each form is dosed differently — follow the label for the exact product you were prescribed.

Is there a generic meprobamate?

Yes. Our catalog lists 1 generic meprobamate product alongside the brand versions. A generic has the same active ingredient and must meet the FDA's bioequivalence standard; it usually costs less. Ask your pharmacist which one your plan covers.

Meprobamate: uses, dosing, side effects & brands

Meprobamate is a medicine sold in the U.S. under 5 brand and generic names, for anxiety disorders, headache and muscle rigidity. Below: what the FDA label says, every product that contains it, what the pills look like, and its recall record.

By the pharmaranks editorial teamReviewed against the FDA (openFDA label, NDC Directory & Enforcement) sourcesHow we research

Key facts

Treats: Anxiety Disorders, Headache and Muscle Rigidity
Available as: Tablet · Capsule
Sold as: 5 products — Mepriam, Equanil and Meprobamate, and others
Prescription?: Prescription only
Generic available?: Yes
Typical price: about $162 for a 30-count supply

How meprobamate is dosed

From the FDA label for Mepriam (application NDA016069). Other meprobamate products — different forms, different strengths — are dosed differently. Follow the label for the one you were prescribed.

Meprobamate Tablets USP: The usual adult daily dosage is 1200 mg to 1600 mg, in three or four divided doses; a daily dosage above 2400mg is not recommended. The usual daily dosage for children ages six to twelve years is 200 mg to 600 mg, in two or three divided doses. Not recommended for children under age 6 (see Usage in Children).

Meprobamate side effects

Central Nervous System Drowsiness, ataxia, dizziness, slurred speech, headache, vertigo,weakness, paresthesias, impairment of visual accommodation,euphoria, overstimulation, paradoxical excitement, fast EEG activity. Gastrointestinal Nausea, vomiting, diarrhea. Cardiovascular Palpitation, tachycardia, various forms of arrhythmia, transient ECG changes, syncope; also hypotensive crisis (including one fatal case). Allergic or Idiosyncratic Allergic or idiosyncratic reactions are usually seen within the period of the first to fourth dose in patients having had no previous contact with the drug. Milder reactions are characterized by an itchy, urticarial, or erythematous maculopapular rash which may be generalized or confined to the groin. Other reactions have included leukopenia, acute nonthrombocytopenic purpura, petechiae, ecchymoses, eosinophilia,peripheral edema, adenopathy, fever, fixed drug eruption with cross reaction to carisoprodol, and cross sensitivity between meprobamate/mebutamate and meprobamate/carbromal. More severe hypersensitivity reactions, rarely reported, include hyperpyrexia, chills, angioneurotic edema, bronchospasm, oliguria and anuria. Also, anaphylaxis, erythema multiforme, exfoliative dermatitis, stomatitis, proctitis, Stevens-Johnson syndrome and bullous dermatitis, including one fatal case of the latter following administration of meprobamate in…

Who shouldn’t take meprobamate

Acute intermittent porphyria as well as allergic or idiosyncratic reactions to meprobamate or related compounds such as carisoprodol, mebutamate, tybamate, or carbromal.

Every meprobamate product we track (5)

Same active ingredient — different manufacturer, form, price and FDA recall record. That last one is what our independent score measures.

Meprobamate products
#	Drug	Rating	Type	Form	Generic?	Typical price
1	Mepriam	46/100	Prescription	Tablet	Generic	$162	View →
2	Equanil	Not yet rated	Prescription	Tablet	Generic	$162

What meprobamate pills look like

Imprint codes, colour and shape from the FDA’s labelling data. Match the imprint on your pill — or search any imprint.

Meprobamate pill imprints
Imprint	Strength	Colour	Shape	Maker
L;125	200 mg	white	round	—
L;105	400 mg	white	round	—
L125	200 mg	white	round	—
L105	400 mg	white	round	—
I;7	200 mg	white	round	—
I;4	400 mg	white

Combination products containing meprobamate

A combination is a different drug — different dosing, different warnings. It is listed here so you can find it, not so you can substitute it.

Frequently asked questions

What is meprobamate?: Meprobamate is a white powder with a characteristic odor and a bitter taste. It is slightly soluble in water, freely soluble in acetone and alcohol, and sparingly soluble in ether. The structural formula of meprobamate is: C 9 H 18 N 2 O 4 M.W.218.25 Meprobamate Tablets USP 200 mg and 400 mg for oral administration contain the following inactive ingredients: microcrystalline cellulose,sodium starch glycolate, pre-gelatinized starch, colloidal silicondioxide, stearic acid and magnesium stearate. STRUCTURE.jpg
Can you take meprobamate with other medicines?: It depends on the medicine. We check it against the FDA labels rather than guessing: our interaction checker searches each drug's own label for the other and quotes what it says, naming the section it came from. Run meprobamate against whatever else you take — and remember that a label not naming a drug is not the same as that combination being safe.
What brand names is meprobamate sold under?: We track 5 meprobamate-containing products in the U.S.: Mepriam, Equanil, Meprobamate, Miltown and Tranmep. They are the same active ingredient; they differ in form, manufacturer, price and FDA recall record.
What forms does meprobamate come in?: Across the brands we track, meprobamate is currently marketed as tablet and capsule, per the FDA's National Drug Code Directory. Each form is dosed differently — follow the label for the exact product you were prescribed.
Is there a generic meprobamate?: Yes. Our catalog lists 1 generic meprobamate product alongside the brand versions. A generic has the same active ingredient and must meet the FDA's bioequivalence standard; it usually costs less. Ask your pharmacist which one your plan covers.

Sources: FDA openFDA drug label, National Drug Code Directory, and Enforcement (recall) database. This page reproduces public FDA data and is not medical advice. Dosing is set by your prescriber.