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Name:Ergoloid Mesylates
Manufacturer:Mutual Pharmaceutical Co., Inc.
Category:Prescription Marketed Drugs


ERGOLOID MESYLATES - ergoloid mesylates tablet 




Rx only


Each tablet for oral use contains ergoloid mesylates USP; a mixture of the methanesulfonate salt of the following hydrogenated alkaloids:

Chemical Structure
Dihydroergocornine -CH(CH3)2
Dihydroergocristine -CH2C6H5
Dihydro-α-ergocryptine -CH2CH(CH3)2
Dihydro-β-ergocryptine -CH(CH3)CH2CH3

C31H41N5O5 • CH4O3S (dihydroergocornine mesylate)


C35H41N5O5 • CH4O3S (dihydroergocristine mesylate)


C32H43N5O5 • CH4O3S (dihydro-α-ergocryptine mesylate)


C32H43N5O5 • CH4O3S (dihydro-β-ergocryptine mesylate)


exists as a mixture of alpha and beta isomers in a ratio of 2:1
1 mg
Dihydroergocristine mesylate 0.333 mg
Dihydroergocornine mesylate 0.333 mg
Dihydroergocryptine mesylate* 0.333 mg

Inactive ingredients for oral tablets are: butylated hydroxyanisol, hydrogenated vegetable oil, lactose, mannitol, polyvinyl pyrrollidone, corn starch, stearic acid and talc.

Pharmacokinetic Properties

Pharmacokinetic studies have been performed in normal volunteers with the help of radiolabelled drug as well as employing a specific radioimmunoassay technique. From the urinary excretion quotient of orally and intravenously administered tritium-labelled ergoloid mesylates the absorption of ergoloid was calculated to be 25%. Following oral administration, peak levels of 0.5 ngEq/mL/mg were achieved within 1.5–3 hr. Bioavailability studies with the specific radioimmunoassay confirm that ergoloid is rapidly absorbed from the gastrointestinal tract, with mean peak levels of 0.05–0.13 ng/mL/mg (with extremes of 0.03 and 0.18 ng/mL/mg) achieved within 0.6–1.3 hr (with extremes of 0.4 and 2.8 hr). The finding of lower peak levels of ergoloid compared to the total drug-metabolite composite is consistent with a considerable first pass liver metabolism, with less than 50% of the therapeutic moiety reaching the systemic circulation. The elimination of radioactivity, representing ergoloid plus metabolites bearing the radiolabel, was biphasic with half-lives of 4 and 13 hr. The mean half-life of unchanged ergoloid in plasma is about 2.6–5.1 hr; after 3 half-lives ergoloid plasma levels are less than 10% of radioactivity levels, and by 24 hr no ergoloid is detectable.

Bioequivalence studies were performed comparing ergoloid mesylates oral tablets (administered orally) with ergoloid mesylates sublingual tablets (administered sublingually). The oral tablet and sublingual tablet were shown to be bioequivalent.


There is no specific evidence which clearly establishes the mechanism by which ergoloid mesylates preparations produce mental effects, nor is there conclusive evidence that the drug particularly affects cerebral arteriosclerosis or cerebrovascular insufficiency.


A proportion of individuals over sixty who manifest signs and symptoms of an idiopathic decline in mental capacity (i.e., cognitive and interpersonal skills, mood, self-care, apparent motivation) can experience some symptomatic relief upon treatment with ergoloid mesylates preparations. The identity of the specific trait(s) or condition(s), if any, which would usefully predict a response to ergoloid mesylates therapy is not known. It appears, however, that those individuals who do respond come from groups of patients who would be considered clinically to suffer from some ill-defined process related to aging or to have some underlying dementing condition (i.e., primary progressive dementia, Alzheimer's dementia, senile onset, multi-infarct dementia).

Before prescribing ergoloid mesylates, the physician should exclude the possibility that the patient's signs and symptoms arise from a potentially reversible and treatable condition. Particular care should be taken to exclude delirium and dementiform illness secondary to systemic disease, primary neurological disease, or primary disturbance of mood. Ergoloid mesylates preparations are not indicated in the treatment of acute or chronic psychosis, regardless of etiology (see CONTRAINDICATIONS).

The decision to use ergoloid mesylates in the treatment of an individual with a symptomatic decline in mental capacity of unknown etiology should be continually reviewed since the presenting clinical picture may subsequently evolve sufficiently to allow a specific diagnosis and a specific alternative treatment. In addition, continued clinical evaluation is required to determine whether any initial benefit conferred by ergoloid mesylates therapy persists with time.

The efficacy of ergoloid mesylates was evaluated using a special rating scale known as the SCAG (Sandoz Clinical Assessment-Geriatric). The specific items on this scale on which modest but statistically significant changes were observed at the end of twelve weeks include: mental alertness, confusion, recent memory, orientation, emotional lability, self-care, depression, anxiety/fears, cooperation, sociability, appetite, dizziness, fatigue, bothersome(ness), and an overall impression of clinical status.


Ergoloid mesylates preparations are contraindicated in individuals who have previously shown hypersensitivity to the drug. Ergoloid mesylates preparations are also contraindicated in patients who have psychosis, acute or chronic, regardless of etiology.


Practitioners are advised that because the target symptoms are of unknown etiology, careful diagnosis should be attempted before prescribing ergoloid mesylates preparations.


Ergoloid mesylates preparations have not been found to produce serious side effects. Transient nausea and gastric disturbances have been reported. Ergoloid mesylates preparations do not possess the vasoconstrictor properties of the natural ergot alkaloids.


1 mg three times a day.

Alleviation of symptoms is usually gradual and results may not be observed for 3–4 weeks.


Ergoloid mesylates tablets, USP (oral) 1 mg are white, round, unscored, debossed MP 20

Bottles of 50 NDC 53489-281-02
Bottles of 100 NDC 53489-281-01
Bottles of 250 NDC 53489-281-03
Bottles of 500 NDC 53489-281-05
Bottles of 1000 NDC 53489-281-10

Store at 20° to 25°C (68° to 77°F).
[See USP Controlled Room Temperature]


Manufactured by:
Philadelphia, Pa 19124 USA

Revised: January 2008Ch

ergoloid mesylates tablet
Product Information
Product Type HUMAN PRESCRIPTION DRUG Item Code (Source) NDC:53489-281
Route of Administration ORAL DEA Schedule     
Name (Active Moiety) Type Strength
Ergoloid Mesylates (ergoloids) Active 1 MILLIGRAM  In 1 TABLET
butylated hydroxyanisol Inactive  
corn starch Inactive  
hydrogenated vegetable oil Inactive  
lactose Inactive  
mannitol Inactive  
polyvinyl pyrrollidone Inactive  
stearic acid Inactive  
talc Inactive  
Product Characteristics
Color white Score no score
Shape ROUND Size 8mm
Flavor Imprint Code MP;20
Coating false Symbol false
# Item Code Package Description Multilevel Packaging
1 53489-281-02 50 TABLET In 1 BOTTLE, PLASTIC None
2 53489-281-01 100 TABLET In 1 BOTTLE, PLASTIC None
3 53489-281-03 250 TABLET In 1 BOTTLE, PLASTIC None
4 53489-281-05 500 TABLET In 1 BOTTLE, PLASTIC None
5 53489-281-10 1000 TABLET In 1 BOTTLE, PLASTIC None


Reproduced with permission of U.S. National Library of Medicine

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