Mefloquine Hydrochloride

Mefloquine Hydrochloride

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Questions & Answers

Side Effects & Adverse Reactions

In case of life-threatening, serious or overwhelming malaria infections due to P. falciparum, patients should be treated with an intravenous antimalarial drug. Following completion of intravenous treatment, mefloquine may be given to complete the course of therapy.

Halofantrine should not be administered with mefloquine or within 15 weeks of the last dose of mefloquine due to the risk of a potentially fatal prolongation of the QTc interval (see CLINICAL PHARMACOLOGY: Pharmacokinetics: Elimination).

Ketoconazole should not be administered with mefloquine or within 15 weeks of the last dose of mefloquine due to the risk of a potentially fatal prolongation of the QTc interval. Ketoconazole increases plasma concentrations and elimination half-life of mefloquine following co-administration (see CLINICAL PHARMACOLOGY: Pharmacokinetics: Elimination and PRECAUTIONS: Drug Interactions).

Mefloquine may cause psychiatric symptoms in a number of patients, ranging from anxiety, paranoia, and depression to hallucinations and psychotic behavior. On occasions, these symptoms have been reported to continue long after mefloquine has been stopped. Rare cases of suicidal ideation and suicide have been reported though no relationship to drug administration has been confirmed. To minimize the chances of these adverse events, mefloquine should not be taken for prophylaxis in patients with active depression or with a recent history of depression, generalized anxiety disorder, psychosis, or schizophrenia or other major psychiatric disorders. Mefloquine should be used with caution in patients with a previous history of depression.

During prophylactic use, if psychiatric symptoms such as acute anxiety, depression, restlessness or confusion occur, these may be considered prodromal to a more serious event. In these cases, the drug must be discontinued and an alternative medication should be substituted.

Concomitant administration of mefloquine and quinine or quinidine may produce electrocardiographic abnormalities.

Concomitant administration of mefloquine and quinine or chloroquine may increase the risk of convulsions.

Legal Issues

There is currently no legal information available for this drug.

FDA Safety Alerts

There are currently no FDA safety alerts available for this drug.

Manufacturer Warnings

There is currently no manufacturer warning information available for this drug.

FDA Labeling Changes

There are currently no FDA labeling changes available for this drug.

Uses

Treatment of Acute Malaria Infections

Mefloquine hydrochloride tablets are indicated for the treatment of mild to moderate acute malaria caused by mefloquine-susceptible strains of P. falciparum (both chloroquine-susceptible and resistant strains) or by Plasmodium vivax. There are insufficient clinical data to document the effect of mefloquine in malaria caused by P. ovale or P. malariae.

  Note: Patients with acute P. vivax malaria, treated with mefloquine, are at high risk of relapse because mefloquine does not eliminate exoerythrocytic (hepatic phase) parasites. To avoid relapse, after initial treatment of the acute infection with mefloquine, patients should subsequently be treated with an 8-aminoquinoline derivative (e.g., primaquine). Prevention of Malaria

Mefloquine hydrochloride tablets are indicated for the prophylaxis of P. falciparum and P. vivax malaria infections, including prophylaxis of chloroquine-resistant strains of P. falciparum.

History

There is currently no drug history available for this drug.

Other Information

Mefloquine hydrochloride is an antimalarial agent available as 250 mg tablets of mefloquine hydrochloride (equivalent to 228.0 mg of the free base) for oral administration.

Mefloquine hydrochloride is a 4-quinolinemethanol derivative with the specific chemical name of (R*, S*)-(±)-α-2-piperidinyl-2,8-bis (trifluoromethyl)-4-quinolinemethanol hydrochloride. It is a 2-aryl substituted chemical structural analog of quinine. The drug is a white to almost white crystalline compound, slightly soluble in water.

Mefloquine hydrochloride has a calculated molecular weight of 414.78 and the following structural formula:
image of Mefloquine hydrochloride chemical structure

The inactive ingredients are crospovidone, lactose monohydrate, low-substituted hydroxypropyl cellulose, magnesium stearate, microcrystalline cellulose, pregelatinized starch and talc.

Mefloquine Hydrochloride Manufacturers


  • Physicians Total Care, Inc.
    Mefloquine Hydrochloride Tablet [Physicians Total Care, Inc.]
  • Rebel Distributors Corp
    Mefloquine Hydrochloride Tablet [Rebel Distributors Corp]
  • West-ward Pharmaceutical Corp
    Mefloquine Hydrochloride Tablet [West-ward Pharmaceutical Corp]
  • H.j. Harkins Company, Inc.
    Mefloquine Hydrochloride Tablet [H.j. Harkins Company, Inc.]
  • Rebel Distributors Corp
    Mefloquine Hydrochloride Tablet [Rebel Distributors Corp]
  • Barr Laboratories Inc.
    Mefloquine Hydrochloride Tablet [Barr Laboratories Inc.]
  • Sandoz Inc
    Mefloquine Hydrochloride Tablet [Sandoz Inc]
  • Roxane Laboratories, Inc.
    Mefloquine Hydrochloride Tablet [Roxane Laboratories, Inc.]

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