GRANDAXIN ® (Tofisopam, Emandaxin)

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Buy Grandaxin (Tofisopam) tablets online with 37 day fast domestic delivery within the US ($5)  just choose “Ships from: US (+15%)”

Grandaxin (Tofisopam) is a non-sedating anxiolytic drug with unique pharmacological action. Tofisopam was first synthesized in 1966 in Hungary and is successfully used for anxiety management since the 1970s.

As of today, Grandaxin is used in 15 countries across the world, including Russia, Japan, Hungary, and the Czech Republic. Although this drug is not approved for use in North America, its R-enantiomer is in stage II clinical trials for the treatment of irritable bowel syndrome.

Grandaxin is a benzodiazepine tranquilizer; however, its pharmacological action differs from that of typical benzodiazepine derivatives. Tofisopam belongs to the 2,3-benzodiazepines family, a unique class of psychoactive substances also known as homophthalazines. Unlike 1,4- benzodiazepine derivatives (e.g Diazepam), Tofisopam does not have sedative and anticonvulsant properties and is not habit-forming.

Grandaxin (Tofisopam) does not impair cognitive functions, you can buy it for its mild stimulant action and the ability to potentiate the effect of dopaminergic stimulants.

Tofisopam has a complicated mechanism of action. It does not bind to benzodiazepine receptors and has a limited affinity to the peripheral benzodiazepine receptors, but shown to improve the binding of 1,4-benzodiazepines to their receptors.

The drug acts as a PDE inhibitor with the highest affinity to PDE-4A1, PDE-10A1, PDE-3, and PDE-2A3 which can be responsible for its moderate antipsychotic action.

Several studies suggest that the behavioral effects of Grandaxin are likely to be mediated through its effect on dopaminergic and opioid neurotransmission. Tofisopam appears to increase the sensitivity of dopamine receptors and modulate opioid signal transduction in the brain without the danger of addiction.

Produced by EGIS Pharmaceuticals, Hungary.


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This product has not been approved by the US FDA. All statements on this page are for informational purposes only and have not been evaluated by the US FDA.
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Dosage and administration

The recommended dosage is 1-2 pills, 1–3 times a day. If taken occasionally, the dosage is 1-2 pills. The maximum daily dose is 300 mg. Geriatric patients and patients with renal insufficiency should take twice less.

Side effects

  • Decreased appetite;
  • Constipation;
  • Flatulence;
  • Nausea;
  • Dry mouth;
  • Headaches;
  • Insomnia;
  • Irritability;
  • Agitation;
  • May provoke seizures in patients with epilepsy;
  • Skin rash;
  • Muscle tension.

 

Contraindications

  • Hypersensitivity to Tofisopam or other benzodiazepines;
  • Conditions accompanied by severe depression, psychomotor agitation, and aggression;
  • Respiratory failure;
  • Pregnancy and lactation;
  • Sleep apnea;
  • Treatment with tacrolimus, sirolimus, and/or cyclosporine.

 

This drug should be taken with caution in patients with acute respiratory distress syndrome, angle-closure glaucoma, epilepsy, and organic brain syndrome.

Drug interaction

  • Tofisopam may increase the plasma concentration of the drugs metabolized by CYP3A4. Does potentiate the effects of CNS depressants (e.g analgesics, anesthetics, antidepressants, H1-antihistamines, sedatives, and antipsychotics).
  • Hepatic enzyme inducers (alcohol, nicotine, barbiturates, anticonvulsants) may enhance the metabolism of Tofisopam, thus decreasing its efficacy.
  • Some antifungal drugs (Ketoconazole, Itraconazole) may inhibit the metabolism of Tofisopam and increase its concentration in blood plasma.
  • Some antihypertensive drugs (Clonidine, calcium channel blockers) may potentiate the effect of Tofisopam. Beta-blockers may inhibit the metabolism of the drug without affecting its efficacy significantly.
  • Tofisopam may increase plasma levels of Digoxin.
  • Benzodiazepines may affect the anticoagulant effect of warfarin.
  • Long-term treatment with disulfiram may inhibit the metabolism of Tofisopam.
  • Antacids may affect the absorption of Tofisopam. Omeprazole and Cimetidine do inhibit the metabolism of Tofisopam.
  • Oral contraceptives may inhibit the metabolism of Tofisopam.
  • Tofisopam does decrease the depressant effect of alcohol on the central nervous system.

 

Manufacturer

EGIS Pharmaceuticals, Hungary.

OFFICIAL INSTRUCTION

  1. Varady et al (1975) The clinical evaluation of Grandaxin used in the treatment of outpatients (a multicentric study) https://www.ncbi.nlm.nih.gov/pubmed/7855
  2. Sladka et al (1978) Placebo controlled study with tofisopam in anxious neurosis https://www.ncbi.nlm.nih.gov/pubmed/32724
  3. A Bond, M Lader (1982) A comparison of the psychotropic profiles of tofisopam and diazepam https://www.ncbi.nlm.nih.gov/pubmed/6124424
  4. C Banki (1983) Comparative study with Grandaxin and diazepam in alcohol withdrawal syndrome and gerontopsychiatric diseases https://www.ncbi.nlm.nih.gov/pubmed/6152821
  5. Szego et al (1993) Excerpts from the clinical-pharmacologic and clinical studies of Grandaxin https://www.ncbi.nlm.nih.gov/pubmed/8100114
  6. Klebovich et al (1993) Pharmacokinetics and metabolism of tofizopam (Grandaxin) https://www.ncbi.nlm.nih.gov/m/pubmed/8100113/
  7. Kalashnikov et al (2002) Immunomodulating effects of tofizopam (Grandaxin) and diazepam in vitro https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1781640/
  8. Baek et al (2002) Analysis of tofisopam in human serum by column-switching semi-micro high-performance liquid chromatography and evaluation of tofisopam bioequivalency https://www.ncbi.nlm.nih.gov/pubmed/11933029
  9. Eros et al (2002) A population-based case-control teratologic study of nitrazepam, medazepam, tofisopam, alprazolum and clonazepam treatment during pregnancy https://www.ncbi.nlm.nih.gov/pubmed/11858890
  10. Kato et al (2003) A case in which tofisopam was effective for treatment of paroxysmal supraventricular tachycardia https://www.ncbi.nlm.nih.gov/pubmed/12772593
  11. Arushanian et al (2004) Peculiarities in the effect of tofisopam and valerian extract on short-term memory and anxiety states in healthy humanshttps://www.ncbi.nlm.nih.gov/pubmed/15707009
  12. E Plotnikova, E Beloborodova (2005) Use of grandaxin in hypermotor dysfunction of the biliary ducts in young people https://www.ncbi.nlm.nih.gov/pubmed/17378391
  13. Rundfeldt et al (2010) The atypical anxiolytic drug, tofisopam, selectively blocks phosphodiesterase isoenzymes and is active in the mouse model of negative symptoms of psychosis https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2993883/

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