Glentek/Riluzol (riluzole) vs Olpruva (sodium phenylbutyrate)

Glentek/Riluzol (riluzole) vs Olpruva (sodium phenylbutyrate)

Glentek/Riluzole (riluzole) is primarily used for the treatment of amyotrophic lateral sclerosis (ALS), a neurodegenerative disease, and works by reducing the release of glutamate, which is thought to be involved in the disease pathology. Olpruva (sodium phenylbutyrate) is a medication used for urea cycle disorders, which are genetic disorders that result in a deficiency of one of the enzymes in the urea cycle. The choice between these medications would depend on the specific condition being treated, as they are used for very different diseases; riluzole for ALS and sodium phenylbutyrate for urea cycle disorders, and they are not interchangeable.

Difference between Glentek/Riluzol and Olpruva

Metric Glentek/Riluzol (riluzole) Olpruva (sodium phenylbutyrate)
Generic name Riluzole Sodium phenylbutyrate
Indications Amyotrophic lateral sclerosis (ALS) Urea cycle disorders
Mechanism of action Reduces glutamate release, inactivates voltage-dependent sodium channels Conjugates with glutamine to form phenylacetylglutamine, which is excreted by the kidneys
Brand names Glentek, Rilutek, Teglutik Buphenyl, Pheburane
Administrative route Oral Oral
Side effects Dizziness, gastrointestinal disturbances, elevated liver enzymes Bad taste, body odor, headache, nausea
Contraindications Liver disease, caution in renal impairment Liver or kidney impairment, hyperammonemia
Drug class Glutamate antagonist Ammonia scavenger
Manufacturer Sanofi Horizon Pharma

Efficacy

Efficacy of Riluzole (Glentek/Rilutek) in ALS

Riluzole, marketed under the names Glentek and Rilutek, is a medication that has been approved for the treatment of Amyotrophic Lateral Sclerosis (ALS). The efficacy of riluzole in ALS has been demonstrated in multiple clinical trials. It is believed to work by reducing glutamate-mediated motor neuron damage, which is a key factor in the pathogenesis of ALS. Studies have shown that riluzole can extend survival by several months, especially in the bulbar form of the disease, which affects speech and swallowing. Additionally, riluzole may delay the need for tracheostomy (a surgical procedure to create an airway in the neck) and the use of ventilatory support in affected individuals.

Impact on Disease Progression and Quality of Life

While riluzole does not halt the progression of ALS, it can have a modest impact on disease progression. The medication may improve survival and provide a slight delay in the progression of disability. However, it is important to note that the effectiveness of riluzole varies among individuals, and not all patients may experience these benefits. Furthermore, the influence of riluzole on quality of life in ALS patients is less clear, with studies providing mixed results. Some patients may experience an improvement in overall function, while others may not notice a significant change.

Efficacy of Sodium Phenylbutyrate (Olpruva) in ALS

Sodium phenylbutyrate, sold under the brand name Olpruva, is a medication that has been explored for off-label use in the treatment of ALS. This compound is thought to exert neuroprotective effects by reducing neuronal stress and has been studied in combination with other medications for potential synergistic benefits. However, the efficacy of sodium phenylbutyrate as a monotherapy for ALS is not well-established, and more research is needed to confirm its potential benefits in this disease. Clinical trials are ongoing to evaluate the safety and efficacy of sodium phenylbutyrate in combination with other agents for the treatment of ALS.

Current Research and Future Directions

Current research efforts are focused on better understanding the mechanisms of action of both riluzole and sodium phenylbutyrate, as well as identifying potential biomarkers that could predict response to these medications. In the case of riluzole, further studies are also aimed at optimizing dosing and administration to maximize patient benefit. For sodium phenylbutyrate, the research is still in the early stages, and its use in ALS remains investigational. As new data emerge from clinical trials and scientific studies, the information on the efficacy of these medications in ALS will continue to evolve, potentially leading to improved treatment strategies for this debilitating condition.

Regulatory Agency Approvals

Glentek/Riluzol
  • European Medical Agency (EMA), European Union
  • Therapeutic Goods Administration (TGA), Australia
  • Medicines & Healthcare products Regulatory Agency (MHRA), United Kingdom
  • The Medicines Evaluation Board (MEB), The Netherlands
Olpruva
  • Food and Drug Administration (FDA), USA

Access Glentek/Riluzol or Olpruva today

If Glentek/Riluzol or Olpruva are not approved or available in your country (e.g. due to supply issues), you can access them via Everyone.org.

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