Scientists and health researchers have been searching the last couple of years for new uses for old medications. One area of interest is drug repurposing, which is the study of new uses for old medications in other therapeutic areas. One of the compounds being looked at in this regard is fenbendazole, which is an antiparasitic drug primarily used in veterinary medicine.

Fenbendazole’s main use in the veterinary field has been for the treatment of parasitic infections, and recently, it has gained interest in the research community for use in cancer studies and other therapeutic research. Increased interest in the compound has prompted individuals to seek information on the factors that determine the cost and accessibility of fenbendazole products, such as buy fenbendazole 222 mg, as the scientific community continues to evolve.

Antiparasitic medications have increasingly become of interest in facilitating research that has previously been untapped. This article will also discuss what fenbendazole is, and the reasons for the study of fenbendazole and other antiparasitic agents in the field of cancer research.

What is Fenbendazole?

Fenbendazole is an antiparasitic medicine that is used to kill parasitic worms within a specific class of compounds known as benzimidazole anthelmintics. These agents are commonly used in the veterinary field for the treatment of parasitic infections. They are effective against a plethora of internal parasitic infections, which includes infections caused by roundworms, as well as a number of other intestinal parasitic worms.

The active ingredient fenbendazole (FEN) works by damaging the structural components exclusively found in parasites’ cells. The main target of FEN are cell microtubules which are responsible for the support and structural integrity of a cell and are involved in the most critical functional processes of the cell. Microtubule damage means the parasite will be incapable of translocating material and will die.

Neither the safety nor the practical efficacy of FEN will require additional studies, making it a near-perfect candidate for drug repurposing. The drug has a documented history of use and safety in target species for antiparasitic treatment.

Repurposing of drugs

The main goal of early studies in drug repurposing was to shorten the timelines of drug development. The average of ten years required to develop a drug, design and implement a clinical trial would mean an increase in the cost of the drug above the level of affordability of the proposed target population.

The economic impact of drug repurposing is further intensified if the drug requires an application for a new active ingredient, as in, for example, the use of fenben as an anticancer agent. It is well documented that drugs developed for use in one disease are eventually shown to be useful for the treatment of other, unrelated diseases.

As fenbendazole already has proven biologic effects, it is currently under investigation by unconnected, third-party researchers. Understanding of the effects of a compound would likely result in a more targeted investigation of the ways in which a compound of fennel interacts with the cells and disease pathways of humans.

Fenbendazole’s Mechanism of Action in Cancer Research

Fenbendazole’s research stemmed from studying microtubules. Microtubules are critical in cell division and suddenly become targets in chemotherapy treatment as cancer cells begin to rapidly divide.

Surprisingly enough, fenbendazole is in the same realm as most oncological medicines. Multiple ascribed anticancer medications have microtubule destabilizing actions that target cancer cell proliferation. Since multi-angled fenbendazole acts on parasitic microtubules, its subsidiary influences on cancer models have become a concern for researchers.

Some preliminary laboratory research have hypothesized whether fenbendazole would:

• Interfere with the metabolism of cancer cells
• Affect the production of energy in the cell
• Alter the pathways that lead to the development of a tumor
• Interact with some of the structural proteins that are responsible for the division of cells.

Most of the research and laboratory studies have been in animals and laboratory models. Hence, research should be more broadened to determine if the factors examined have real effects in clinical applications.

Dosage of Capsules of Fenbendazole

In its discussions regarding fenbendazole and the proposed protocols from these discussions, the fenbendazole 222 mg or 444 mg capsule format has been cited. These dosing units appear in discussions of clinical and experimental research on drug repurposing.

Dosage recommendations for medical use are given after obtaining the results from several clinical trials and the subsequent receipt of permission from regulatory bodies. Any proposed therapeutic protocols go through scientific research to determine their legitimacy in terms of practical usage.

Antiparasitic Drugs in Oncology Research

Not only fenbendazole is being examined as an antiparasitic drug for possible uses in oncology research. For the class of medications to be examined as an antiparasitic drug in means of oncological studies, it must first modularly be influenced by one of the many biological mechanisms involved in cell growth, cell division, and cell metabolism.

Some of the mechanisms of interest to researchers include:

• The metabolism of cells
• The immune system
• Oxidative stress
• Some of the mechanisms of tumorigenesis

The incorporation of antiparasitic drugs in oncology research is an example of the tendency of research to focus on the “repurposing” of existing drugs.

The Value of Evidence-Based Research

Although the amount of fenbendazole and cancer research online discussions has exploded in the recent past, veteran medical practitioners tend to express the need for research to be in place. There is no recommended clinical protocol for the treatment of cancer that is not preceded by clinical trials.

When scientists conduct research, they have to consider a variety of factors such as:

• Safety for human subjects
• Proper dosage
• Long-term side effects
• Drug interactions

Only through extensive study, scientists will be able to determine whether fenbendazole and similar compounds will be useful for medicinal purposes.

Conclusion

Fenbendazole has been used as an antiparasitic drug in veterinary medicine for many years. Its other biological properties have captured the attention of scientists interested in drug repurposing and experimental oncology.

Although initial laboratory results have generated some interest, the enthusiasm must be tempered by the understanding that fenbendazole is still a long way from being able to address issues other than its current veterinary applications. While fenbendazole is one of many compounds available to be studied, the investigation of fenbendazole, along with other compounds, will help broaden the available options in the field of medicine.