Question 1

What is Yonsa?

Accepted Answer

Yonsa is an androgen biosynthesis inhibitor that interferes with the body's ability to produce specific hormones. It specifically targets an enzyme called CYP17, which is found in tissues like the adrenal glands and testes. By inhibiting this enzyme, the medication reduces the amount of testosterone and other androgens circulating in the system.

This formulation uses specialized technology to create smaller drug particles, which helps the body absorb the medication more efficiently than standard versions of the same active ingredient.

Question 2

What is Yonsa used for?

Accepted Answer

Yonsa is used to treat prostate cancer .

Question 3

How does Yonsa work?

Accepted Answer

Mechanism of Action

Yonsa is a type of hormone therapy known as a CYP17 inhibitor. It works by interfering with an enzyme called CYP17, which the body uses to produce androgens (male hormones), such as testosterone. Many prostate cancer cells rely on these hormones to grow and survive.

While other treatments may only stop hormone production in the testes, Yonsa blocks the production of androgens in three specific areas:

The testes

The adrenal glands (glands located on top of the kidneys)

The prostate tumor itself

By significantly lowering androgen levels in these areas, the medication helps slow or stop the growth of the cancer.

Formulation and Absorption

Yonsa uses a micronized formulation, meaning the active ingredient is broken down into very small particles. This technology is designed to help the body absorb the medication more effectively. Because of this improved absorption, Yonsa can be taken at a lower dose than some other forms of abiraterone to achieve the same therapeutic effect.

This medication is used in combination with a corticosteroid, such as methylprednisolone. Because Yonsa blocks the production of several types of hormones, the steroid is needed to help the body maintain a healthy balance and prevent side effects like high blood pressure or low potassium levels.

Question 4

What are the active ingredients in Yonsa?

Accepted Answer

The active ingredient in Yonsa is abiraterone .

Question 5

What are the side effects of Yonsa?

Accepted Answer

Common side effects of Yonsa may include:

joint pain

low potassium

fluid retention

and others

Always consult with a healthcare professional about potential side effects.

Question 6

What drug class is Yonsa?

Accepted Answer

Yonsa belongs to the androgen biosynthesis inhibitor drug class.

Question 7

What is the dosage of Yonsa and how do I take it?

Accepted Answer

General Administration

Yonsa is taken by mouth, typically once every day. The tablets must be swallowed whole with water. Do not crush, break, or chew the medication.

Taking with Food

This specific form of abiraterone can be taken with or without food. This differs from other versions of the medication, so it is important to follow the specific instructions provided for this brand.

Combination Treatment

Yonsa is used as part of a combination therapy. It must be taken alongside a steroid called methylprednisolone. Additionally, patients usually continue receiving other treatments, such as gonadotropin-releasing hormone (GnRH) therapy, unless they have undergone surgical removal of the testicles.

Missed Doses

If a dose is missed, it should be skipped entirely. Take the next dose at the usual scheduled time. Do not take extra medicine to make up for a missed dose. If more than one dose is missed, contact a healthcare professional for further guidance.

Interchangeability

Yonsa is not the same as other abiraterone acetate products. Because the body absorbs this version differently, it cannot be substituted for other brands on a one-to-one basis. Only take the brand prescribed by your healthcare provider.

Question 8

Is Yonsa safe during pregnancy and breastfeeding?

Accepted Answer

Pregnancy Risks

Yonsa is not intended for use in women. It is contraindicated during pregnancy because it can cause fetal harm or lead to pregnancy loss. If this medication is used during pregnancy, or if a patient becomes pregnant while taking this drug, the fetus may be at risk.

Handling Precautions

Because of the risk of fetal harm, women who are pregnant or who may become pregnant should avoid handling Yonsa tablets without protection. If tablets are crushed or broken, they should not be handled by women in these groups. If contact is necessary, gloves should be worn.

Contraception Requirements

Men with female partners of reproductive potential should use effective birth control during treatment with Yonsa. This should continue for three weeks after the final dose to prevent accidental exposure to a developing fetus.

Breastfeeding

It is not known whether Yonsa passes into human breast milk or if it has any effects on a breastfed child. This medication is not approved for use in females.

Question 9

What forms and strengths does Yonsa come in?

Accepted Answer

Yonsa is supplied as a tablet for oral administration. It is used in combination with methylprednisolone.

Oral tablet

Question 10

What is the FDA approval status of Yonsa?

Accepted Answer

FDA Approval and Indications

The U.S. Food and Drug Administration (FDA) approved Yonsa in May 2018. It is indicated for use in combination with methylprednisolone for the treatment of patients with metastatic castration-resistant prostate cancer (mCRPC). This condition refers to prostate cancer that has spread to other parts of the body and no longer responds to medical or surgical treatments that lower testosterone levels.

Regulatory Requirements and Safety

Yonsa is a micronized formulation of abiraterone acetate. Because of this specific formulation, the FDA-approved labeling notes that it is not interchangeable with other abiraterone acetate products on a milligram-to-milligram basis. The FDA requires that Yonsa be taken specifically with the corticosteroid methylprednisolone to help manage potential side effects related to hormone changes, such as high blood pressure or low potassium levels.

There are currently no Risk Evaluation and Mitigation Strategies (REMS) or boxed warnings required by the FDA for this medication. However, the regulatory labeling includes warnings regarding liver toxicity, cardiovascular events, and adrenal insufficiency. It is available only by prescription.

Question 11

What should I know about Yonsa and cost?

Accepted Answer

Factors Influencing Cost

The price you pay for Yonsa is determined by several factors, including:

Insurance Coverage: Most commercial insurance plans and Medicare Part D provide coverage for Yonsa, but your specific out-of-pocket costs will depend on your plan's formulary and deductible.

Pharmacy Selection: Prices may differ between retail pharmacies and specialty pharmacies, which are often required for oncology medications.

Manufacturer Assistance: The drug manufacturer may offer copay cards or patient assistance programs for eligible individuals to help reduce the cost of the medication.

Formulation and Value

Yonsa is a micronized formulation of abiraterone acetate. While it contains the same active ingredient as other brands like Zytiga, the dosages are not the same and they are not interchangeable. This difference in formulation can impact how the drug is tiered by insurance companies.

Because Yonsa is typically used in combination with methylprednisolone, patients should also consider the cost of the secondary medication when budgeting for treatment.

Yonsa

Medication Quick Facts

📋Overview

What It's Used For

How It Works

Side Effects

Warnings & Precautions

Dosage & How to Take

Pregnancy & Breastfeeding

Forms & Strengths

FDA / Regulatory Status

Price Information

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