Our Commitment to Improving Lives

Will my insurance cover my prescription? How much will my treatment cost? When you have questions, your Horizon By Your Side team is here to help you find the answers. Paying for treatment shouldn’t get in the way of your health. That’s why our Horizon By Your Side team will explore all of your options for you:

  • Do you have commercial insurance, like a preferred provider organization (PPO) or health maintenance organization (HMO)? If so, you may qualify for a lower co-pay*
  • Do you have government insurance, such as Medicare, Medicare Part D, Medicaid, Medigap, VA, CHAMPUS, Department of Defense, TRICARE, or any state, patient foundation, or other pharmaceutical program? If so, there may be additional support available for you
  • Once you and your healthcare team agree on a plan that works best for you, your Patient Access Liaison will talk to you about the insurance approval process and what your potential out-of-pocket treatment costs may be

Tools to Help You Understand Health Plans

Understanding Health Plans and Making the Right Choice for You

Learn how health plan providers determine coverage, what the two main types of health plans in the United States are, and what to consider when choosing a plan.

Download

Icon of Understanding Health Plans and Making the Right Choice For You PDF

The Insurance Approval Process

Learn how health plan providers review requests for coverage and what to do when requests are denied.

Download

Icon of The Insurance Approval Process PDF

Independent Organizations That Provide Foundational Assistance

Logo for The Assistance Fund Logo for The Assistance Fund Logo for The Assistance Fund

The Assistance Fund

The Assistance Fund is an independent charitable patient assistance organization that provides support for adults and children with rare and chronic diseases. The organization may help provide families with cost and travel assistance.

https://TAFcares.org/

Logo for Good Days Logo for Good Days Logo for Good Days

Good Days

Good Days works to improve the health and quality of life of patients with chronic disease, cancer, or other life-altering conditions. The organization may help provide families with cost and travel assistance.

https://MyGoodDays.org/

National Organization for Rare Disorders (NORD) logo National Organization for Rare Disorders (NORD) logo National Organization for Rare Disorders (NORD) logo

National Organization for Rare Disorders (NORD)

NORD is a patient advocacy organization dedicated to people with rare diseases and the groups that help them. NORD provides patients and families with advocacy information, assistance programs, and connections to patient organizations.

NORD also has an Emergency Relief Program. This fund provides financial assistance that can be used to pay for unexpected or emergency non-medical expenses such as utility expenses, cellular or internet service, emergency repairs to car, home or major appliance, and rent or mortgage payment assistance.

https://rarediseases.org

*The Horizon Commercial Co-Pay Program may be available to patients who meet the following minimum criteria:

  • Patient’s prescription cannot be paid in part or in full by any government-funded program including but not limited to: Medicare, Medicare Part D, Medicaid, Medigap, VA, CHAMPUS, Department of Defense (DOD), TRICARE, or any state, patient foundation, or other pharmaceutical program
  • Patient is prescribed a covered Horizon rare disease medication for an indication approved by the Food and Drug Administration; the indication for each product is shown in its prescribing information
  • Patient is a resident of the United States
  • Patient must be commercially insured and have financial responsibility for a portion of the drug and/or infusion cost if applicable

The assistance offered under this co-pay program is subject to additional terms and conditions, including but not limited to the following:

Terms and Conditions: Offer cannot be combined with any other rebate or coupon, free trial, or similar offer for the specified prescription. Not valid for prescriptions reimbursed in whole or in part by any government-funded program including but not limited to Medicare, Medicare Part D, Medicaid, Medigap, VA, CHAMPUS, DOD, TRICARE, or any state, patient foundation, or other pharmaceutical program. Offer good only in the United States at participating specialty pharmacies or sites of care. Offer not valid where otherwise prohibited by law, for example by applicable state law prohibiting co-pay cards. Horizon reserves the right to rescind, revoke, or amend offer without notice. The selling, purchasing, trading, or counterfeiting of any co-pay card or benefits is prohibited by law. This co-pay program is not insurance and is not intended to substitute for insurance. Age for eligibility is dependent on product indication.

Participating Pharmacies or Healthcare Providers: By using this co-pay program, you acknowledge and confirm that the prescription will not be reimbursed in whole or in part by any government-funded program (such as, without limitation, Medicare, Medicaid, VA, DOD, TRICARE) and the patient and prescription meet the eligibility criteria set forth in the terms and conditions. You are responsible for reporting the receipt of the co-pay program benefits as required by an insurer, payer, or applicable law or regulation.

Patients: By enrolling in this co-pay program, you acknowledge and confirm that you and the prescription meet the eligibility requirements set forth in the terms and conditions, including that the prescription will not be reimbursed in whole or in part by any government-funded program (such as, without limitation, Medicare, Medicaid, VA, DOD, TRICARE). You may not seek any claims to government payers or other payers or insurers for this prescription. You may not seek reimbursement from any health savings, flexible savings, or other healthcare reimbursement account for any amounts received from the co-pay program. You are responsible for reporting the receipt of the co-pay program benefits as required by an insurer, payer, or applicable law or regulation.


APPROVED USES and IMPORTANT SAFETY INFORMATION for BUPHENYL®
(sodium phenylbutyrate) Tablets and Powder

What is BUPHENYL?

BUPHENYL (sodium phenylbutyrate) Tablets is a prescription medicine that can be taken by mouth and BUPHENYL (sodium phenylbutyrate) Powder is a prescription medicine that can be taken by mouth or feeding tube for the long-term management of high blood levels of ammonia (hyperammonemia) caused by a condition called a urea cycle disorder (UCD).

BUPHENYL only treats high blood levels of ammonia in patients with the following enzyme deficiencies:

  • Carbamylphosphate synthetase (CPS)
  • Ornithine transcarbamylase (OTC)
  • Argininosuccinic acid synthetase (AS)

BUPHENYL can be used in Infants up to 28 days old who have a complete enzyme deficiency, and in patients 1 month of age and older who have a partial enzyme deficiency and have a history of brain damage from high blood levels of ammonia.

BUPHENYL must be used along with a low-protein diet and in some cases, dietary supplements.

BUPHENYL is not used to treat acute (severe) hyperammonemia, which is a medical emergency.

IMPORTANT SAFETY INFORMATION

What is the most important safety information I should know about BUPHENYL?

BUPHENYL may cause serious side effects, including:

Nervous system side effects (Neurotoxicity). The breakdown of BUPHENYL produces the byproduct phenylacetate (PAA), which may cause nervous system side effects.

  • sleepiness
  • weakness
  • lightheadedness
  • problems with memory
  • worsening of numbness, tingling, or burning in your hands or feet
  • change in taste
  • problems with hearing
  • confusion
  • nausea
  • headache

Who should not take BUPHENYL?

Do not take BUPHENYL if you are allergic to phenylbutyrate. Call your doctor or go to the nearest hospital emergency room if you experience an allergic reaction while taking BUPHENYL.

What should I tell my doctor before taking BUPHENYL?

Before taking BUPHENYL, tell your doctor about any medical conditions, including if you:

  • have heart failure or decreased kidney function, which may lead to retention of the sodium content of BUPHENYL with potentially serious consequences, such as worsening heart failure, high blood pressure, and swelling.
  • are pregnant or plan to become pregnant. It is not known if BUPHENYL will harm your unborn baby.
  • are breastfeeding or plan to breastfeed. It is not known if BUPHENYL passes into your breast milk. Breastfeeding is not recommended during treatment with BUPHENYL. Talk to your doctor about the best way to feed your baby if you take BUPHENYL.

What are possible side effects of BUPHENYL?

BUPHENYL may cause serious side effects, including:

See What is the most important safety information I should know about BUPHENYL?

The most common side effects of BUPHENYL include:

  • decreased appetite
  • body odor
  • bad taste
  • absent or irregular periods in women

These are not all of the possible side effects of BUPHENYL. Call your doctor for medical advice about side effects.

For additional important safety information, click here for the Full Prescribing Information and Patient Package Insert and discuss with your doctor.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088.

APPROVED USES and IMPORTANT SAFETY INFORMATION for BUPHENYL®
(sodium phenylbutyrate) Tablets and Powder

What is BUPHENYL?

BUPHENYL (sodium phenylbutyrate) Tablets is a prescription medicine that can be taken by mouth and BUPHENYL (sodium phenylbutyrate) Powder is a prescription medicine that can be taken by mouth or feeding tube for the long-term management of high blood levels of ammonia (hyperammonemia) caused by a condition called a urea cycle disorder (UCD).

BUPHENYL only treats high blood levels of ammonia in patients with the following enzyme deficiencies:

  • Carbamylphosphate synthetase (CPS)
  • Ornithine transcarbamylase (OTC)
  • Argininosuccinic acid synthetase (AS)

BUPHENYL can be used in Infants up to 28 days old who have a complete enzyme deficiency, and in patients 1 month of age and older who have a partial enzyme deficiency and have a history of brain damage from high blood levels of ammonia.

BUPHENYL must be used along with a low-protein diet and in some cases, dietary supplements.

BUPHENYL is not used to treat acute (severe) hyperammonemia, which is a medical emergency.

IMPORTANT SAFETY INFORMATION

What is the most important safety information I should know about BUPHENYL?

BUPHENYL may cause serious side effects, including:

Nervous system side effects (Neurotoxicity). The breakdown of BUPHENYL produces the byproduct phenylacetate (PAA), which may cause nervous system side effects.

  • sleepiness
  • weakness
  • lightheadedness
  • problems with memory
  • worsening of numbness, tingling, or burning in your hands or feet
  • change in taste
  • problems with hearing
  • confusion
  • nausea
  • headache

Who should not take BUPHENYL?

Do not take BUPHENYL if you are allergic to phenylbutyrate. Call your doctor or go to the nearest hospital emergency room if you experience an allergic reaction while taking BUPHENYL.

What should I tell my doctor before taking BUPHENYL?

Before taking BUPHENYL, tell your doctor about any medical conditions, including if you:

  • have heart failure or decreased kidney function, which may lead to retention of the sodium content of BUPHENYL with potentially serious consequences, such as worsening heart failure, high blood pressure, and swelling.
  • are pregnant or plan to become pregnant. It is not known if BUPHENYL will harm your unborn baby.
  • are breastfeeding or plan to breastfeed. It is not known if BUPHENYL passes into your breast milk. Breastfeeding is not recommended during treatment with BUPHENYL. Talk to your doctor about the best way to feed your baby if you take BUPHENYL.

What are possible side effects of BUPHENYL?

BUPHENYL may cause serious side effects, including:

See What is the most important safety information I should know about BUPHENYL?

The most common side effects of BUPHENYL include:

  • decreased appetite
  • body odor
  • bad taste
  • absent or irregular periods in women

These are not all of the possible side effects of BUPHENYL. Call your doctor for medical advice about side effects.

For additional important safety information, click here for the Full Prescribing Information and Patient Package Insert and discuss with your doctor.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088.