Product image of SEPHIENCE (sepiapterin) (Sepiapterin) 1000 mg/1 POWDER supplied by GNH India

SEPHIENCE (sepiapterin)

Active Ingredient:
Sepiapterin
Form:
POWDER
Brand:
SEPHIENCE
Origin:
USA

SEPHIENCE (sepiapterin) (Sepiapterin POWDER) 1000 mg/1

SEPHIENCE (sepiapterin) is an FDA-approved oral medication developed by PTC Therapeutics for the treatment of phenylketonuria (PKU), a rare inherited metabolic disorder. It received orphan drug designation and approval as a novel therapeutic option to help manage phenylalanine levels in PKU patients. SEPHIENCE represents an important advancement in endocrinology and metabolic disorder management.

Strength

1000 mg/1

Pack Size

30 PACKET in 1 CARTON (60468-006-03) / 1 POWDER in 1 PACKET (60468-006-01)

Manufacturer / TM Owner

PTC Therapeutics

1
Pack/s
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Indications & Clinical Uses

  • SEPHIENCE is indicated for the treatment of phenylketonuria (PKU), a rare autosomal recessive metabolic disorder caused by deficiency of the enzyme phenylalanine hydroxylase (PAH). This deficiency leads to accumulation of phenylalanine, causing intellectual disability, neurological complications, and other systemic manifestations if untreated. SEPHIENCE is an oral formulation of sepiapterin, a precursor to tetrahydrofolate (BH4), which acts as a cofactor for residual PAH enzyme activity. The drug is designed for PKU patients with residual PAH enzyme activity who may respond to BH4 supplementation. By enhancing endogenous BH4 levels, SEPHIENCE helps improve phenylalanine metabolism and reduce blood phenylalanine concentrations. The target patient population includes both pediatric and adult PKU patients with documented BH4-responsiveness, offering an oral alternative to intravenous BH4 therapy and potentially improving treatment adherence and quality of life.

Side Effects

  • Common side effects of SEPHIENCE may include gastrointestinal disturbances such as nausea, vomiting, diarrhea, and abdominal discomfort. Headache, dizziness, and fatigue have been reported in clinical trials. Serious adverse events are rare but may include hypersensitivity reactions. Patients require regular monitoring of blood phenylalanine levels to assess therapeutic efficacy and adjust dietary protein intake accordingly. Baseline and periodic assessment of renal and hepatic function is recommended. Blood pressure monitoring may be warranted. Ophthalmologic examination should be considered given the metabolic nature of the disorder. Healthcare providers should monitor for any signs of adverse reactions and maintain appropriate laboratory surveillance throughout treatment.

Precautions & Warnings

  • SEPHIENCE is contraindicated in patients with known hypersensitivity to sepiapterin or any excipients. Use with caution in patients with hepatic or renal impairment, as dose adjustment may be necessary. Pregnancy: Limited data available; use only if benefits outweigh risks. Pediatric use: Safety and efficacy established in pediatric PKU patients; dosing adjustments based on age and weight are recommended. Patients should maintain appropriate dietary protein restriction as part of comprehensive PKU management. Regular monitoring of phenylalanine levels is essential to prevent both hyperphenylalanemia and potential complications from overly restrictive dietary management. Concurrent use with other medications affecting phenylalanine metabolism should be evaluated carefully.

Avoid Interactions

  • Limited specific drug-drug interactions have been documented with SEPHIENCE. However, concurrent use with other BH4-containing products or supplements should be avoided to prevent excessive BH4 accumulation. Medications affecting folate metabolism or renal function may potentially influence sepiapterin levels and should be used cautiously. Patients should inform healthcare providers of all concurrent medications, supplements, and herbal products. No significant food interactions have been identified, though dietary protein content remains critical in PKU management independent of SEPHIENCE therapy.

Frequently Asked Questions

SEPHIENCE is used to treat phenylketonuria (PKU), a rare inherited metabolic disorder characterized by elevated blood phenylalanine levels. It works by increasing tetrahydrofolate (BH4) levels to enhance residual phenylalanine hydroxylase enzyme activity. SEPHIENCE is specifically indicated for PKU patients with documented BH4-responsiveness.

SEPHIENCE is administered orally as a tablet formulation. Dosing is individualized based on patient age, weight, and response to therapy, as determined by blood phenylalanine levels. Patients should take SEPHIENCE as directed by their healthcare provider, typically with or without food, and maintain consistent timing for optimal efficacy.

Common side effects include nausea, vomiting, diarrhea, abdominal discomfort, headache, dizziness, and fatigue. Most side effects are mild to moderate and may diminish with continued use. Patients should report persistent or severe side effects to their healthcare provider immediately.

SEPHIENCE is manufactured by PTC Therapeutics, a biopharmaceutical company specializing in rare genetic disorders and metabolic diseases.

Yes, SEPHIENCE received FDA orphan drug designation for the treatment of phenylketonuria. Orphan drug status is granted to medications treating rare diseases affecting fewer than 200,000 people in the United States, providing incentives for development of treatments for rare conditions like PKU.

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GNH India Pharmaceuticals Limited

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Last updated:

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