| Immune thrombocytopenic purpura
Tavalisse vs Gammaked
Side-by-side clinical, coverage, and cost comparison for immune thrombocytopenic purpura.Deep comparison between: Tavalisse vs Gammaked with Prescriber.AI
AI compares prescribing info and payer-specific access barriers across 1,200+ formularies. Here's a preview of what prescribers are already asking.Safety signalsGammaked has a higher rate of injection site reactions vs Tavalisse based on FDA-approved prescribing information
Coverage gaps3 major payers require step therapy for Gammaked but not Tavalisse, including UnitedHealthcare
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Category
Tavalisse
Gammaked
At A Glance
Oral
Twice daily
SYK inhibitor
IV infusion
Immune globulin
Indications
- Immune thrombocytopenic purpura
- Primary immune deficiency disorder
- Immune thrombocytopenic purpura
- Polyradiculoneuropathy, Chronic Inflammatory Demyelinating
- Congenital agammaglobulinemia
- Common Variable Immunodeficiency
- X-linked agammaglobulinemia
- Wiskott-Aldrich Syndrome
- Severe Combined Immunodeficiency
Dosing
Immune thrombocytopenic purpura Initiate at 100 mg orally twice daily; after 4 weeks, increase to 150 mg twice daily if platelet count has not reached at least 50 x 10 9 /L; use the lowest dose to maintain platelet count at least 50 x 10 9 /L; discontinue after 12 weeks if platelet count does not increase sufficiently to avoid clinically important bleeding.
Primary immune deficiency disorder IV: 300-600 mg/kg every 3-4 weeks; SC (PI only): individualized weekly dose calculated as previous IGIV dose (g) x 1.37 divided by number of weeks between IV doses.
Immune thrombocytopenic purpura IV only: total dose 2 g/kg given as 1 g/kg on two consecutive days or 0.4 g/kg on five consecutive days; do not administer subcutaneously.
Polyradiculoneuropathy, Chronic Inflammatory Demyelinating IV only: loading dose 2 g/kg over two to four consecutive days; maintenance 1 g/kg every 3 weeks (or 0.5 g/kg on two consecutive days every 3 weeks).
Contraindications
—
- Previous anaphylactic or severe systemic reaction to human immune globulin
- IgA deficiency with antibodies against IgA and history of hypersensitivity reaction
Adverse Reactions
Most common (>=5%) Diarrhea, hypertension, nausea, dizziness, ALT increased, AST increased, respiratory infection, rash, abdominal pain, fatigue, chest pain, neutropenia
Serious Febrile neutropenia, diarrhea, pneumonia, hypertensive crisis
Most common (>=5%) PI (IV): cough, rhinitis, pharyngitis, headache, asthma, nausea, fever, diarrhea, sinusitis; PI (SC): local infusion site reactions, fatigue, headache, upper respiratory tract infection, arthralgia, diarrhea, nausea, sinusitis, bronchitis, depression, allergic dermatitis, erythema, migraine, myalgia, viral infection, pyrexia; ITP: headache, ecchymosis, vomiting, fever, nausea, rash, abdominal pain, back pain, dyspepsia; CIDP: headache, pyrexia, hypertension, chills, rash, nausea, arthralgia, asthenia
Serious Pulmonary embolism (CIDP), exacerbation of autoimmune pure red cell aplasia (PI), hemolytic anemia
Postmarketing Anaphylaxis, tachycardia, acute renal dysfunction/failure, ARDS, TRALI, pulmonary edema, cardiac arrest, thromboembolism, coma, seizures, aseptic meningitis, Stevens-Johnson syndrome, pancytopenia, hemolytic anemia, hepatic dysfunction
Pharmacology
Fostamatinib is a tyrosine kinase inhibitor with demonstrated activity against spleen tyrosine kinase (SYK); its major active metabolite R406 inhibits signal transduction of Fc-activating receptors and B-cell receptor, reducing antibody-mediated destruction of platelets.
GAMMAKED is an immune globulin that supplies a broad spectrum of opsonic and neutralizing IgG antibodies against bacterial, viral, parasitic, and mycoplasmal agents and their toxins; the precise mechanism of action in ITP and CIDP has not been fully elucidated.
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Most Common Insurance
Anthem BCBS
Tavalisse
- Covered on 5 commercial plans
- PA (10/12) · Step Therapy (10/12) · Qty limit (9/12)
Gammaked
- Covered on 5 commercial plans
- PA (10/12) · Step Therapy (10/12) · Qty limit (0/12)
UnitedHealthcare
Tavalisse
- Covered on 4 commercial plans
- PA (5/8) · Step Therapy (4/8) · Qty limit (5/8)
Gammaked
- Covered on 4 commercial plans
- PA (0/8) · Step Therapy (0/8) · Qty limit (0/8)
Humana
Tavalisse
- Covered on 0 commercial plans
- PA (3/3) · Step Therapy (3/3) · Qty limit (3/3)
Gammaked
- Covered on 0 commercial plans
- PA (3/3) · Step Therapy (3/3) · Qty limit (0/3)
Coverage data sourced from MMIT. Updated monthly.
Savings
$15/fillfill
Tavalisse Copay AssistanceCommercial or private insurance
Medicare, Medicaid, VA, TRICARE
No savings programs available for Gammaked.
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Clinical data sourced from FDA-approved labeling. Coverage data via MMIT. Updated monthly.