| Carcinoma breast stage IV
Orserdu vs Arimidex
Side-by-side clinical, coverage, and cost comparison for carcinoma breast stage iv.Deep comparison between: Orserdu vs Arimidex 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 signalsArimidex has a higher rate of injection site reactions vs Orserdu based on FDA-approved prescribing information
Coverage gaps3 major payers require step therapy for Arimidex but not Orserdu, including UnitedHealthcare
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Category
Orserdu
Arimidex
At A Glance
Oral
Daily
Estrogen receptor antagonist
Oral
Daily
Aromatase inhibitor
Indications
- Carcinoma breast stage IV
- Malignant neoplasm of breast
- Locally advanced breast cancer
- Carcinoma breast stage IV
Dosing
Carcinoma breast stage IV 345 mg taken orally once daily with food until disease progression or unacceptable toxicity; dose reductions to 258 mg or 172 mg once daily for adverse reactions.
Malignant neoplasm of breast 1 mg tablet orally once daily; adjuvant treatment duration in the ATAC trial was 5 years.
Locally advanced breast cancer, Carcinoma breast stage IV 1 mg tablet orally once daily; continue until tumor progression.
Contraindications
—
- Hypersensitivity to anastrozole or any excipient (including anaphylaxis, angioedema, and urticaria)
Adverse Reactions
Most common (>=10%) Musculoskeletal pain, nausea, increased cholesterol, increased AST, increased triglycerides, fatigue, decreased hemoglobin, vomiting, increased ALT, decreased sodium, increased creatinine, decreased appetite, diarrhea, headache, constipation, abdominal pain, hot flush, dyspepsia.
Serious Musculoskeletal pain, nausea.
Most common (>=10%) Hot flashes, asthenia, arthritis, pain, arthralgia, hypertension, depression, nausea and vomiting, rash, osteoporosis, fractures, back pain, insomnia, headache, bone pain, peripheral edema, increased cough, dyspnea, pharyngitis, lymphedema
Serious Skin lesions, ulcers, or blisters; severe allergic reactions with swelling of face, lips, tongue, and/or throat; liver function abnormalities including hepatitis
Postmarketing Hepatobiliary events (increases in alkaline phosphatase, ALT, AST, gamma-GT, and bilirubin; hepatitis), erythema multiforme, Stevens-Johnson syndrome, angioedema, urticaria, anaphylaxis, myalgia, hypercalcemia, tendon disorders including tendon rupture and tendonitis
Pharmacology
Estrogen receptor antagonist that binds to ERalpha and inhibits 17beta-estradiol mediated cell proliferation through ERalpha protein degradation via the proteasomal pathway, with demonstrated antitumor activity in ESR1-mutated and CDK4/6 inhibitor-resistant ER+ HER2- breast cancer models.
Anastrozole is a selective non-steroidal aromatase inhibitor that suppresses estrogen biosynthesis by blocking the aromatase enzyme, significantly lowering serum estradiol concentrations in postmenopausal women without affecting adrenal corticosteroid or aldosterone formation.
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Most Common Insurance
Anthem BCBS
Orserdu
- Covered on 5 commercial plans
- PA (11/12) · Step Therapy (0/12) · Qty limit (11/12)
Arimidex
- Covered on 5 commercial plans
- PA (0/12) · Step Therapy (0/12) · Qty limit (0/12)
UnitedHealthcare
Orserdu
- Covered on 4 commercial plans
- PA (6/8) · Step Therapy (0/8) · Qty limit (2/8)
Arimidex
- Covered on 4 commercial plans
- PA (4/8) · Step Therapy (0/8) · Qty limit (0/8)
Humana
Orserdu
- Covered on 0 commercial plans
- PA (2/3) · Step Therapy (0/3) · Qty limit (2/3)
Arimidex
- Covered on 0 commercial plans
- PA (0/3) · Step Therapy (0/3) · Qty limit (2/3)
Coverage data sourced from MMIT. Updated monthly.
Savings
Cost estimate not availableAssistance Fund: Breast Cancer
Commercial or private insurance
Medicare, Medicaid, VA, TRICARE
Cost estimate not availableAssistance Fund: Breast Cancer
Commercial or private insurance
Medicare, Medicaid, VA, TRICARE
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OrserduView full Orserdu profile
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Clinical data sourced from FDA-approved labeling. Coverage data via MMIT. Updated monthly.