Does Oscar Health Cover Phentermine (Adipex-P / Lomaira)?
The verdict
Conditional on most plans
Oscar Health covers phentermine only when your plan includes a weight-loss or anti-obesity-medication benefit — and Oscar's dominant product line is ACA marketplace individual/family plans, which are typically more restrictive than employer plans and frequently exclude anti-obesity medications. Standard Medicare Part D excludes phentermine by statute. Even where excluded, the silver lining is hard to overstate: generic phentermine costs $10–$40 cash. No other FDA-approved weight-loss drug is this inexpensive. Oscar cells are representative composites; verify on Oscar's member drug-search tool.
Coverage is set by your specific plan and formulary. This is a research summary — always confirm with Oscar Health using your member ID.
Key facts
ACA individual marketplace plans are more frequently restrictive on anti-obesity medications than large employer plans — Oscar's primary product is ACA marketplace coverage.
KFF Employer Health Benefits Survey, Oct. 2025
Generic phentermine costs approximately $10–$40 per month cash — the least expensive FDA-approved weight-loss prescription in this cluster.
GoodRx / SingleCare cash-price data, 2026
Medicare Part D has excluded weight-loss agents, including phentermine, since 2006. The 2026 GLP-1 Bridge does not include phentermine.
CMS.gov / Medicare.gov GLP-1 Bridge fact sheet
Medicare vs. commercial coverage
Whether Oscar Health covers Phentermine (Adipex-P / Lomaira) depends heavily on which kind of plan you hold. They follow completely different rules — here's each one, side by side.
Medicare
Part D & Advantage plans
Medicare Part D statutorily excludes phentermine as a weight-loss agent. Oscar has a limited Medicare footprint; this note applies where Oscar offers Medicare plans. Phentermine is NOT in the 2026 Medicare GLP-1 Bridge (July 1, 2026 – December 31, 2027), which covers only specified injectable weight-loss GLP-1s. Medicare members are ineligible for manufacturer copay cards. Generic phentermine at $10–$40 cash is the operative route.
Commercial / Employer
Group & marketplace plans
Oscar Health's primary product is ACA individual and family marketplace plans. Individual marketplace plans are characteristically more restrictive on weight-loss drugs than large employer plans — they frequently exclude anti-obesity medications (GLP-1s and oral AOMs) while sometimes covering diabetes GLP-1s separately. Where Oscar's ACA plans do include a weight-loss benefit, prior authorization where applied requires BMI of 30 or higher, or 27 or higher with a qualifying comorbidity; DEA Schedule IV quantity limits; short-term (~12 weeks) approvals. Oscar has a limited employer/commercial footprint outside the ACA marketplace; Medicaid is not a primary Oscar product line. All cells are representative composites; verify on Oscar's member drug-search tool (hioscar.com).
The 3 boxes you must tick to get approved
Commercial plans that will consider Phentermine (Adipex-P / Lomaira) require prior authorization. Check off what applies to you to see how close you are — this is a guide, not a guarantee of approval.
0 of 3 requirements selected. Meet all 3 and you have a documented case for approval. Missing any one is the most common reason requests are denied.
Your cost, three ways
What Phentermine (Adipex-P / Lomaira) actually costs you swings enormously depending on how it's covered. Here's the realistic range.
Paying cash
Generic phentermine: approximately $40 retail per month, as low as $10 with a discount coupon (GoodRx / SingleCare). Brand Adipex-P and Lomaira cost more; the generic is the near-universal fill.
List price with no coverage — before any manufacturer savings card.
With coverage
Where phentermine is covered on an Oscar ACA plan with an AOM benefit, generic tier co-pays are typically $0–$15 per month. Confirm with Oscar's member drug-search tool.
Typical monthly copay once prior authorization is approved.
No broad manufacturer copay card is available. The Adipex-P copay program was discontinued February 1, 2024. Third-party discount cards (GoodRx, SingleCare) reduce the generic to $10–$40 per month. Some states restrict coupons on DEA Schedule IV controlled substances. All figures are estimates; verify with your plan and pharmacy.
Check YOUR exact coverage in 3 steps
General answers only get you so far. Here's how to confirm your own plan's decision in a few minutes.
- 1
Check Oscar's member drug-search tool to confirm AOM benefit coverage
Log into your Oscar member portal at hioscar.com with your member ID and search for phentermine in the drug-search tool. If no coverage appears, your plan excludes weight-loss drugs — this is common on ACA marketplace plans. Contact Oscar member services (1-855-672-2788) to confirm. Given how inexpensive the generic is, many Oscar members simply pay cash rather than pursue a PA.
- 2
Ask your prescriber about the Schedule IV and short-term-use requirements
Phentermine is a DEA Schedule IV controlled substance approved for approximately 12 weeks. Your prescriber must document your BMI and qualifying comorbidities for a PA if your plan requires one. The short-term nature makes this distinct from GLP-1 weight-loss therapy — set expectations accordingly.
- 3
Use the cash route — the generic is $10–$40 and beats most copays
If Oscar excludes phentermine, request a cash prescription from your prescriber and present a GoodRx or SingleCare coupon at checkout. Generic phentermine typically costs $10–$40 per month — less than most plan copays for specialty drugs. No manufacturer program exists since the Adipex-P card was discontinued in 2024. Confirm that your state permits discount coupons on Schedule IV controlled substances.
Options if Oscar Health won't cover Phentermine (Adipex-P / Lomaira)
A denial isn't the end of the road. These are the paths people commonly explore next — discuss any of them with your prescriber.
Contrave (naltrexone/bupropion) — CurAccess ~$99/month
Contrave is another oral AOM, but there is no generic. The CurAccess program is approximately $99 per month cash — far more than phentermine's generic. Oscar ACA plans also frequently exclude Contrave.
Qsymia generic (phentermine/topiramate ER) — launched 2025
Generic phentermine/topiramate ER (Teva, 2025) is approximately $63 with a coupon. Qsymia requires a REMS program and carries teratogenic risks from topiramate, but offers longer authorized use than standalone phentermine.
Weight-loss GLP-1s (Wegovy, Zepbound) — rarely covered on Oscar ACA plans
Oscar ACA marketplace plans are among the most restrictive on weight-loss GLP-1s. Verify benefit coverage before pursuing a GLP-1 PA at Oscar. If not covered, compounded options without insurance are available.
These options are listed for information only — your own clinician decides what is appropriate for you.
Frequently Asked Questions
Oscar Health covers phentermine only if your ACA marketplace plan includes a weight-loss or anti-obesity-medication benefit — and individual marketplace plans frequently exclude AOM. Standard Medicare Part D also excludes it by statute. The key takeaway: generic phentermine costs just $10–$40 cash, so coverage rarely matters in practical terms. Verify on Oscar's member drug-search tool at hioscar.com to confirm your plan's AOM benefit status.
Yes — ACA individual and family marketplace plans are generally more restrictive on weight-loss drugs than large employer plans. Employer plans can elect an AOM benefit rider; individual marketplace plans are more commonly structured without it. Oscar's primary product is ACA marketplace coverage, which means phentermine exclusions are more common among Oscar members than among those on large employer plans. Always confirm your specific Oscar plan's formulary.
Oscar marketplace plans are generally restrictive on all oral anti-obesity medications. Contrave (no generic; CurAccess ~$99/month cash) and Qsymia (generic ~$63 with coupon) follow the same AOM-benefit-dependent logic as phentermine at Oscar — coverage depends on whether your specific plan includes an AOM benefit. Where excluded, the cash price for all three oral AOMs is far lower than GLP-1s, with phentermine's generic being the cheapest at $10–$40.
All three cover phentermine only with an AOM benefit, and all exclude it on standard Medicare Part D plans. Oscar's distinguishing angle is ACA-marketplace restrictiveness — individual plans exclude AOM more frequently than large employer plans. Aetna's angle is CVS Caremark's standardized BMI PA template. BCBS's angle is multi-company variability and North Carolina Medicaid's favorable non-incretin AOM pattern. In all cases, generic phentermine costs $10–$40 cash.
No broad manufacturer coupon is available. The Adipex-P copay program was discontinued February 1, 2024. Third-party discount cards like GoodRx and SingleCare reduce the generic to $10–$40 at most pharmacies. Some states restrict coupons on DEA Schedule IV controlled substances; verify your state's rules before presenting a coupon. For Oscar Medicare members (limited footprint), manufacturer cards are also unavailable under federal anti-kickback rules.
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Read moreIf Oscar excludes phentermine or you want a longer-term weight-management alternative
You just saw how tangled Phentermine (Adipex-P / Lomaira) coverage can get — auto-rejections, prior authorization, and high cash prices. Curex compounded semaglutide: $199/month equivalent prepaid annually ($2,388 upfront), or $299/month paid monthly. Compounded tirzepatide: $299/month equivalent prepaid annually ($3,588 upfront), or $399/month paid monthly. Commercial rates as of 2026-10-12; compounded products are not FDA-approved and clinical eligibility must be assessed. Curex compounded medications are not the same as Phentermine (Adipex-P / Lomaira). No insurance or prior authorization required; prescription required, subject to provider review.
- Medication + free shipping
- 24/7 provider access
- Medical intake & prescription review
Compounded semaglutide and tirzepatide are not the same medications as Phentermine (Adipex-P / Lomaira) and are not branded or FDA-approved products. Compounded medications have not been approved by the FDA and the FDA has not evaluated their safety or efficacy.
This content is for informational purposes only and does not constitute medical, financial, or insurance advice. Coverage rules, prior-authorization criteria, and copay amounts change frequently and vary by plan, formulary tier, and effective date — always verify current benefits directly with Oscar Health before making any decision. Consult a licensed healthcare provider and your plan administrator for guidance specific to your situation. Curex offers compounded semaglutide and tirzepatide, which are not the same medications as Phentermine (Adipex-P / Lomaira) and are not branded or FDA-approved products; prescription required, subject to provider review. Compounded medications have not been approved by the FDA and the FDA has not evaluated their safety or efficacy.