Does Aetna Cover Phentermine (Adipex-P / Lomaira)?
The verdict
Conditional on most plans
Aetna's pharmacy benefit is managed by CVS Caremark, and phentermine is covered only when the plan includes a weight-loss or anti-obesity-medication benefit. Aetna plans with an AOM carve-out exclude it entirely; standard Medicare Part D excludes it by statute. Where coverage applies, CVS Caremark uses the same BMI-based PA template it applies to Contrave and Qsymia: BMI of 30 or higher, or 27 or higher with a comorbidity. Phentermine is a DEA Schedule IV controlled substance approved only for short-term use (~12 weeks). Because the generic costs $10–$40 cash, most Aetna patients pay out of pocket rather than navigate a PA for a brief course of treatment. Aetna cells are representative composites; verify on the CVS Caremark member portal or Aetna's drug-search tool.
Coverage is set by your specific plan and formulary. This is a research summary — always confirm with Aetna using your member ID.
Key facts
CVS Caremark applies the same BMI ≥30 (or ≥27 + comorbidity) AOM PA template to phentermine, Contrave, and Qsymia.
CVS Caremark formulary and PA guidelines (composite)
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 Aetna 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. This applies to all Aetna Medicare Advantage and Part D plans (Aetna administers Medicare Advantage plans nationally). 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 — Wegovy formulations, Foundayo, and the Zepbound KwikPen. Medicare members are ineligible for manufacturer copay cards. Generic phentermine at $10–$40 cash is the operative route.
Commercial / Employer
Group & marketplace plans
Aetna commercial and employer plans (administered by CVS Caremark) cover phentermine only if the employer group has elected an AOM benefit. Many have not — per the 2025 KFF Employer Health Benefits Survey, only 19% of firms with 200+ workers covered weight-loss drugs in their largest plan. Where covered, CVS Caremark applies its standard AOM prior authorization template: BMI of 30 or higher, or 27 or higher with a qualifying comorbidity; concurrent behavioral or dietary program documentation; DEA Schedule IV quantity limits; short-term (~12 weeks) approvals. A possible step-therapy requirement also applies on some plans: CVS Caremark may require a phentermine (or Contrave) trial before approving a GLP-1 like Wegovy. ACA marketplace plans (Aetna CVS Health) frequently exclude AOM. Aetna Better Health state Medicaid plans: coverage of oral AOMs is state-dependent and varies by Aetna's state Medicaid contracts. All cells are representative composites; verify on the CVS Caremark member portal (caremark.com) or aetna.com drug-search.
The 4 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.
Meet all 4 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 are more expensive; 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 Aetna plan with an AOM benefit, generic tier co-pays are typically $0–$15 per month. Confirm your specific tier on the CVS Caremark member portal or aetna.com.
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. 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 CVS Caremark or Aetna's drug-search tool to confirm AOM benefit status
Log into caremark.com or aetna.com with your Aetna/CVS Caremark member ID and search for phentermine. If no coverage appears, your plan has an AOM carve-out. Also look for any step-therapy notes that would require phentermine before a GLP-1 approval. Contact Aetna member services (1-888-232-8662) or CVS Caremark (on the back of your ID card) if results are unclear.
- 2
Weigh the PA effort against the $10–$40 cash price
Because phentermine is a short-term drug and the generic is $10–$40 cash, many Aetna patients find it faster and cheaper to skip the PA and pay cash. If you expect to need a phentermine trial to access a GLP-1, ask your prescriber to document the trial clearly from the start — fill records and progress notes support a subsequent GLP-1 PA at CVS Caremark.
- 3
If excluded, fill the generic cash at a retail pharmacy
Ask your prescriber for a cash prescription for generic phentermine. Present a GoodRx or SingleCare coupon at checkout for $10–$40 per month. No manufacturer program exists since the Adipex-P card was discontinued in 2024. Verify that your state permits discount coupons on DEA Schedule IV controlled substances before presenting one.
Options if Aetna 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 covered under the same CVS Caremark AOM PA template as phentermine where Aetna has an AOM benefit. No generic exists; the CurAccess cash program is approximately $99 per month — significantly more than phentermine's generic. Contrave carries a bupropion boxed warning for suicidality.
Qsymia generic (phentermine/topiramate ER) — launched 2025
A generic phentermine/topiramate ER entered the market in 2025 (Teva), approximately $63 with a coupon. Qsymia requires a REMS program and carries teratogenic risk from topiramate, but offers longer authorized duration than standalone phentermine.
Wegovy (semaglutide) — CVS Caremark preferred weight-loss GLP-1
Aetna's CVS Caremark made Wegovy the preferred weight-loss GLP-1 effective July 2025, with a BMI ≥35 threshold for weight-loss-only PA. If your Aetna plan has a weight-loss benefit and you meet the BMI threshold, Wegovy may be the preferred longer-term option — though phentermine step-therapy may be required first on some plans.
These options are listed for information only — your own clinician decides what is appropriate for you.
❓Frequently Asked Questions
Aetna (via CVS Caremark) covers phentermine only if your specific plan includes an anti-obesity-medication benefit. Employer-sponsored plans frequently carve out AOM coverage, and Medicare Part D excludes it by statute. CVS Caremark applies a BMI-based PA (BMI ≥30 or ≥27 + comorbidity) where coverage exists. Because the generic costs $10–$40 cash, most Aetna patients skip the PA and pay out of pocket. Verify on caremark.com or aetna.com.
No. Medicare Part D excludes phentermine as a weight-loss agent by statute. This applies to all Aetna Medicare Advantage plans. Phentermine is not in the 2026 Medicare GLP-1 Bridge, which covers only specified injectable weight-loss GLP-1s. For Aetna Medicare Advantage members, generic phentermine at $10–$40 cash is the only route; manufacturer copay cards are unavailable under federal anti-kickback rules.
Some Aetna/CVS Caremark plans require a documented trial of phentermine or Contrave as step-therapy before approving a weight-loss GLP-1 like Wegovy or Zepbound. This is plan-dependent — verify your specific plan's PA requirements on caremark.com. At $10–$40 for the generic, the phentermine step is inexpensive even paid cash. Document the trial carefully with your prescriber to support a subsequent GLP-1 PA.
The core logic is the same for all three — phentermine is covered only if the plan includes an AOM benefit. Aetna's distinguishing feature is CVS Caremark's standardized BMI PA template (the same template used for Contrave and Qsymia). UHC's (OptumRx) angle is step-before-GLP-1 gateway mechanics. BCBS's angle is multi-company variability plus North Carolina Medicaid's favorable non-incretin AOM pattern. In all cases, the generic is $10–$40 cash.
No broad manufacturer coupon exists. The Adipex-P copay program was discontinued February 1, 2024. Third-party discount cards such as GoodRx and SingleCare reduce the generic to $10–$40 at most pharmacies. Note that some states prohibit discount coupons on DEA Schedule IV controlled substances; check your state's rules before using one.
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Read moreIf Aetna excludes phentermine or you want a longer-term weight-management option
Phentermine is a short-term Schedule IV drug — not a maintenance strategy. Curex offers compounded semaglutide from $49/month and compounded tirzepatide from $149/month at getcurex.com/cl/glp — no insurance, no prior authorization. Compounded semaglutide and tirzepatide are not the same medication as phentermine (Adipex-P / Lomaira). 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 Aetna 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.