How HR and Finance Leaders Can Take Control of Soaring GLP-1 Drug Costs
GLP-1 drugs like Wegovy and Zepbound have exploded in popularity for both weight loss and type 2 diabetes. They work, but they’re expensive, often exceeding $1,000 per member per month. Left unchecked, GLP-1 costs will crush your pharmacy spend and drive up health plan premiums, stop-loss rates, and employee contributions. Figure 1 models the budgetary impact of adding Zepbound to the formulary of a self-funded employer with 1224 members. Here’s how HR and Finance Leaders can take control of soaring GLP-1 drug costs.
1. Don’t Rely on PBMs to Manage the Problem
Many PBMs profit when your drug costs go up through spread pricing, rebate retention, and inflated dispensing fees. GLP-1s have become one of their biggest profit centers. If your PBM’s strategy to manage GLP-1s is vague or nonexistent, that is a problem.
Recommendation: Review your PBM contract. Make sure you have access to claims-level rebate data, no spreads, and full visibility into how GLP-1s are covered, reimbursed, and dispensed.
2. Establish Clear Clinical Criteria for Coverage
Approving GLP-1s for every employee who requests them is not financially sustainable. But denying coverage entirely can create backlash and retention issues.
Recommendation: Require prior authorization based on:
- Confirmed diagnosis of type 2 diabetes or BMI ≥30 (or ≥27 with comorbidities)
- Failure of first line therapy (i.e. Metformin) with diagnosis of type 2 diabetes
- Documented history of lifestyle intervention
- Quarterly clinical review to assess improvement (weight loss or A1C)
- Discontinuation if there is no measurable improvement after 6 months
3. Move GLP-1s to the Pharmacy Benefit
Many GLP-1s administered in a clinical setting are billed under the medical benefit, where visibility and control are limited. Rebate capture is also more difficult.
Recommendation: Shift GLP-1 claims from the medical to the pharmacy benefit when possible. This improves formulary control, rebate access, and member-level tracking.

4. Use Tiered Coverage and a Narrow Formulary
Covering every GLP-1 is a waste of dollars. Employers need to focus coverage on the most effective and cost-efficient options.
Recommendation: Work with a fiduciary PBM to build a narrow GLP-1 formulary. Cover one or two preferred options. Require step therapy or exclude others entirely.
5. Explore Alternative Procurement Channels
Some employers are saving thousands per script by sourcing GLP-1s from international mail-order providers.
Recommendation: Evaluate alternate sourcing strategies, especially for weight-loss-only use. Savings can range from 40 to 60 percent per fill.
6. Tie Coverage to Lifestyle Support Programs
Drugs alone won’t solve obesity. Employers should require members to participate in lifestyle or obesity coaching programs as part of their GLP-1 coverage.
Recommendation: Bundle GLP-1 coverage with a medication therapy management (MTM), digital or onsite wellness program. Require active participation for continued access.
Bottom Line
GLP-1s deliver clinical value, but they can quickly become a budget buster if left unmanaged. Self-funded employers cannot afford to be passive. With the right guardrails, procurement strategy, and clinical oversight, you can offer meaningful access while keeping spend in check. If you’re ready to tackle your GLP-1 costs head-on, let’s connect.
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