Head-to-head · WeighScore
Arc-1 vs Willow
The verdict
Willow takes it — 58.2/100 to 56.3/100, but only just.
Willow grades higher on WeighScore, our editorial score across cost value, dose & formulation, clinical oversight, labs & monitoring, fulfillment and contract terms. Telehealth provider offering compounded GLP-1 medications in both tablet and injectable formats. Arc-1 is close behind and may still be the better fit — see the factor split below.
We may earn a commission if you start care through some of these links, at no extra cost to you. It never moves the WeighScore, which is the weighted average of the six factors shown for every provider, and what we write about a provider is the same either way. See our disclosure.
Factor by factor
The same six graded dimensions, side by side. See the methodology.
The numbers
| Metric | Arc-1 | Willow |
|---|---|---|
| WeighScore | 56.3/100 | 58.2/100 |
| Grade | C | C |
| Scorecard rank | #416 | #377 |
| Semaglutide | $200/mo (0.5 mg dose, compounded) | $299/mo (starting dose, compounded) |
| Tirzepatide | $200/mo (2.5 mg dose, compounded) | $399/mo (starting dose, compounded) |
| Coverage | Coverage not published | Coverage not published |
| Brand-name access | Compounded only | Compounded only |
| Oral / sublingual | Injection only | Yes |
Graded #416 · C
Strengths
- Both compounded semaglutide and tirzepatide available
- Per-dose purchasing — no subscription or membership required
- 25% off plus free shipping promotion
- Broader longevity formulary (rapamycin, NAD+, sermorelin)
- LegitScript Certified badge now displayed on product pages
Where it loses points
- No legal entity name or address disclosed
- State availability not disclosed
- No named clinicians or pharmacy partners
- Per-dose pricing still climbs with dose (semaglutide 2.5mg is $549.99/mo, tirzepatide 7.5mg $399.99/mo)
Graded #377 · C
Strengths
- Both semaglutide and tirzepatide available
- Compounded GLP-1 access
Where it loses points
- Limited public information on program details
Also worth a look
Neither is our top-graded pick — CoreAge Rx leads the scorecard
Across all 499 providers, CoreAge Rx grades highest at 91.8/100 (A−). Top of the scorecard: flat transparent pricing, both molecules, nationwide — no teaser-rate games.
Pricing/verification reflect each provider's public disclosures at last grading; the WeighScore is our editorial judgment per the methodology. Prices change — confirm on each provider's site. Not medical advice; see our disclosure.