Function Health vs Knownwell
A detailed head-to-head comparison of Function Health and Knownwell — pricing, peptides, consultation models, and patient reviews.
At a Glance
RatingNo reviews
Starting PriceN/A
Peptides2
ConsultationHybrid
Lab TestingNo
Shipping3-5 business days
Pros
- 100+ biomarker panel at ~$499/year is genuinely competitive
- Testing-first approach means GLP-1 prescriptions (and other treatments) are grounded in actual metabolic data, not just a questionnaire
- Physician interpretation built into results makes the data actionable for patients without a clinical background
- Strong credibility through association with physicians like Dr. Mark Hyman and the longevity/preventive medicine community
- Annual retesting creates a longitudinal health picture that most patients have never had access to before
- Platform is useful independent of any prescription
Cons
- Not designed for patients who simply want a fast path to a GLP-1 prescription
- The annual membership fee (~$499) is charged before any prescriptions are issued, which may not appeal to patients primarily motivated by medication access
- GLP-1 prescription availability is secondary to the testing mission and should be verified
- The platform skews toward patients who are health-data-oriented; patients who find extensive lab data overwhelming or anxiety-inducing may not enjoy the experience
- Geographic availability for prescription services may be more limited than for testing
RatingNo reviews
Starting PriceN/A
Peptides2
ConsultationHybrid
Lab TestingNo
Shipping3-5 business days
Pros
- Board-certified obesity medicine physicians provide a level of clinical specialization not available on most telehealth platforms
- Hybrid model allows in-person examination for complex cases, medication intolerance evaluation, and physical assessment
- Insurance-accepted model reduces out-of-pocket costs compared to cash-pay competitors
- Full GLP-1 formulary including brand-name Wegovy and Zepbound, insulating patients from compounding supply disruptions
- Prior authorization support included
- Appropriate for patients with significant comorbidities (T2D, hypertension, sleep apnea) who need specialist-level management
Cons
- Geographic availability is limited to select Northeast markets; not a national platform as of March 2026
- Insurance-based model means access depends on plan participation and prior authorization approval
- Not the fastest or cheapest path to a GLP-1 prescription for patients who simply want access and have no comorbidities
- In-person visit requirement (when clinically appropriate) is a barrier for patients who cannot travel to a clinic
- Limited public information on cash-pay pricing for patients without covered insurance
Pros & Cons
Peptide Pricing Comparison
| Peptide | Function Health | Knownwell |
|---|---|---|
| Semaglutide | Price unavailable | Price unavailable |
| Tirzepatide | Price unavailable | Price unavailable |
Frequently Asked Questions
Is Function Health or Knownwell better?
Function Health offers 2 peptides and hybrid consultations. Knownwell offers 2 peptides and hybrid consultations. The best choice depends on which peptides you need, your budget, and preferred consultation model.
Which is cheaper, Function Health or Knownwell?
See the pricing table above for a detailed comparison.