Onyx Weight Loss vs VitaStir
Onyx Weight Loss and VitaStir both sell semaglutide and tirzepatide; this is how their prices, coverage and records differ.
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Onyx Weight Loss
Best for: starting below a standard dose, with microdose tiers
Visit Onyx Weight Loss →
VitaStir
Best for: semaglutide at $99/month, 63% below the typical price
Visit VitaStir →If you are choosing between Onyx Weight Loss and VitaStir, price alone will not settle it. Both prescribe semaglutide and tirzepatide, so moving from one to the other would not change your drug. They tie at 8.2 on our six-part score.
Onyx Weight Loss vs VitaStir price
Onyx Weight Loss and VitaStir start at the same figure, $99 a month, so the entry price does not separate them. Look at what each price covers and at the per-drug prices below.
Drug by drug: Semaglutide costs the same at both, $99 a month; tirzepatide is cheaper at VitaStir ($99 a month vs $280 a month).
Medications and formats
Both sell semaglutide and tirzepatide.
On format they match: each offers compounded injections.
Where each one treats patients
Onyx Weight Loss lists 8 states, and VitaStir does not publish where it ships.
Pricing
Onyx Weight Loss
'Starting at $228/month' on the GLP-1 Agonist plan, including medication and supplies shipped home. Entry tier only; higher-dose prices are not published.
'Starting at $280/month' on the GLP-1/GIP Agonist plan, including medication and supplies. Entry tier only. Onyx does not name the drug beyond 'GLP-1/GIP.'
$99/month on the GLP-1 Microdosing plan, a low-dose, gradual-start option.
VitaStir
Sale price; regular $399. 30-day supply, physician review included.
Sale price; regular $599. 30-day supply, physician review included.
Single-dose-vial kit, 30-day supply.
Single-dose-vial kit, 30-day supply.
What each price covers
Both prices cover the clinician visit and the medication itself.
Onyx Weight Loss' price also covers shipping, which VitaStir does not claim.
Onyx Weight Loss is silent on lab work and coaching.
VitaStir is silent on shipping, lab work and coaching.
Onyx Weight Loss
Covered by the monthly price
Medication
In the price
Clinician visits
In the price
Shipping
In the price
Lab work
Not stated
Coaching
Not stated
VitaStir
Covered by the monthly price
Medication
In the price
Clinician visits
In the price
Shipping
Not stated
Lab work
Not stated
Coaching
Not stated
Where each one scores higher
Overall they tie at 8.2 out of 10.
Onyx Weight Loss is stronger on trust & safety (7.5 vs 6.5) and support (7.0 vs 5.5).
VitaStir is stronger on value (10.0 vs 9.5) and accessibility (5.0 vs 3.3).
Effectiveness and user experience are within half a point.
Onyx Weight Loss
8.2/10
VitaStir
8.2/10
Value25%
Effectiveness25%
User Experience15%
Trust & Safety15%
Accessibility10%
Support10%
FDA warning letters
Neither Onyx Weight Loss nor VitaStir has an FDA warning letter on record with us.
Features & Coverage
| Feature | Onyx Weight Loss | VitaStir |
|---|---|---|
| Starting Price | $99/mo | $99/mo |
| Features | ✓8 features | 0 features |
| States Available | 8 | Not disclosed |
| Compounded | ✓ Yes | ✓ Yes |
| Brand Name | — | — |
| FSA/HSA Accepted | — | — |
| FDA Warning Letters | None | None |
About Onyx Weight Loss
GLP-1 (semaglutide-type) plans begin at $228/month; GLP-1/GIP (tirzepatide-type) plans at $280/month. There is also a $99/month GLP-1 microdosing option for anyone wanting a gradual-titration start. Onyx Weight Loss runs a nurse-practitioner-led telehealth clinic out of Mooresville, NC, set up by Madalyn Vangile RN and Tasha Vangile FNP-C, and it covers 8 states with HRT and peptides sold beside the GLP-1s. Its partner Strive Pharmacy ships medication and supplies home.
Read our full Onyx Weight Loss review →About VitaStir
VitaStir is a GLP-1 telehealth seller that also sells vitamin and B12 products. Its GLP-1 prices and plan details are not shown on its public pages.
Read our full VitaStir review →Pros & Cons
Onyx Weight Loss
What we like
- Semaglutide costs $99 a month, 46% below the $185 median for compounded semaglutide across the sellers we compare
- Shows its price before the medical questionnaire, so you can compare it without handing over health information
- The monthly price includes the medication, clinician visits and shipping
- We found no FDA warning letters issued to Onyx Weight Loss
Watch-outs
- Serves only 8 states, so check that yours is one of them
- Ask which pharmacy fills the prescription before you pay, so you can check its license
- Its semaglutide and tirzepatide are compounded rather than FDA-approved, so they have not been reviewed by the agency for safety, effectiveness or manufacturing quality
VitaStir
What we like
- Tirzepatide costs $99 a month, 60% below the $250 median for compounded tirzepatide across the sellers we compare
- Semaglutide costs $99 a month, 46% below the $185 median for compounded semaglutide across the sellers we compare
- Shows its price before the medical questionnaire, so you can compare it without handing over health information
- The monthly price includes the medication and clinician visits
- We found no FDA warning letters issued to VitaStir
Watch-outs
- Confirm it serves your state before you start the intake
- Ask which pharmacy fills the prescription before you pay, so you can check its license
- Its semaglutide and tirzepatide are compounded rather than FDA-approved, so they have not been reviewed by the agency for safety, effectiveness or manufacturing quality
Our Verdict
Onyx Weight Loss and VitaStir finish level at 8.2. Choose on the state list and on what each monthly price covers.
Choose Onyx Weight Loss if…
You want starting below a standard dose, with microdose tiers and an opening price near $99 a month.
Choose VitaStir if…
You want semaglutide at $99/month, 63% below the typical price and an opening price near $99 a month.
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Get started →Onyx Weight Loss vs VitaStir: FAQ
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