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WeighLab

CoreAge Rx vs Onyx Weight Loss

Compare the prices, treatment options and tradeoffs that matter before you choose a GLP-1 program.

By The WeighLab Bench. Provider verification dates appear below.

Onyx Weight Loss

Provider comparison

Patients in one of its nine covered states who want a small clinic with scheduled consultations and ongoing provider support.

Semaglutide / month
Not disclosed
Tirzepatide / month
Not disclosed
Index 51/100 · Grade CChecked October 2026

We may earn a commission if you sign up through a provider link, at no extra cost to you. Compensation does not change scores. How we earn money.

The comparison in brief

CoreAge Rx has the higher Cost-Efficiency Index: 94/100 versus 51/100. That is a value comparison under our published methodology, not a measure of medical suitability or a guarantee of results.

Check the difference in state access

CoreAge Rx
All 50 states
Onyx Weight Loss
9 states

The better fit depends on what is included in your quote. A lower advertised price can require prepayment, apply to a starting dose or leave out a separate fee.

How the comparison is scored

Costs & coverage

Published prices with their terms intact. Annual estimates account for billing frequency and known fixed required fees; they are not a treatment quote.

CoreAge Rx

Onyx Weight Loss

Semaglutide / month
CoreAge Rx: $99/mo
Onyx Weight Loss: Not disclosed
Tirzepatide / month
CoreAge Rx: $149/mo
Onyx Weight Loss: Not disclosed
Semaglutide / year (modeled)
CoreAge Rx: $1,188
Onyx Weight Loss: —
Tirzepatide / year (modeled)
CoreAge Rx: $1,788
Onyx Weight Loss: —
State availability
CoreAge Rx: All 50 states
Onyx Weight Loss: 9 states
Oral / sublingual option listed
CoreAge Rx: Not listed
Onyx Weight Loss: Not listed
Brand-name access listed
CoreAge Rx: Not confirmed
Onyx Weight Loss: Not confirmed
Provider facts checked
CoreAge Rx: October 2026
Onyx Weight Loss: October 2026

Comparing different billing plans? See what a GLP-1 monthly price can leave out, or calculate the monthly cost.

Which program fits your priorities?

The strengths and limitations behind each provider's score. Read the full review before deciding.

CoreAge Rx

Anyone who wants one flat monthly price they can plan a full year around, on either molecule, without signing a contract.

Reasons to consider it

  • One price at every dose: semaglutide is $99 from 0.25 mg up to 2.5 mg, and tirzepatide is $149 from 2.5 mg up to 15 mg
  • No membership fee, no insurance needed and no long-term contract, and the price you lock in at checkout stays put as your dose rises
  • If the doctor decides a prescription isn't right for you, CoreAge refunds the medication portion of your payment

What to weigh up

  • Some programs we track publish lower semaglutide prices. Compare billing terms, dose pricing and required fees before choosing.
  • You pay before the doctor reviews your case, and if you aren't approved the FAQ promises a 100% refund while the refund policy keeps a $50 to $100 consultation fee
  • All sales are final once medication ships, because state and federal law don't allow medication returns

Onyx Weight Loss

Patients in one of its nine covered states who want a small clinic with scheduled consultations and ongoing provider support.

Reasons to consider it

  • Publishes a nine-state service list
  • Offers weight-loss, hormone and peptide services through one clinic
  • Names its founders and clinical team

What to weigh up

  • No GLP-1 program prices are published
  • No physician medical director or dispensing pharmacy is named
  • The oral weight-loss alternatives do not identify an oral GLP-1 medication

Explore the six scoring factors

Scores run from 0 to 100. A higher factor score reflects our published value criteria; it is not a clinical endorsement.

CoreAge RxOnyx Weight Loss
Normalized Cost/Month
CoreAge Rx:
93/100
Onyx Weight Loss:
45/100
Price Transparency
CoreAge Rx:
97/100
Onyx Weight Loss:
54/100
Nationwide Access
CoreAge Rx:
98/100
Onyx Weight Loss:
42/100
Formulation Options
CoreAge Rx:
84/100
Onyx Weight Loss:
40/100
Clinical Oversight
CoreAge Rx:
90/100
Onyx Weight Loss:
76/100
Contract Flexibility
CoreAge Rx:
95/100
Onyx Weight Loss:
55/100

Before you sign up

  • Confirm your totalAsk about dose changes, membership, labs, shipping and cancellation terms.
  • Check treatment accessState coverage and medical eligibility can differ by medication and formulation.
  • Understand the medicationCompare compounded and brand-name options. Compounded drugs are not FDA-approved.

Keep comparing

Choose a different comparison

Provider information reflects public disclosures at the verification dates shown. Prices and availability change; confirm current terms before paying. This comparison is for information, not medical advice. A licensed clinician determines whether treatment is appropriate.