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1st Optimal vs Onyx Weight Loss

An in-depth comparison of two leading GLP-1 Providers

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By Ruth Calder · Enforcement Editor
Editorially reviewed & fact-checked against primary sources · How we verify contentLast reviewed
1st Optimal logo

1st Optimal

3.9
★★☆☆☆2/5

Best for: coaching bundled into the price rather than sold separately

Visit 1st Optimal
VS
Onyx Weight Loss logo

Onyx Weight Loss

8.3
★★★★4.2/5

Best for: starting below a standard dose, with microdose tiers

Visit Onyx Weight Loss

Two GLP-1 Providers chasing the same patients, trading off price, geography and what lands in the box differently. On our scoring, Onyx Weight Loss starts at $99/mo, and Onyx Weight Loss finishes ahead, 8.3 to 3.9. What follows: the prices, what each plan actually covers, the six-dimension score, where each one is weak, and who should pick which.

Pricing

1st Optimal

Pricing not publicly listed.

Onyx Weight Loss

Starting doseCompounded
$228/mo
semaglutide

Verbatim: 'Starting at $228/month' (GLP-1 Agonist plan). Includes medication and supplies shipped to home. Entry tier only; higher-dose pricing not disclosed.

Starting doseCompounded
$280/mo
tirzepatide

Verbatim: 'Starting at $280/month' (GLP-1/GIP Agonist plan). Includes medication and supplies. Entry tier only; specific drug name inferred from GLP-1/GIP dual agonist designation.

MicrodoseCompounded
$99/mo
semaglutide

Verbatim: '$99/MONTH' (GLP-1 Microdosing plan). Low-dose gradual-start option.

What’s included

1st Optimal

Covered by the monthly price

Medication

Not stated

Clinician visits

In the price

Shipping

In the price

Lab work

Not stated

Coaching

In the price

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

Score breakdown

Both providers are scored on the same six-dimension framework. The gradient bar marks the stronger side on each dimension.

1st Optimal

3.9/10

Overall

Onyx Weight Loss

8.3/10

Value25%

3.0A
vs
B
9.7

Effectiveness25%

5.0A
vs
B
10.0

User Experience15%

2.0A
vs
B
8.0

Trust & Safety15%

4.0A
vs
B
7.5

Accessibility10%

5.0A
vs
B
3.3

Support10%

5.0A
vs
B
7.0

Features & Coverage

Feature1st OptimalOnyx Weight Loss
Starting Price$99/mo
Features8 features8 features
States AvailableNot disclosed8
Compounded✓ Yes
Brand Name
FSA/HSA Accepted
FDA WarningsNoneNone

About 1st Optimal

Neither a monthly price nor a list of states is published. 1st Optimal operates out of Michigan across telehealth and functional medicine, writing the GLP-1s semaglutide and tirzepatide either as a weekly injection or as a daily oral tablet. Around the prescription it stacks at-home lab testing, interpretation of the blood work, coaching without limit and protocols built individually, all framed as long-term weight loss and longevity. Credentialed providers work virtually, treatment goes to the home, and nothing binds you to a long contract.

Read our full 1st Optimal review →

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 →

Pros & Cons

1st Optimal

What we like

  • The monthly figure covers consult, shipping, coaching
  • No FDA warning letter matched this operator when we searched our enforcement register
  • A live video visit with a clinician is required before a prescription, which is slower than a form and is the more careful intake
  • Baseline bloodwork is required before a prescription

Watch-outs

  • No price appears until the medical intake is complete, so the cost cannot be compared before health information is submitted
  • No state list is on record here, so whether it serves your state cannot be confirmed from this page
  • No dispensing pharmacy is named in our record, so its accreditation cannot be looked up from here

Onyx Weight Loss

What we like

  • Semaglutide at $99 a month, 48% below the $189 median for the same drug and form across this register
  • Publishes a price on its own site before the medical questionnaire, so it can be compared without handing over health information
  • The monthly figure covers medication, consult, shipping
  • No FDA warning letter matched this operator when we searched our enforcement register

Watch-outs

  • Coverage is published for 8 states only, so this may not reach you
  • No dispensing pharmacy is named in our record, so its accreditation cannot be looked up from here
  • 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

Winner: Onyx Weight Loss

Onyx Weight Loss takes it, 8.3 against 3.9, and it is especially strong on starting below a standard dose, with microdose tiers. 1st Optimal is no weak second and may fit you better on coaching bundled into the price rather than sold separately.

Choose 1st Optimal if…

You want coaching bundled into the price rather than sold separately.

Choose Onyx Weight Loss if…

You want starting below a standard dose, with microdose tiers and an opening price near $99 a month.

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8.5

Strut Health

Semaglutide at $99/month, 48% under the register median

7.9

Oak

Semaglutide at $119/month, 37% under the register median

8.8

Found

Tirzepatide at $169/month, 37% under the register median

1st Optimal vs Onyx Weight Loss: FAQ

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