Onyx Weight Loss Tirzepatide Review: Cost, Named Nurse Practitioners & Honest Verdict (2026)

Onyx Weight Loss is a nurse-practitioner-led telehealth clinic with named founders — Tasha Vangile FNP-C (20+ years) and Stephanie Robison APRN-CNP (27 years) — but no LegitScript certification, and specific drug names never stated on its own site. Every fact here comes from the company's own published program.

What Onyx Weight Loss is

Onyx Weight Loss is a nurse-practitioner-led telehealth clinic, based in Mooresville, NC, offering GLP-1 and GLP-1/GIP weight-loss medications alongside peptides and HRT across 8 states. A Strive Pharmacy partnership implies a compounded 503A-quality supply chain.

What Onyx Weight Loss costs

Semaglutide starts from $228/month and tirzepatide from $280/month, with medication and supplies included. A $99/month GLP-1 microdosing option is available for patients who prefer a gradual titration start.

The brand-vs-compounded question

Onyx Weight Loss's compounded status is inferred, not explicitly disclosed — specific drug names (semaglutide/tirzepatide) are never stated on the website, though a Strive Pharmacy partnership implies compounding. Compounded tirzepatide is pharmacy-made, not itself an FDA-approved finished drug, and was not the specific product studied in the pivotal trials. See our guide to whether compounded tirzepatide is still legal in 2026 for the regulatory picture.

How the care model holds up

Onyx Weight Loss's real strengths: named nurse-practitioner founders with decades of combined experience, a low-cost $99/month microdosing option, an implied Strive Pharmacy 503A supply chain, and a multi-modal clinic model combining GLP-1, peptides, HRT, and nutrition coaching. The trade-offs: only 8 states are served (NC, CO, ME, VT, VA, IA, NH, PA), no LegitScript certification, specific drug names aren't disclosed on the site, labs aren't included or mentioned, and pricing shown as "starting at" with no dose-escalation tiers. As with any GLP-1 program, and especially one that doesn't explicitly name its medication, ask directly which drug you're being prescribed before committing; tirzepatide carries labeled warnings for acute pancreatitis, gallbladder disease, and a boxed thyroid C-cell tumor warning — see our guides on Zepbound side effects, the gallbladder risk, and the thyroid cancer warning.

Does the drug work? (Separate from the provider)

Judge the provider on price, oversight and disclosure; judge the molecule on its trials. Tirzepatide's are strong — roughly 15–21% of body weight over 72 weeks in SURMOUNT-1¹, and better than semaglutide head-to-head² — but they were run on the brand drug at FDA-approved doses. Our tirzepatide evidence guide has the full picture.

The honest verdict

Onyx Weight Loss's named nurse-practitioner founders and multi-modal care model are real positives, but the missing LegitScript badge and vague drug naming are worth asking about directly, and its 8-state footprint is limited. For a provider with a genuinely verified LegitScript seal at a similar price, compare it against Optimized Health or CoreAge Rx. For another provider with a real internal contradiction this review flagged, see OurView Health. See our best tirzepatide providers ranking for the full field.