PlexusDx review

What it is

PlexusDx is a US telehealth platform running two prescription lines and a genetic-testing business alongside them. Weight loss covers a microdose GLP-1 at $129/mo, compounded semaglutide from $149/mo, compounded tirzepatide from $249/mo and a combination protocol it calls GLP-Squared, across seven programs. Longevity covers eight programs: NAD⁺, sermorelin, MIC B12, glutathione, methylene blue, GHK-Cu Rx, Lipo C and PT-141. Its genetic side sells methylation, diet and nutrition, and detoxification reports from a cheek swab. An independent US-licensed clinician reviews each intake, and compounded medication comes from state-licensed pharmacies.

How it works

Asynchronous, program-shaped, and clearer than most about what a price covers. Each longevity program is labelled all-inclusive, the site states that an independent clinician reviews your intake and writes a prescription if you are eligible, and ongoing provider check-ins are stated as included rather than billed. It claims licensed providers in all 50 states, though without an enumerated list, and displays an HSA/FSA payment option. Two things to keep in view. First, the genetics framing does real work in the marketing and very little in the care pathway: the Precision Peptide genetic test is sold as a welcome-gift add-on at $99 against a $298 list price, offered after your first program order, so nothing about your initial prescription is genetically informed unless you separately buy in. Second, the specific compounding pharmacies are never named — only described as state-licensed — and no individual clinician or medical director is published. There is also a mismatch on the page itself worth noticing: the Longevity category headline reads "starts at $99/mo" while every named program on that page starts at $129, so confirm which product the $99 belongs to before planning around it.

Pricing transparency

Published per program and stated as all-inclusive, which is the structure this board most often lacks. On the longevity side: NAD⁺ from $129/mo, described as the anchor program; sermorelin from $129/mo; GHK-Cu Rx at $139/mo; PT-141 at $189/mo; with MIC B12, glutathione, methylene blue and Lipo C completing the eight. Provider check-ins are included. On the weight-loss side, microdose GLP-1 is $129/mo, semaglutide starts at $149/mo, tirzepatide and GLP-Squared start at $249/mo — but those are GLP-1 figures and are not peptide or NAD⁺ prices. The genetic test is a separate $99 charge unlocked after a first program order, discounted from a stated $298; treat that as an add-on, not as a bundled benefit. Two things to ask before ordering: what the monthly shipment contains, since neither dose nor vial size is stated beside any program price, and why the category headline advertises a $99 starting figure that no named program matches.

Branded vs compounded

Compounded; not FDA-approved. Prescription required only if a licensed provider finds it appropriate. PlexusDx states in its own words that its compounded medications are not FDA-approved and have not been evaluated by the FDA for safety, effectiveness or quality, that it offers no branded options, and that medication is dispensed from state-licensed pharmacies — none of which it names. Compounded sterile products are not reviewed by the FDA for purity and potency the way approved drugs are. On evidence, the eight longevity programs are not eight equivalent purchases. Sermorelin is a GHRH analogue with a real mechanism and thin long-term human outcome data. Injected NAD⁺ has no controlled human outcome trials; the oral precursors NR and NMN are the forms with human data and they raise a blood level. GHK-Cu and glutathione have essentially no controlled human outcome data. Methylene blue is an approved drug for methaemoglobinaemia being sold here for cognitive and mitochondrial claims that have no controlled human outcome trials behind them, and it interacts seriously with serotonergic medications including SSRIs — raise every medication you take at intake. PT-141 is approved for one narrow indication in premenopausal women, so other prescribing is off-label. Individual results vary.

Pros and watch-outs

The evidence behind what PlexusDx prescribes

We grade the molecules, not the marketing. Here is what the human data actually shows for each thing on their menu.

• Sermorelin: a real GHRH drug, read against the anti-aging pitch

  An approved growth-hormone-releasing analog with a pediatric track record — and a longevity case built more on biomarkers than outcomes.

• NAD+ precursors (NR and NMN): what the human trials actually show

  They raise NAD+ and look safe short-term — but human evidence is surrogate-marker level, and no trial shows they extend healthspan.

• GHK-Cu: the copper peptide between real skincare and overclaim

  A decades-deep molecule with a credible topical story — and systemic anti-aging claims that outrun the human data.

• Glutathione: the master antioxidant, and where the evidence actually is

  Oral glutathione really does raise your body stores (a 6-month RCT proved it) — but the longevity and detox claims are unproven, skin-lightening is modest, and IV glutathione is the most marketed, least evidenced route. The precursors may be the smarter bet.

• PT-141 (bremelanotide): the evidence on a research-popular peptide that is actually FDA-approved

  Bremelanotide (Vyleesi) is FDA-approved for HSDD in premenopausal women, with phase-3 trial evidence. A straight read of what's proven — and where off-label use goes beyond it.

• Methylene blue: the longevity 'biohack' that's actually a drug

  Low-dose methylene blue has a plausible mitochondrial mechanism and a real single-dose memory signal — but it's an FDA-approved drug, not a supplement, its anti-aging claims are preclinical, and it can cause fatal serotonin syndrome with antidepressants.

How PlexusDx compares

A few alternatives worth a look, depending on what you’re optimizing for.

• PRPreventiveMD

  NAD⁺ at a published all-in price from a platform that tells you up front whether it can treat you

  See PreventiveMD →
• PAPauseRX

  NAD⁺ buyers who want a named 503A pharmacy and a named prescribing network

  See PauseRX →
• PEPepHaūs

  People who will pin the actual NAD⁺ monthly rate down in writing before intake

  See PepHaūs →