Last reviewed: September 10, 2026 Last updated: September 10, 2026

Written by: Jay Hastings, CEO of PlexusDx

Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations. He has more than 20 years of experience across healthcare innovation, genomics, laboratory operations, healthcare investing, and strategic finance. His work has included scaling healthcare startups, leading CLIA lab integrations, and helping expand consumer access to precision health tools.

Medically reviewed by: Jayden Lee, PharmD, EMBA

Jayden Lee, PharmD, EMBA, is the PlexusDx Medical Science Liaison with a PharmD and MBA specializing in pharmacogenomics and clinical product development, with a proven ability to bridge the gap between genomic research and practical patient outcomes. Dr. Lee has more than 10 years of professional experience in clinical pharmacy, academia, and research.

PlexusDx publishes this comparison and is one of the providers discussed. We use the same evidence rules for our own program and competing programs.

The short answer

PlexusDx delivers lower month-to-month semaglutide pricing ($189 versus OatMeds' $199), but OatMeds wins month-to-month tirzepatide ($229 versus PlexusDx's $289) and offers significantly lower 12-month costs through prepaid bundles—semaglutide as low as $1,188 annually, tirzepatide $1,596. PlexusDx counters with mid-commitment prepaid plans (3-month and 6-month) that land between OatMeds' monthly and quarterly bundle rates, and holds a verified 4.3-star Trustpilot rating with 83% of reviews at four stars or higher. OatMeds maintains a Trustpilot profile but no rating data was captured in our September 2026 review. Both programs use licensed 503A compounding pharmacies, charge no membership fees, and include medication, provider visits, and shipping in their published prices. The decision turns on whether you value month-to-month flexibility (PlexusDx for semaglutide, OatMeds for tirzepatide) or are ready to prepay 12 weeks at once for steeper savings (OatMeds across both medications).

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At-a-glance comparison

Feature PlexusDx OatMeds
Semaglutide (MTM) $189/month $199/month
Tirzepatide (MTM) $289/month $229/month
Prepaid options 3-month, 6-month 12-week bundles
Lowest sema annual cost $1,788 (6-mo prepaid) $1,188 (Starter bundle)
Lowest tirz annual cost $2,988 (6-mo prepaid) $1,596 (Starter bundle)
Membership fee $0 $0
Trustpilot rating 4.3 stars, 83% ≥4 stars Profile exists, no rating captured
Source pharmacy type Licensed 503A Licensed 503A

All figures verified September 2026. PlexusDx pricing captured July–September 2026; OatMeds pricing captured September 4, 2026 from oatmeds.com/products/glp1-treatments. Compounded medications are not FDA-approved. FDA does not review compounded drugs before marketing for safety, effectiveness, or quality. A licensed clinician determines whether a prescription is appropriate for an individual patient.

Normalized pricing: month-to-month and prepaid bundles

OatMeds structures its pricing around two plan types: a traditional month-to-month subscription and prepaid 12-week bundles labeled "Starter" and "Standard." PlexusDx offers month-to-month, 3-month prepaid, and 6-month prepaid tiers. Both programs include medication, provider visits, and shipping in the published price; neither charges a separate membership fee.

Semaglutide injection

PlexusDx month-to-month: $189/month yields $2,268 over 12 months (our calculation). OatMeds month-to-month: $199/month yields $2,388 over 12 months (our calculation). PlexusDx delivers a $10/month and $120/year advantage in the flexible tier.

PlexusDx 3-month prepaid: $169/month equivalent ($507 per cycle) yields $2,028 over 12 months (our calculation). PlexusDx 6-month prepaid: $149/month equivalent ($894 per cycle) yields $1,788 over 12 months (our calculation).

OatMeds Starter prepaid bundle: $297 upfront for 12 weeks; four cycles per year cost $1,188 (our calculation), or $99/month equivalent (our calculation, prepaid). OatMeds Standard prepaid bundle: $399 upfront for 12 weeks; four cycles cost $1,596 annually (our calculation), or $133/month equivalent (our calculation, prepaid). OatMeds' Starter bundle undercuts every PlexusDx tier by $600–$1,080 annually, but requires paying $297 every three months rather than monthly billing.

OatMeds also lists semaglutide formulations with B12 or glycine at an introductory rate of $179 for the first month, then $199/month for refills (oatmeds.com/products/glp1-treatments, captured September 4, 2026). That first-month rate sits $20 below the plain semaglutide monthly plan and $10 below PlexusDx's month-to-month semaglutide injection. Our research notes flagged one displayed additive figure as potentially inconsistent; we recommend confirming total cost and what "additive" entails at checkout.

Tirzepatide injection

PlexusDx month-to-month: $289/month yields $3,468 over 12 months (our calculation). OatMeds month-to-month: $229/month yields $2,748 over 12 months (our calculation). OatMeds delivers a $60/month and $720/year advantage in the flexible tier—a decisive win for tirzepatide subscribers who want monthly billing.

PlexusDx 3-month prepaid: $269/month equivalent ($807 per cycle) yields $3,228 over 12 months (our calculation). PlexusDx 6-month prepaid: $249/month equivalent ($1,494 per cycle) yields $2,988 over 12 months (our calculation).

OatMeds Starter prepaid bundle: $399 upfront for 12 weeks; four cycles cost $1,596 annually (our calculation), or $133/month equivalent (our calculation, prepaid). OatMeds Standard prepaid bundle: $499 upfront for 12 weeks; four cycles cost $1,996 annually (our calculation), or $166/month equivalent (our calculation, prepaid). OatMeds' Starter tirzepatide bundle costs $1,392–$1,872 less per year than any PlexusDx tirzepatide tier, with the Standard bundle still $992–$1,472 cheaper. The trade-off remains upfront commitment: $399 or $499 every 12 weeks versus PlexusDx's 3-month ($807) or 6-month ($1,494) cycles or month-to-month billing.

Plan Semaglutide 12-mo cost Tirzepatide 12-mo cost
PlexusDx MTM $2,268 $3,468
PlexusDx 3-month $2,028 $3,228
PlexusDx 6-month $1,788 $2,988
OatMeds MTM $2,388 $2,748
OatMeds Starter (prepaid) $1,188 $1,596
OatMeds Standard (prepaid) $1,596 $1,996

All 12-month totals are our calculation based on verified per-cycle or per-month rates. OatMeds prepaid bundles require upfront payment every 12 weeks; PlexusDx prepaid plans bill every 3 or 6 months.

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Service quality and review profiles

PlexusDx holds a 4.3-star rating on Trustpilot, with 79% of reviews at five stars and 83% at four stars or higher (captured September 9, 2026; trustpilot.com/review/plexusdx.com). OatMeds maintains a Trustpilot profile at trustpilot.com/review/oatmeds.com and a Reddit community at reddit.com/r/oatmeds, both verified September 4, 2026, but no aggregate rating or review volume was captured in our indexing pass. When choosing between providers with similar clinical offerings, documented service ratings can inform expectations around responsiveness, shipping consistency, and support accessibility.

Product range and formulation options

Both programs center on compounded semaglutide and tirzepatide injection. OatMeds extends its catalog to include Wegovy and Foundayo (brand oral semaglutide) pills, Zepbound access, and semaglutide formulations with B12 or glycine additives (oatmeds.com/products/glp1-treatments, captured September 4, 2026). PlexusDx offers compounded semaglutide and tirzepatide in both injection and oral-capsule forms, plus a microdose GLP-1 injection protocol at $129/month designed for maintenance or slower titration (plexusdx.com verified July–September 2026). Neither program publishes dose-specific surcharges; PlexusDx explicitly states "same price at every dose," and OatMeds' published grid does not tier pricing by milligram strength.

Plan commitment and billing structure

OatMeds' prepaid bundles require a lump payment every 12 weeks—$297 or $399 for semaglutide Starter/Standard, $399 or $499 for tirzepatide Starter/Standard. That structure delivers the lowest per-month equivalent in this comparison but concentrates cash flow into quarterly cycles. PlexusDx spreads prepaid discounts across 3-month and 6-month cycles; a 6-month semaglutide commitment costs $894 upfront ($149/month equivalent) versus OatMeds' $297 every three months. The annualized cost still favors OatMeds, but the PlexusDx 6-month option requires half as many renewal decisions per year and a lower per-transaction amount than OatMeds' Standard bundle.

Month-to-month flexibility tells the opposite story: PlexusDx semaglutide costs $10/month less than OatMeds, while OatMeds tirzepatide costs $60/month less than PlexusDx. If you expect to pause, adjust medication, or switch providers within the first few months, the no-commitment tier matters more than annualized savings, and the winner depends on which GLP-1 compound you and your provider select.

Choose OatMeds if…

  • You are willing to prepay 12 weeks at once and want the lowest annual cost in this comparison—$1,188/year for semaglutide Starter, $1,596/year for tirzepatide Starter.
  • You prefer tirzepatide on a month-to-month plan and value the $60/month ($720/year) savings over PlexusDx's tirzepatide month-to-month rate.
  • You want access to brand-name options (Wegovy pills, Zepbound) or compounded formulations with B12 or glycine additives in a single program.
  • You are comfortable with a provider that maintains public review channels but for which no aggregate Trustpilot rating was available at the time of our research.

Choose PlexusDx if…

  • You want month-to-month semaglutide at the lower rate in this comparison ($189 versus OatMeds' $199) with no upfront bundle required.
  • You prefer mid-length prepaid commitments (3-month or 6-month) that deliver discounts without quarterly lump payments; PlexusDx 6-month semaglutide costs $1,788/year versus OatMeds' month-to-month $2,388.
  • You value a verified service rating—PlexusDx's 4.3-star Trustpilot profile with 83% of reviews at four stars or higher, captured September 2026.
  • You want the option to switch between injection and oral-capsule forms of the same compound, or to step down to a $129/month microdose maintenance protocol, within one provider ecosystem.
  • You want the same price at every dose, explicitly stated, with no dose-tier complexity at renewal.

Methodology and freshness

PlexusDx pricing was verified from plexusdx.com product pages and the official pricing grid between July 17 and September 10, 2026. OatMeds pricing was captured September 4, 2026 from oatmeds.com/products/glp1-treatments. Review data: PlexusDx Trustpilot profile captured September 9, 2026; OatMeds Trustpilot and Reddit profiles confirmed September 4, 2026. All 12-month cost totals and per-month equivalents for prepaid bundles are our calculation, derived by multiplying the verified per-cycle or per-month rate by the appropriate number of billing periods. We applied the rule that prepaid bundles renew at the same rate (e.g., OatMeds Starter semaglutide at $297 every 12 weeks renews four times per year). Pricing, plan terms, formulary, and eligibility criteria can change; confirm all figures and policies at checkout and during your provider consultation before committing to any program.

Frequently Asked Questions

Does OatMeds offer month-to-month plans or only prepaid bundles?

OatMeds offers both. Semaglutide is available at $199/month month-to-month or via prepaid 12-week bundles starting at $297 (Starter) and $399 (Standard). Tirzepatide runs $229/month month-to-month or $399/$499 for Starter/Standard 12-week bundles. No membership fee applies to any tier.

Which provider has lower tirzepatide costs?

OatMeds wins both month-to-month ($229 vs PlexusDx $289) and prepaid annual cost ($1,596 Starter bundle vs PlexusDx $2,988 for 6-month prepaid). PlexusDx offers 3-month and 6-month prepaid tiers that land between OatMeds' monthly and bundle rates, but OatMeds holds the tirzepatide cost advantage across all comparable commitment lengths.

Are the medications from OatMeds and PlexusDx FDA-approved?

No. Both providers use compounded semaglutide and tirzepatide from licensed 503A compounding pharmacies. Compounded medications are not FDA-approved; FDA does not review compounded drugs before marketing for safety, effectiveness, or quality. A licensed clinician determines whether a prescription is appropriate for an individual patient.

How do the prepaid bundle structures differ?

OatMeds bundles cover 12 weeks and require upfront payment every three months ($297–$499 depending on medication and tier). PlexusDx offers 3-month and 6-month prepaid cycles; a 6-month semaglutide commitment is $894 upfront, billed twice per year. OatMeds delivers lower annualized cost; PlexusDx spreads payments across fewer, larger cycles.

What review ratings do PlexusDx and OatMeds hold?

PlexusDx holds a 4.3-star rating on Trustpilot with 79% five-star reviews and 83% at four stars or higher, verified September 9, 2026. OatMeds maintains a Trustpilot profile and Reddit community, both confirmed September 4, 2026, but no aggregate rating or review volume was captured in our research pass.

Sources

  • PlexusDx pricing and product pages, plexusdx.com, accessed July 17–September 10, 2026
  • OatMeds GLP-1 treatments product grid, oatmeds.com/products/glp1-treatments, captured September 4, 2026
  • PlexusDx Trustpilot profile, trustpilot.com/review/plexusdx.com, captured September 9, 2026
  • OatMeds Trustpilot profile, trustpilot.com/review/oatmeds.com, verified September 4, 2026
  • OatMeds Reddit community, reddit.com/r/oatmeds, verified September 4, 2026

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Compounded medication disclosure: Compounded medications are not FDA-approved. FDA does not review compounded drugs before marketing for safety, effectiveness, or quality. A licensed clinician determines whether a prescription is appropriate for an individual patient. PlexusDx works with licensed 503A compounding pharmacies.

Medical and Editorial Standards

Medical review process: This article was reviewed for medical accuracy, scientific clarity, evidence alignment, and appropriate discussion of genetics, medications, supplements, biomarkers, and health-related claims.

Sources and evidence: PlexusDx educational content is developed using peer-reviewed research, clinical literature, reputable medical references, and, where applicable, public health or regulatory guidance. References are included at the end of the article when scientific, medical, or health-related claims are discussed.

Commercial transparency: PlexusDx offers genetic testing, blood biomarker testing, personalized supplement recommendations, and related precision wellness services. Product mentions are intended to help readers understand available options and should not be interpreted as medical advice.

Important disclaimer: PlexusDx educational content is for informational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about medications, supplements, genetic testing, lab testing, or health-related care.

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