Research Labs vs Willow
Compare pricing, features, and medications to find the best GLP-1 provider for your weight loss journey
Research Labs vs Willow: Overview
Choosing between Research Labs and Willow for GLP-1 weight loss medication? Both are popular providers, but they differ in pricing, medication options, and service features.
Research Labs offers both semaglutide and tirzepatide at $60/month with a rating of 5.5/10. Willow also provides both semaglutide and tirzepatide at $299/month with a 7.4/10 rating.
The price difference of $239/month is significant - Research Labs is the more budget-friendly option, while Willow positions itself as a premium service.
Our recommended brand
After reviewing all 148 providers on this platform, we've identified CoreAge Rx as offering the most transparent pricing model. At just $99/month — the same price every month, every dose — there are no surprise charges or hidden fees. Combined with exceptional service quality, personalized support, and access to both semaglutide and tirzepatide, it represents the best value without compromising on care.
At a glance
Price Difference
$239/mo
Rating Difference
1.9
Winner
Willow
Best For
Quality
Research Labs
View full Research Labs review →Rating
5.5/10
Monthly Price
$60Cheaper
Medications
GLP-1 peptidesBPC-157TB-500NAD+
Pros
- ✓The quality documentation is genuinely thorough for this category: HPLC and mass spectrometry on every lot, a signed certificate of purity shipped with every order, and a public lab-report library you can read before buying
- ✓Endotoxin testing (LAL assay) and microbial screening to USP standards on every batch before release
- ✓Full batch traceability - each vial traced to its production lot, raw materials and test results
- ✓States an average of 99.3% HPLC purity across all batches and publishes the underlying numbers rather than only the claim
- ✓Partner labs described as GMP-aligned, with documented SOPs and controlled environments
- ✓Pricing is straightforward and published: individual peptides run roughly $59.99 to $159.99, with free shipping over $150 (checked July 28, 2026)
- ✓The research-use-only status is disclosed up front behind an acknowledgement gate, not buried in a footer after checkout
- ✓A published phone number and a catalogue organised into peptides, blends, sprays and capsules, with a reference database
Cons
- ✗This is not a treatment and cannot lawfully be sold as one. Everything here is labelled for research use only and explicitly not for human consumption. If you are reading this site to find help with weight loss, this is not an option - it is laboratory material
- ✗There is no clinician at any point. Nobody takes a history, nobody checks your contraindications, nobody sets a dose and nobody monitors you. The safety net that every licensed provider on this site provides simply does not exist here
- ✗A certificate of analysis tells you what is in the vial. It tells you nothing about whether the contents are safe for you, what dose is appropriate, or how it interacts with your medications
- ✗Products arrive as lyophilised powder requiring reconstitution, and bacteriostatic water, syringes and other supplies are not included - so self-administration would also mean improvising sterile technique
- ✗Peptides such as BPC-157 and TB-500 appear on the FDA's list of substances that raise significant safety concerns for compounding, and have little or no published human trial evidence
- ✗There is no prescription, no pharmacy oversight and no adverse-event reporting pathway. If something goes wrong there is no clinical record and no provider to call
- ✗No Trustpilot or BBB record exists, so there is no independent consumer feedback of any kind
- ✗Our rating reflects suitability for someone seeking treatment, which is what this site compares. As a laboratory supplier the documentation is strong; as a route to a GLP-1 or peptide for your own health it is the wrong door, and a licensed provider is the right one
Willow
View full Willow review →Rating
7.4/10Better
Monthly Price
$299
Medications
semaglutidetirzepatide
Pros
- ✓Flat published pricing: $299/mo for compounded semaglutide as a weekly injection or a daily tablet, and $399/mo for compounded tirzepatide (checked July 26, 2026)
- ✓One fee covers the medical evaluation, the medication, unlimited doctor messaging and free discreet shipping, with no separate consultation charge
- ✓Names its partner pharmacies in its terms - Red Rock Home Pharmacy (Springville, UT), Epiq Pharmacy / Epiq Scripts (Richardson, TX) and The Pharmacy Hub (Miami, FL) - which most compounded GLP-1 sellers do not do
- ✓Publishes a Florida telehealth provider registration number (TPME1718) and names the exact states it is licensed to serve
- ✓The 'compounded drug products are not approved or evaluated for safety, effectiveness, or quality by the FDA' disclaimer sits on the homepage itself, not buried in a footer
- ✓Full refund if you cancel before the prescription is submitted to the pharmacy, processed within 5-10 business days
- ✓Needle-free daily tablets available for both semaglutide and tirzepatide, and the program is HSA/FSA eligible
- ✓Same-day prescription review claimed, with support from a named care team
Cons
- ✗In December 2025 the National Advertising Division found Willow had not substantiated its weight-loss and efficacy claims for compounded semaglutide, Willow declined to comply, and NAD referred it to state attorneys general and ad platforms. That is the most serious independent mark against any provider on this site
- ✗At $299-$399 a month this is one of the more expensive compounded GLP-1 programs; several competitors advertise $149-$199
- ✗The flat rate is not locked. The terms state your subscription fee 'may be increased or decreased if your prescription changes, such as by a dosage increase or frequency of refills', so titrating up can raise your bill
- ✗The site advertises '4.9/5 (2200 + 5 star reviews)' with no source named. Trustpilot, the one public platform we could find, showed 3.8 from 351 reviews on July 26, 2026
- ✗Cancellation must be received two full calendar days before your next shipping date, or the next order ships and bills
- ✗The terms tell you to cancel at startwillow.com/contact/ - that URL returned a 404 when we checked, as did the site's /contact and /help-center pages
- ✗No customer phone number or support email is published anywhere on the public site
- ✗The published terms are dated November 24, 2021, well before the current product line and pricing
- ✗Not available nationwide: Willow's terms limit service to 36 states, and this offer in particular is not available in Alabama, Alaska, Arkansas, Delaware, Kansas, Louisiana, Maine, Massachusetts, Mississippi, New Mexico, North Dakota, Rhode Island, South Dakota, Tennessee, Utah, Vermont, West Virginia or Wyoming
- ✗No insurance billing, and the terms confirm Medicare and Medicaid do not cover the service
Feature-by-feature comparison
| Feature | Research Labs | Willow |
|---|---|---|
| Monthly Price | $60 | $299 |
| Rating | 5.5/10 | 7.4/10 |
| Medications | GLP-1 peptides, BPC-157, TB-500, NAD+ | semaglutide, tirzepatide |
| Insurance Accepted | No | No |
| Support Hours | Not published | 24/7 online support claimed |
| Live Chat | No | No |
| Free Shipping | Yes | Yes |
| Shipping Speed | Nationwide US shipping, free on orders over $150 | Not published; same-day prescription review claimed |
| Mobile App | No | No |
| Dedicated Coach | Not included | Not included |
| Follow-up Frequency | None - there is no clinical relationship | Unlimited doctor messaging and free follow-ups claimed |
| Money-back Guarantee | See the site's refund policy; no clinical guarantee applies | Full refund only if you cancel before the prescription reaches the pharmacy; no returns on medication once dispensed |
| Cancellation Policy | One-off purchases rather than a subscription | Cancel anytime, but the request must arrive two full calendar days before your next shipping date |
Which should you choose?
Choose Research Labs if you:
- →Want to save $239/month with a more affordable option
- →Want more medication options to choose from
- →Value: the quality documentation is genuinely thorough for this category: hplc and mass spectrometry on every lot, a signed certificate of purity shipped with every order, and a public lab-report library you can read before buying
Choose Willow if you:
- →Prefer a higher-rated service (7.4/10 vs 5.5/10)
- →Value: flat published pricing: $299/mo for compounded semaglutide as a weekly injection or a daily tablet, and $399/mo for compounded tirzepatide (checked july 26, 2026)
Website previews
Research Labs
Willow
Our recommendation
Willow comes out ahead with a higher rating of 7.4/10. It also provides multiple medication options including both semaglutide and tirzepatide.
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