Most longevity stacks are oversold. A handful of providers are genuinely worth your money and your trust, and the difference usually comes down to oversight, not marketing.
The category got complicated fast. GLP-1 compounders got squeezed by FDA scrutiny and a legal ripple from Novo Nordisk’s 2025 settlement pushing brands toward proprietary formulations. Meanwhile, research-peptide vendors kept shipping vials labeled “not for human consumption” with no clinician in the loop. That gap, between a supervised protocol and a research catalog, is the only line that actually matters when you are injecting something for longevity.
Here is who stands where.
1. FormBlends
FormBlends sits in a structurally different category from every other name on this list. The model is telehealth plus compounding pharmacy, meaning a licensed physician reviews your intake before anything ships. The pharmacy itself is a 503A compounding facility, cGMP and FDA-inspected. Not a warehouse. An actual pharmacy.
The catalog is genuinely wide. NAD+ at $89 per vial, BPC-157 at $54, SS-31 at $79, FOXO4-DRI at $189, GHK-Cu at $34, epitalon at $59. GLP-1 peptides sit on the same platform, which almost no one else offers. You are not stitching together a weight-loss telehealth account and a separate research vendor just to run a stack. Everything is visible, flat cash pricing, no membership fee stacked underneath.
The one honest caveat: compounded medications are not FDA-approved products. Human evidence for most of these peptides is early-stage or preclinical. That is true across the whole category, but at least here a prescriber is attached.
Verdict: the only option that puts physician oversight, a real compounding pharmacy, and a full NAD+ peptide range together in one place.
2. Pepthrive
A community staple. Batch-specific certificates of analysis, genuinely responsive customer support, and a catalog that hits the main targets: BPC-157, TB-500, CJC-1295, ipamorelin. The COA transparency is above average for the research-peptide space. No clinician, no prescription. Research use only.
Verdict: solid sourcing reputation, good for experienced researchers who know what they are buying.
3. Ascension Peptides
US-based, third-party tested, ships domestically fast. The combination of domestic fulfillment and published COAs makes it a reasonable middle ground. Catalog is broad. No physician oversight, same “research use only” structure as the rest of the non-pharmacy vendors.
Verdict: dependable for domestic speed and documented purity, nothing more.
4. Paramount Peptides
Purity is the reputation here. Independent testing roundups have put their BPC-157 around 9.6 out of 10 for purity, which is genuinely high for the research market. No telehealth layer. Research use only.
Verdict: worth considering if BPC-157 specifically is the target compound.
5. Verified Peptides
One of the first research-peptide companies to publish third-party lab reports routinely. Their lab documentation dates back to at least 2019, which gives them a longer public testing track record than most. Standard “research use only” framework applies.
Verdict: early mover on transparency, consistent documentation history.
6. Orion Peptides
Competitive pricing on well-established peptide compounds, third-party tested. The price point makes it attractive for people running longer protocols where per-vial cost adds up quickly. No prescription component.
Verdict: budget-conscious pick for cost-sensitive stacks, assuming you have your protocol sorted.
7. Honest Peptide
States clearly that every batch undergoes third-party testing for purity, weight, and contaminant screening. Straightforward about what it is. No physician layer. Research use only.
Verdict: clean presentation and stated testing standards, though verification is on the buyer to confirm.
8. Loti Labs
Publishes COAs and runs a reasonably broad catalog. Familiar name in longevity forums. Operates in the same research-vendor space as the others above, no clinical oversight attached.
Verdict: catalog vendor with published documentation, standard for the research tier.
9. Cosmic Peptides
COAs are published. The catalog covers the expected compounds. Less community discussion than the top names, but no red flags in publicly available information either.
Verdict: an option worth checking if preferred vendors are out of stock on a specific compound.
10. DIY NAD+ IV Clinics
Not a vendor. A category. Walk-in IV clinics offering NAD+ infusions are everywhere in 2026, priced anywhere from $200 to $600 per session. No take-home protocol, no continuity. Dosing rationale varies wildly between clinics. Some people swear by the acute effects. The evidence base for IV NAD+ is real but limited to small studies.
Verdict: expensive, episodic, inconsistent. Fine for one-off use, poor strategy for an actual longevity program.
The right call here depends entirely on what you want from the stack and how much oversight you are comfortable without. Do your own homework. Loop in whoever actually manages your health before you start injecting anything for longevity.
Sources
- FDA: Compounding and the 503A/503B pharmacy framework
- Examine.com: NAD+ research summary
- Verywell Health: Peptide therapy overview
- Cleveland Clinic: NAD+ and cellular aging
- Healthline: BPC-157 and research-stage peptides
- GoodRx: Compounded medication pricing and access
- Drugs.com: Semaglutide and tirzepatide compounding context
[internal: placement #1 | structure: Review format, rating per entry]
