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SARMs, peptides and nootropics — explained in plain language, then compared across the US vendors that actually stock them. Price, purity testing and reputation, side by side.

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Shop by Category

Peptides, SARMs, Nootropics & PCT

Explore products by category — every listing links out to trusted, compared vendors.

SARMs

SARMs

RAD-140, LGD-4033, Ostarine, S4 and more — full comparisons, cycles and PCT guides.

Shop Now → Peptides

Peptides

BPC-157, TB-500, GHK-Cu, CJC-1295 — protocols, benefits and vendor pricing.

Shop Now → Nootropics

Nootropics

Cognitive enhancers and focus stacks — what the research says and where to buy.

Shop Now → PCT & Recovery

PCT & Recovery

Enclomiphene and more — post-cycle and hormone-recovery compounds, compared by vendor.

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Popular Compounds

Compare Vendors, Not Just Compounds

Every product page breaks down where a compound is sourced from — pricing, purity testing and vendor reputation, side by side.

5 Vendors
RAD-140 Testolone vial

RAD-140

Testolone — one of the most-researched SARMs for lean mass.

Price Range$71.95 – $89.95
Buy Now → SARMs
7 Vendors
BPC-157 peptide vial

BPC-157

Peptide researched for tissue repair and gut health.

Price Range$38.09 – $85.95
Buy Now → Peptides
3 Vendors
Semax vial

Semax

Nootropic peptide studied for cognition and focus support.

Price Range$29.95 – $65.00
Buy Now → Nootropics
4 Vendors
MK-677 (Ibutamoren) vial

MK-677

Growth hormone secretagogue with a long research track record.

Price Range$69.95 – $79.99
Buy Now → SARMs
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About Our Comparisons

Independent. Not Pay-to-Rank.

Vendors don't pay for placement in our comparison tables — rankings are based on price, published purity testing and verified reputation.

Compound X — molecular structure and lab glassware, independent research
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Purity Testing Verified

We check whether a vendor publishes third-party Certificates of Analysis before listing them.

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Price Tracked Regularly

Vendor prices are reviewed on a rolling basis so comparisons stay current.

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Reputation Monitored

We track community feedback and vendor track record before a listing earns a spot in our comparisons.

Research Compound Guides

Browse Articles by Category

Everything you need to make informed decisions about performance compounds — researched and written for serious athletes.

SARMs

SARMs

RAD-140, LGD-4033, Ostarine, S4 and more.

12 Articles →
Peptides

Peptides

BPC-157, TB-500, GHK-Cu, CJC-1295.

10 Articles →
Nootropics

Nootropics

Cognitive enhancers & focus stacks.

8 Articles →
PCT & Recovery

PCT & Recovery

Post-cycle therapy & bloodwork guides.

6 Articles →
Latest Research

Featured Articles

Our most-read guides — fully updated for 2026 with the latest research and user data.

RAD-140 (Testolone) research guide cover
SARMs 8 min read · Updated 2026

RAD-140 Review: Dosage, Results & Where to Buy

The most comprehensive RAD-140 guide online — cycle length, expected gains and verified sources.

Read Article →
Ipamorelin research guide cover
Peptides 8 min read · Updated 2026

Ipamorelin: Muscle Growth Peptide Guide

One of the most-researched GH-releasing peptides — dosing, timing and sourcing.

Read Article →
MK-677 (Ibutamoren) research guide cover
MK-677 10 min read · Updated 2026

MK-677 (Ibutamoren): Full 2026 Guide

The GH secretagogue with the longest research track record — dosing, sleep benefits, sourcing.

Read Article →
Who We Are

Real Research. Honest Comparisons.

Compound X exists because the information online about SARMs, peptides and nootropics is either dangerously wrong or trying to sell you something. We do things differently — and now we show you exactly who to buy from, too.

  • ✓ Vendors are compared side-by-side, not just promoted
  • ✓ Compounds reviewed against latest research, not just anecdotes
  • ✓ Safety-first approach — bloodwork guidance, PCT and harm reduction included
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Compounds Tracked

SARMs, peptides, nootropics and PCT compounds, each with a full research guide.
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Research Articles

Including head-to-head comparisons and ranked buying guides.
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Vendors Compared

Tracked on price, purity testing and shipping — every listing disclosed.
Stay Informed

Never Miss a Review

New guides, vendor comparisons and compound breakdowns every week.

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