News
WADA 2027 Prohibited List: What Changes for SARMs, Peptides and PCT Drugs
WADA's 2027 Prohibited List, valid from 1 January 2027, names peptides in S0, adds SLU-PP-332, SLU-PP-915 and seladelpar as metabolic modulators, and adds imlunestrant…
Evidence-first. Sources on every page.
Our methodology- Studies cited and linked
- Evidence level labeled
- Dated data and pages
- Partner links disclosed
MK-677 Center
MK-677 (ibutamoren): the complete evidence file
The human trials, the doses studies used, side effects by level of evidence, the bloodwork to watch, and every MK-677 question we answer.
- Half-life
- Not established
- Furthest trial
- Phase 3
- Human studies
- 17
- WADA
- Prohibited
Questions people ask
- MK-677 and RAD-140 Stack: What the Evidence Shows on Muscle and Recovery
- Is MK-677 Gyno A Myth Or Can It Really Happen?
- MK-677 Side Effects: Is Ibutamoren Safe? What Human Trials Found
- MK-677 for Hair Growth: What the Science Says (Plus a 4-Month Experiment)
- MK-677 vs HGH: How Ibutamoren Compares With Growth Hormone
- My 12-Week MK-677 Log: Week-by-Week Results
- MK-677 Height Growth: Can MK-677 Increase Height?
- MK-677 vs Ipamorelin: Oral vs Injectable GH Secretagogues Compared
SARMs Database
One fact sheet per compound
- MK-677 Ibutamoren GH secretagogue (ghrelin receptor agonist) Half-lifeNot established Furthest trialPhase 3 WADAProhibited EvidenceSuppressionLiver load
- RAD-140 SARM Testolone Selective androgen receptor modulator (SARM), nonsteroidal Half-life~45 h Furthest trialPhase 1/2 WADAProhibited EvidenceSuppressionLiver load
- LGD-4033 SARM Ligandrol Selective androgen receptor modulator (SARM), nonsteroidal Half-life24–36 h Furthest trialPhase 2 WADAProhibited EvidenceSuppressionLiver load
- Ostarine SARM Enobosarm Selective androgen receptor modulator (SARM), nonsteroidal Half-life~14–24 h Furthest trialPhase 3 WADAProhibited EvidenceSuppressionLiver load
- Cardarine GW501516 PPARδ agonist (metabolic modulator) Half-lifeNot established Furthest trialPhase 2 WADAProhibited EvidenceSuppressionLiver load
- Enclomiphene Enclomifene Selective estrogen receptor modulator (SERM); the trans-isomer of clomiphene Half-life~8–10 h Furthest trialPhase 3 WADAProhibited EvidenceSuppressionLiver load
- YK-11 SARM Myostine Steroidal androgen receptor partial agonist (sold and listed as a SARM) Half-lifeNot established Furthest trialNone WADAProhibited Evidence
- S-23 SARM SARM S-23 Selective androgen receptor modulator (SARM), nonsteroidal (aryl-propionamide) Half-lifeNot established Furthest trialNone WADAProhibited EvidenceSuppression
Tools
Work it out with the data
- Compare compoundsAny two side by side: half-life, evidence, suppression.
- PCT & bloodwork plannerWhen to test, and the PCT options studies cover.
- Stack checkerAreas where compounds share a reported concern, the evidence type behind each, and the bloodwork studies tracked.
- Goal finderA few questions, then a reading path for your goal.
- Legality by countryStatus per country, with sources and the date checked.
- WADA & testingWhich compounds are prohibited in sport.
Compare
RAD-140 or LGD-4033? Put any two side by side.
Half-life, research status, study doses, suppression and WADA status, line by line.
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Latest
New and updated guides
Comparison
Tesamorelin vs Ipamorelin: GH Peptides Compared on Evidence, Fat Loss and Side Effects
Tesamorelin is an FDA-approved GHRH analog that cut deep belly fat about 15% in HIV trials. Ipamorelin is an unapproved ghrelin-receptor peptide with no…
Best for
Safest SARMs? What the Evidence Says About Every SARM (2026)
No SARM is proven safe. Ranked by how much is known, ostarine comes first, LGD-4033 second, and most others have no human data at…
Comparison
Ostarine vs MK-677 (MK-2866 vs MK-677): Not the Same Kind of Drug
Despite the similar names, ostarine (MK-2866) is a SARM that acts on the androgen receptor, while MK-677 raises growth hormone through the ghrelin receptor.…
Comparison
Nolvadex vs Clomid: Tamoxifen vs Clomiphene for PCT, Compared
Nolvadex (tamoxifen) and Clomid (clomiphene) are both SERMs that raise LH, FSH and testosterone in men. Tamoxifen also has strong trial data against drug-induced…
Comparison
MK-677 vs Ipamorelin: Oral vs Injectable GH Secretagogues Compared
MK-677 and ipamorelin both act on the ghrelin receptor. MK-677 is taken by mouth and has 17 human trials (including 12-month studies); ipamorelin is…
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