Ipamorelin vs MK-677
Which should you choose? Here's what you need to know.
The short answer
Ipamorelin and MK-677 are both growth hormone peptides, but they work differently. A selective growth hormone secretagogue that stimulates GH release with minimal effect on cortisol and prolactin. Popular for its clean side-effect profile. Also called Ibutamoren. Taken orally rather than injected, it tells the body to release more growth hormone. Technically a secretagogue, not a peptide, but sold alongside them everywhere. Compare vendor pricing and availability below.
Ipamorelin
Growth HormoneA selective growth hormone secretagogue that stimulates GH release with minimal effect on cortisol and prolactin. Popular for its clean side-effect profile.
MK-677
Growth HormoneAlso called Ibutamoren. Taken orally rather than injected, it tells the body to release more growth hormone. Technically a secretagogue, not a peptide, but sold alongside them everywhere.
Price & availability
Once you've decided which peptide fits your needs, here's how they compare on price and vendor options.
Ipamorelin
MK-677
$15.99
Starting from
$59.99
$15.09
Avg. price per mg
$8.13
59
Vendors selling it
7
74 options
In stock now
6 options
9.0/10
Top trust score
7.0/10
Ready to buy?
Our top-rated vendor for each, based on trust scores, purity testing, and price.
Where does this data come from?
We re-check vendor prices continuously and score vendors on Finnrick blind-test results — samples bought anonymously and sent to a lab, not vendor claims. No vendor can pay to rank higher. See our full methodology.