Growth Hormone Peptides 101 · Hacksmith's Free Peptalk Group

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Growth Hormone Peptides 101

I posted this over in the paid community, but wanted to share over here as well. We also have an All Things Growth Hormone Course in the classroom over there that breaks down a lot of components surrounding Growth Hormone and the secretagogues -

Hey everyone! I wanted to put together a quick overview on GH peptides since this comes up a lot. There's a fair amount of confusion around how they work, what to stack, and what to actually expect, so here's an overview of the main questions. Also, I will be pinning this post into the All Things Growth Hormone Course.

Growth Hormone peptides fall into two main categories. The first is the GHRH analogs like Sermorelin, CJC-1295, and Tesamorelin. The second is the GHRPs, also called ghrelin mimetics, like Ipamorelin, GHRP-2, GHRP-6, and Hexarelin.

This is important to understand: BOTH of these categories push your pituitary gland to release growth hormone, but they essentially take different roads to get there. GHRH peptides bind to the GHRH receptor, which is the body's normal "release GH" signal. GHRPs bind to a completely separate receptor called the ghrelin receptor, which will also lead to GH release but through a different pathway. So like I mentioned before, you're getting to the same destination, but taking different routes.

Any of these peptides can be taken alone. You don't HAVE to stack to get results, and plenty of people run something like sermorelin or ipamorelin by itself and see exactly the results they want. It is important to note though that the GHRPs can stimulate appetite, so any time you add one, you may feel that happening. So if that's a concern, ipamorelin by itself wouldn't make much sense. So if you're just starting out, you can definitely just pick one of them.

Now, here's why stacking can be beneficial...

The classic combo is to add a GHRH with a GHRP because they're hitting two different receptors that both lead to GH release. When you stimulate both pathways at the same time, you're basically giving synergy to what they can do to ultimately get better results. You get a bigger GH pulse than either peptide could produce on its own.

Think about it like cookies and milk. Cookies are great. Milk is great. But pairing them together is even better than both alone.

This is why doubling up within the same family doesn't really make sense. Stacking two GHRHs or two GHRPs is just overdoing something unnecessarily.

Also, with any of them, you'll probably hold some water.

Pretty much all GH peptides cause some degree of water retention, and you need to ACCEPT that and understand why and that it is WORTH IT in the end.

When growth hormone rises, IGF-1 also rises, and both of these have an effect on the kidneys. GH activates the renin-angiotensin-aldosterone system and increases sodium reabsorption in the renal tubules (for any who need the technical speak). But to put it simply, your kidneys start holding on to sodium more than they normally would. Sodium is going to pull water along with it, so your extracellular fluid volume is going to likely increase. That's why some people may have a little bit of puffiness and the scale may go up in the beginning. After a few weeks, your body will adjust and that will go back down typically.

Also, you can mitigate this by drinking more water and increasing potassium intake slightly.

How much retention will you get? Honestly it depends on the peptide and the person. One person might bloat more with CJC and another with Tesa, and another may not get any at all! The only way to really know is to try it. And remember, it's temporary.

Overall results tend to be somewhat similar among all of them, but each may be a slight bit different.

Sermorelin is the mildest of the GHRHs. It's pretty gently and well-tolerated and probably won't knock your socks off, but you also probably won't really have negative side effects. You'll probably get better sleep and recovery with mild body recomposition benefits.

CJC-1295 produces a stronger pulse than sermorelin but also comes with more side effects like a flushing feeling which is where you might feel hot, sweaty, heart rate increases, blood pressure increases, etc. It usually passes within 30 minutes or so, but it surprises people the first time it happens.

Tesamorelin is the most expensive of all of them and it also has the best clinical data behind it. If your priority is visceral fat and your budget allows for it, this is my compound of choice.

The GHRPs do bring in the hunger consideration. Because they're binding to the ghrelin receptor, which is your body's natural hunger receptor, they can increase appetite as a side effect. GHRP-6 is the strongest out of all of the GHRPs. So unless you really want to eat and raid the fridge every hour, avoid that one. GHRP-2 is going to sit in the middle in that aspect. Ipamorelin is the cleanest out of the GHRPs with minimal hunger stimulation, and less of a cortisol or prolactin bump that the others may cause. This is why I like the default pairing option with a GHRH to be Ipamorelin.

Also, growth hormone itself reduces visceral fat. So visceral fat should be reduced with any of these that you choose to use.

Hopefully this helps to clarify some things!

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