Dosing Protocols for Peptides

The Biggest Mistake You Can Make With Peptides

Let’s get one thing straight. With most peptides, especially the growth hormone secretagogues, more is not better. It’s just more expensive.

I’ve seen guys in forums talking about using 500mcg of Ipamorelin, and it makes me physically cringe. You are literally just throwing money away. The receptors these peptides target have a saturation point. Hitting them with a dose that’s 3-5x the saturation level doesn't give you 3-5x the benefit. You get a marginally better response for an exponentially higher cost and often, more side effects.

Understanding this concept—receptor saturation—is the first and most important step to building an intelligent protocol. You have to know the mechanism before you can determine the dose. We're not just blindly injecting stuff; we're trying to achieve a specific biological response.

Saturation vs. Half-Life: The Two Rules That Matter

Every dosing question boils down to two concepts: saturation and half-life.

Saturation Dose: This is the amount of a peptide required to fully engage its target receptors and produce a maximal (or near-maximal) response. For the GH secretagogues (GHRHs and GHRPs), research has pinned this down pretty well. The magic number for a full response from the pituitary is around 1 mcg per kg of bodyweight, which is why the standard dose across the board settled at 100mcg. A 250 lb lifter (113kg) might technically get a slightly better pulse from 113mcg than 100mcg, but the difference is trivial. Dosing 250mcg, however, shows almost no additional benefit over 100mcg. You've already flipped the switch all the way on.

Half-Life: This is simply how long a compound sticks around in your system before half of it is eliminated. This dictates your dosing frequency. A peptide with a short half-life needs to be administered more often to maintain stable levels or to time its effects properly. A peptide with a long half-life gives you more flexibility.

• Mod GRF 1-29: Half-life is about 30 minutes. This is why you pin it and get a fast, sharp GH pulse. It's in and out.
• CJC-1295 with DAC: The DAC (Drug Affinity Complex) extends the half-life to about 8 days. This is why it’s dosed once or twice a week. It creates a steady, elevated baseline of GH, what we call a 'GH bleed'.

So, why would you choose one over the other? It depends on your goal. Are you trying to mimic the body's natural pulsatile release of GH (better for lean mass, some argue), or do you want a constant elevation (potentially better for recovery and fat loss)? The half-life dictates the protocol.

Dosing by Category: Secretagogues vs. Healing Peptides

Not all peptides work the same way, so we can't dose them the same way. We can generally split the most common ones into two buckets: GH secretagogues and tissue repair peptides.

GH Secretagogues (GHRHs & GHRPs)

These work by telling your pituitary to release more growth hormone. The most common strategy is to combine a GHRH (like Mod GRF 1-29) with a GHRP (like Ipamorelin or GHRP-2). They work on different receptors but have a synergistic effect, meaning the GH pulse from the combination is greater than the sum of the two parts used alone. 1 + 1 doesn't equal 2 here; it equals 3 or 4.

The standard, effective, and cost-efficient dose is 100mcg of your GHRH + 100mcg of your GHRP, administered 1-3 times per day. The most effective times are post-workout, pre-bed, and sometimes upon waking on an empty stomach.

Tissue Repair Peptides (BPC-157 & TB-500)

Dosing for these compounds is different. We're not trying to trigger a brief pulse from a gland; we're trying to maintain an effective concentration of the peptide at a specific site of injury to promote healing over time. Saturation isn't the main concern. Instead, it’s about sustained local concentration.

• BPC-157: The most common protocol is 250-500 mcg, once or twice a day. For a nagging tendon, many users report better results injecting subcutaneously as close to the injury as possible. The idea is to flood the local tissue with the peptide. For gut health, the same dose taken orally can be effective because BPC-157 is one of the rare peptides that's stable in stomach acid.
• TB-500: This one is a bit different. TB-500 is the synthetic fragment of Thymosin Beta-4, a protein that's present throughout the body. The goal here is systemic, not local. Protocols often involve a 'loading phase' of 2-2.5mg twice a week for 4-6 weeks, followed by a 'maintenance phase' of 2-2.5mg once every 1-2 weeks. The idea is to elevate systemic levels to promote widespread anti-inflammatory and repair effects.

Frankly, the evidence for a loading phase is more anecdotal than scientific, but it's the protocol that has emerged from years of community use. The logic holds up: front-load the dose to quickly raise systemic concentrations, then use a smaller, less frequent dose to keep them there.

Timing Is Everything (Almost)

For GH secretagogues, timing is critical. You want to inject on an empty stomach because fats and carbohydrates can blunt the GH release. Insulin, in particular, is the enemy of GH secretion. This is why pre-bed (long after your last meal) and first thing in the morning are popular times.

A pre-bed dose of Mod GRF/Ipamorelin is my personal favorite protocol. It piggybacks on the body's largest natural GH pulse that occurs during the first few hours of deep sleep. You're amplifying what your body already wants to do.

For healing peptides like BPC-157, timing is less about meals and more about consistency. Dosing at the same time every day (or twice a day) ensures a stable concentration in the bloodstream and at the injury site. It's less of a spike and more of a slow, steady pressure.

Putting It All Together

Let's cut through the noise. There are three core principles for dosing peptides intelligently:

1. Respect the Saturation Dose: For GH secretagogues, stick to 100mcg per shot. Anything more is a waste. If you want a bigger effect, add another shot during the day; don't just double the dose of one shot.
2. Know Your Half-Life: A short half-life (Mod GRF 1-29) means frequent dosing for pulsatile release. A long half-life (CJC-1295 w/ DAC) means infrequent dosing for a stable, elevated baseline. Choose the tool that matches your goal.
3. Local vs. Systemic: For healing peptides like BPC-157, localized administration near the injury is the standard protocol for a reason. For systemic peptides like TB-500, the goal is to raise levels body-wide over weeks.

Start with the lowest effective dose and standard protocols. Track your recovery, your sleep, and how you feel. The goal isn't to use the most stuff; it's to get the best result with the least intervention. That's not just smart, it's efficient.