Sermorelin Dosage: What Actually Determines Your Protocol

The honest answer to "what's the right sermorelin dose?" is that it depends, and that is not a dodge. Sermorelin dosing is individualized, which is why a legitimate protocol starts with an evaluation rather than a fixed number. A prescriber weighs several factors together:

• Age. Growth hormone output naturally declines with age, and a prescriber accounts for that when choosing a starting point.
• Body composition and weight. Body mass and lean-mass considerations can influence where a physician begins.
• Your goals and overall health picture. What you're being treated for, and your broader health history, shape the protocol.
• How you respond. Sermorelin dosing is not "set it and forget it" — a physician starts conservatively, monitors, and adjusts based on your response and, when clinically indicated, lab markers.

Because these factors differ from person to person, the "right" dose is the one a physician arrives at for you, not a number you copy from a forum.

In clinical practice, sermorelin is commonly started in the neighborhood of 200 to 300 mcg, given by subcutaneous injection, usually before bed. That range shows up consistently because of how the medication works, not because it's a one-size-fits-all prescription.

Sermorelin is a GHRH analog — it prompts your own pituitary gland to release growth hormone through your body's natural pathway, rather than replacing growth hormone directly. A clinical review has described this as a more physiologic approach precisely because it preserves the body's own feedback regulation (Walker, 2006). Dosing before bed is meant to align with the body's largest natural growth-hormone pulse, which occurs during early sleep. Standard clinical references describe sermorelin as a subcutaneous injection and cover the general administration guidance (Mayo Clinic).

The reason it's expressed as a range rather than a single figure is the individualization above. Your prescriber may begin at the lower end and titrate, or start elsewhere based on your evaluation. Treat any specific number you read online — including this one — as general education, not a prescription for you.

A lot of dosing confusion comes from mixing up three different things, so it's worth separating them:

• Micrograms (mcg) are the amount of sermorelin — this is what a physician actually prescribes.
• Milliliters (ml) are the volume of liquid you draw up.
• "Units" on an insulin syringe are also a measure of volume, not amount.

Here's why this matters for safety: the same 200–300 mcg dose can correspond to completely different volumes and "unit" markings depending on how concentrated your specific vial is. There is no universal "X mcg equals Y units" conversion, because it changes with the compounded concentration your pharmacy prepares. That's exactly why your prescriber and your pharmacy label tell you the specific volume to draw for your vial — and why copying a "units" number from an online chart can be dangerously wrong for your particular prescription. If you're ever unsure how your prescribed mcg dose translates to the syringe, the answer is to ask your provider or pharmacist, not the internet.

Sermorelin is delivered in a few different forms, and the route affects both absorption and how it's dosed:

• Subcutaneous injection is the most established and reliably absorbed route, which is why it's the standard for physician-prescribed sermorelin and the form most dosing guidance refers to.
• Oral, sublingual (troche), and nasal forms exist as well. Because these routes are absorbed differently than an injection, the dosing is not interchangeable — a dose that makes sense one way does not simply carry over to another.

The practical point is that the route is part of the prescription, not an afterthought you swap on your own. A prescriber selects the form and the corresponding dose together.

The core dosing logic is the same for men and women, because sermorelin acts on the growth-hormone axis, which isn't sex-specific. Men and women are evaluated on the same factors — age, body composition, goals, and response — and a physician individualizes from there.

The key difference is contraindications rather than the dosing math itself: sermorelin is not used during pregnancy or breastfeeding, and a prescriber screens for that and for other conditions before starting anyone, regardless of sex. Beyond that, "the dose for women" and "the dose for men" both come down to the same thing — a physician-set, individualized protocol.

A responsible sermorelin protocol is a process, not a fixed prescription handed over on day one:

• Evaluation first. A licensed physician reviews your intake, screens for contraindications, and confirms you're an appropriate candidate.
• Conservative start. Dosing typically begins within a standard range rather than aggressively.
• Monitoring. Your prescriber follows your response and, when clinically indicated, may order labs such as IGF-1 to help guide the protocol.
• Adjustment. The dose or schedule can be modified over time based on how you respond and tolerate it.

Sermorelin is also generally used in defined courses rather than indefinitely, with the specifics — including any breaks — determined by your prescriber. The throughline is oversight: the dose isn't a static number, it's something a physician manages.

Beyond the amount, two scheduling details come up repeatedly:

• Timing: before bed, to align with the body's natural overnight growth-hormone release.
• Frequency: many protocols are structured with dosing on most nights of the week rather than every single night, a pattern a prescriber sets and can adjust.

As with the dose itself, the exact schedule is individualized and set by your physician — the general shape (evening, most nights, in defined courses) is common, but the specifics are yours.

If you take one thing from this article, make it this: the biggest variable in sermorelin dosing is not the number — it's whether a physician set it and is monitoring it.

A precise, well-chosen dose from an unregulated "research-only" vial you sourced yourself is still risky, because you have no verified concentration, no screening for whether sermorelin is even appropriate for you, and no monitoring if something is off. A physician-prescribed, pharmaceutical-grade, 503A-compounded protocol addresses all three at once. Same molecule on the label; completely different safety picture in the syringe. Chasing a bigger dose for a bigger effect — the mindset behind a lot of online dosing charts — is exactly how people move themselves from the safe end of the range to the risky end.

Protocol MD's sermorelin is physician-prescribed and 503A-pharmacy compounded, which is the entire point of dosing done right: a licensed physician evaluates you, screens for contraindications, sets an appropriate starting protocol, and monitors your response over time rather than leaving you to guess from a chart. If you're considering sermorelin, the first step isn't picking a number — it's an evaluation. See how Protocol MD's physician-prescribed sermorelin works, or read our sermorelin guide and our honest take on whether sermorelin is safe for the fuller picture.

So what's the right sermorelin dosage? For most people it starts somewhere around 200–300 mcg by subcutaneous injection before bed, but that's a starting range, not an answer — the real answer is that a physician sets your dose based on your age, body composition, goals, and response, and adjusts it with monitoring over time. The number matters less than who chose it and who's watching it, which is exactly why sermorelin is safest inside a legitimate, physician-supervised protocol rather than a dose you copy and self-administer.