By now, you’ve got storage and reconstitution sorted. Next up? Getting comfortable with your injections. It can feel like a big deal at first, but trust us - with a little routine, it quickly becomes second nature.
By now, you’ve got storage and reconstitution sorted. Next up? Getting comfortable with your injections. It can feel like a big deal at first, but trust us - with a little routine, it quickly becomes second nature.
✨ Where to Inject
All peptides we supply are injected subcutaneously (just under the skin, not into muscle). The best sites are:
Abdomen - at least 5cm away from your belly button.
Thighs - front or outer area, avoiding veins.
Upper arm - back of the arm, if someone else is helping.
👉 Rotate sites each week. Sticking to the same spot can cause irritation or lumps.
✨ How to Inject
Reconstitute your vial of medication. Let it sit on the bench for 5 minutes before use to ensure air bubbles subside.
Wash and sanitise your hands. Some people choose to wear gloves.
Clean the injection site with an alcohol wipe. Wait at least 1 minute for the alcohol to air dry on the skin (otherwise it can sting!)
Wipe the top of the medication vial with an alcohol wipe.
Use a syringe to draw up the correct dose.
Draw air into the syringe first, and inject this air into the medication vial (helps with the pressure)
Pinch up a fold of skin gently between your thumb and fingers.
Insert the needle at a 90° angle (or 45° if you’re very lean).
Inject slowly and steadily - no need to rush.
Remove the needle, release the skin fold, and dispose of the syringe safely.
✨ What Not to Do
Don’t inject into muscle (ouch, and not effective).
Don’t inject into scars, stretch marks, bruises, or areas that feel hard.
Don’t re-use syringes - single use only, always.
Don’t skip the alcohol wipe - it’s there for a reason. If you skip swabbing the top of the vial, this increases the chance of bacteria getting in.
✨ Routine Builder Tips
Pair your jab with a weekly ritual (like Sunday night self-care or your favourite Netflix show).
Keep supplies together in a clean container so it’s grab-and-go.
Set a reminder in your phone or calendar so you never miss a dose.
Don't forget to also set a reminder to reorder before you'll run out.
✨ Injection Site Reactions
Injection site reactions can sometimes occur with GLP-1 medications and other peptides. These reactions are usually mild and temporary, and often become less noticeable as your body gets used to the medication over the first few weeks.
Common reactions may include:
Mild redness at the injection site
Slight swelling or a small bump under the skin
Itching or mild tenderness
Warmth around the injection area
For GHK-Cu - a red mark that lasts a couple of days, and a stinging sensation
Tips to help reduce irritation:
Rotate injection sites (stomach, thigh, or upper arm), and from left to right each week
Inject into clean, dry skin and ensure you've used an alcohol wipe
Allow refrigerated medication to reach room temperature before injecting
Avoid injecting into the exact same spot each time
For GHK-Cu - add more bac water to your syringe after you draw up the dose to further dilute the peptide and reduce the stinging sensation
Most injection site reactions settle on their own within a few hours to a day and are generally harmless. If irritation persists or worsens, it’s best to pause use and seek medical advice.
✨ Bonus Video: Getting the last dose out of a vial
It's important to measure each dose for injection very carefully, and not take too much. Even just 2 units extra can add up over a few doses.
If you get to the last dose in your vial, and it seems like it's not quite a full dose left, this could have happened for a few possible reasons:
You accidentally put in slightly less than the required units at the start. Eg. only 98 units (instead of 100) would mean you're already a little short.
You accidentally took a couple more units each dose - even 2 units extra (1 additional line on syringe) will mean you've lost 6 units over 3 doses
The last few units can pool around the grey rubber vial stopper. Then, if you stick the syringe in quite far, you could then be above the point where the liquid is pooling.
(Very rare) if the vial was stored on it's side some liquid can leak, but its very rare because you've got the grey rubber stopper on the top of the vial to prevent that happening.
In actuality, it's usually a combination of 1, 2 & 3. The same number of units you put into the vial should be there to draw back out again (it can't just disappear). I would suggest that you follow some of these tips in these couple of videos which show how to get the last remaining bits out of a vial, as this should help you.
✨ Injection FAQs
These are subcutaneous injections (just under the skin, not into muscle). You're aiming for the fatty tissue, and that's why a 6mm or 8mm long needle is ideal.
Best areas:
Stomach (abdomen) - at least 5cm away from your belly button (this is the easiest, and most commonly used)
Thighs - front or outer area
Upper arm - if someone else is helping
👉 Rotate sites each time to avoid irritation or lumps. Left one week, right the next week.
Not really - all recommended injection sites work well when used correctly.
The main options (stomach, thighs, upper arm) all deliver the medication effectively, so it mostly comes down to comfort and preference.
👉 That said, most people prefer the abdomen (stomach area) because:
It’s easy to access
There’s usually enough fatty tissue
Absorption tends to be consistent
Rotating your injection spots each time
Using proper technique
Injecting into fatty tissue (not muscle)
👉 Using the same exact spot repeatedly is more likely to cause issues than the choice of area itself.
This is a once a week injection, so pick a day and time that you will stick to. Set an alarm or calendar reminder if you have to.
We recommend injecting at night, after spending the day hydrating. This way you might also sleep through any side effects overnight.
For the first time, you might want to go with Friday night, that way you can rest over the weekend if you do experience side effects (assume you don't work weekends, adjust as necessary). Some people are fine, some people get really tired in the 48 hours after. Everyone is different but you might appreciate the downtime to recover if needed.
Yes, but for most people - barely. And it should be over quickly.
You might feel:
A small pinch
Or nothing at all
👉 Using a fine needle (29–31 gauge) and injecting slowly makes a big difference.
👉 Letting alcohol from your swab dry before injecting also helps reduce stinging.
Pinch the skin so you've got enough fatty tissue to inject in and go with:
Most people: 90° angle (straight in)
If very lean: 45° angle
👉 The goal is to get just under the skin - not into muscle.
We recommend 1mL (U-100) insulin syringes - these are what we supply.
If sourcing your own, look for:
U-100 insulin syringes
Fine needle: 29–31 gauge (G)
Short length of 6mm or 8mm (for subcutaneous use)
👉 These are designed for accurate dosing and comfort. Here are some more tips on syringes and where to buy.
The first time is always the hardest, promise. It will get easier with more practice. For now, keep it simple:
Clean the area with an alcohol wipe
Pinch a small fold of skin
Insert the needle at 90° (or 45° if very lean)
Inject slowly and steadily
Remove and dispose safely
👉 Slow and steady = more comfortable, less irritation.
Yes, especially if you’re new.
Pinching helps ensure you’re injecting into subcutaneous fat, not muscle.
👉 Just a gentle pinch, no need to squeeze hard.
Yes, this can happen sometimes and is referred to as an injection site reaction (ISR).
Common causes:
Minor skin irritation
Injecting in the same spot too often
Injecting too quickly
injecting too shallow
👉 It usually settles within a few hours or the next day.
To reduce it:
Rotate injection sites
Inject slowly
Let alcohol dry fully before injecting
First, don’t panic. It happens sometimes, especially when you’re new and not used to correct injection technique.
If the injection goes into muscle instead of under the skin:
The medication may be absorbed a bit faster
You might feel more discomfort or soreness at the site (very likely)
Occasionally, side effects can feel a little stronger or come on quicker because it's being absorbed faster
But in most cases, it’s not dangerous and doesn’t mean anything has gone wrong.
Mild soreness = normal
Small bruise = normal
👉 If you notice anything unusual like significant pain, swelling, or ongoing discomfort, keep an eye on it and seek advice if needed.
To avoid hitting muscle:
Use a short insulin needle (6-8mm)
Pinch the skin before injecting
Inject at 90° (or 45° if you’re lean)
Stick to areas with more fatty tissue (like the stomach)
Totally normal, it just means you’ve hit a small capillary which happens from time to time.
👉 Apply light pressure with a tissue or cotton pad for a few seconds. No need to stress, it doesn’t affect your dose.
No,always use a new one.
Reusing can:
Increase risk of infection
Make injections more painful (the needle dulls with each jab)
Reduce sterility
👉 Use a fresh syringe every time, non-negotiable.
✨ Still have questions?