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Injection Guide
A clever brain-boosting peptide derived from your immune system's natural tuftsin molecule—it calms anxiety and sharpens your mind without the drowsiness or addiction risks of traditional anti-anxiety medications.
Route
Intranasal
Sites
3 recommended
Frequency
Once daily
Preparation
Bacteriostatic water (BAC water)—the preservative keeps it safe for multiple uses
Insulin syringes (29-31 gauge) if injecting
Alcohol swabs for cleaning vial tops
Nasal spray atomizer bottle (if using intranasally)
Your Selank powder vial
Pro Tip
Prepare all supplies on a clean surface before you begin. Having everything ready makes the process smoother and more sterile.
Mixing
Wash your hands thoroughly with soap and water. Gather all supplies on a clean, flat surface.
Remove the plastic cap from the peptide vial and wipe the rubber stopper with an alcohol swab. Let it air dry.
Draw the appropriate amount of bacteriostatic water into a sterile syringe.
Insert the needle into the vial at an angle, aiming at the inside wall of the vial. Slowly push the plunger to let the water trickle down the glass wall -- do NOT squirt directly onto the powder.
Once all water is added, gently swirl the vial in a slow circular motion. Never shake the vial, as this can damage the peptide bonds.
Continue swirling until the powder is completely dissolved and the solution is clear. If particles remain, let the vial sit for a few minutes and swirl again.
Label the vial with the date of reconstitution, the peptide name, and the concentration (e.g. 250mcg per 0.1mL).
Example Calculation
If you have a 5mg vial and add 2mL of BAC water, you get a concentration of 2.5mg/mL (2500mcg/mL). So every 0.1mL (10 units on an insulin syringe) equals 250mcg of Selank.
Dose Calculation
For a 250mcg dose at 2500mcg/mL concentration: draw 0.1mL (10 units on a standard insulin syringe). For 500mcg: draw 0.2mL (20 units). For nasal spray: calculate drops/sprays needed based on your atomizer delivery volume.
Pro Tip
Always add the bacteriostatic water slowly, letting it run down the side of the vial. Never shake the vial -- swirl gently to avoid damaging the peptide.
Location
Site 01
Intranasal: One spray per nostril
Follow your provider's instructions for this injection site. Rotate sites regularly to prevent tissue damage.
Site 02
Abdomen
Pinch the skin 2 inches from navel. Avoid the area directly around the belly button. Rotate between left and right sides.
Site 03
Outer Thigh
Middle third of the outer thigh. Keep at least 4 inches above the knee and below the hip. Alternate legs each injection.
Rotate between 3 sites to prevent tissue buildup and ensure consistent absorption.
Pro Tip
Rotate your injection sites with each dose to prevent lipohypertrophy (buildup of fatty tissue). Keep a simple log of where you last injected.
Step by Step
For intranasal: Tilt head slightly back, insert tip into nostril, spray while gently inhaling
For injection: Clean site with alcohol swab and let dry completely
Pinch about an inch of skin to create a fold
Insert needle at 45-90 degree angle
Push plunger slowly and steadily, wait 5 seconds before removing
Pro Tip
This peptide uses subcutaneous injection (just under the skin) or intranasal spray—nasal delivery is most popular for selank due to convenience and rapid absorption to the brain. Inject at a 45-90 degree angle into pinched skin. Aspirate before injecting to ensure you haven't hit a blood vessel.
Timing
Optimal Timing
Best time
Morning administration works well for most people since Selank enhances focus and mental clarity during the day. Some users prefer splitting doses between morning and early afternoon. Avoid late evening doses if you notice increased mental alertness.
With food?
Selank can be taken regardless of food timing. Intranasal administration bypasses the digestive system entirely. For injections, food timing doesn't significantly affect absorption.
Stacking notes
Pairs excellently with Semax for comprehensive cognitive support—they work through complementary mechanisms. If stacking, start with lower doses of each. Can be combined with nootropic supplements like Alpha-GPC. Space injections from other peptides at different sites.
Sample Daily Schedule
Morning (8:00-10:00 AM)
250-500 mcg injection
Site: Intranasal (preferred) or subcutaneous injection
Morning dosing aligns with peak cognitive demands for most people. Take consistently at the same time daily for best results. Typical cycle is 4-6 weeks, followed by 1-2 weeks off.
Early afternoon (optional split dose)
200-250 mcg injection
Site: Intranasal or subcutaneous
Some users prefer splitting their daily dose. If doing so, take the second dose before 3 PM to avoid any impact on sleep.
Dosing Tiers
Dose
250 mcg
Frequency
Once daily
Duration
1-2 weeks
Start here to assess your individual response. Most people notice subtle calming effects within the first few days. The intranasal route is most common for beginners—one spray per nostril delivers approximately 250mcg total.
Dose
300-500 mcg
Frequency
Once daily
Duration
4-6 weeks
The most commonly used protocol. Can be taken as a single dose or split into two doses (morning and afternoon). Many users find 400mcg daily provides optimal balance of anxiolytic and cognitive effects.
Dose
500-750 mcg
Frequency
Once or twice daily
Duration
4-8 weeks
Higher doses used in some research protocols. Some users split this into two daily doses. Effects don't necessarily scale linearly with dose—higher isn't always better. Monitor response carefully.
Preservation
Before Mixing
Keep your Selank powder in the refrigerator (36-46°F / 2-8°C) for short-term storage or in the freezer (-4°F / -20°C) for long-term storage. Store in the original sealed vial away from light. Properly stored powder can remain stable for 2+ years when frozen.
After Mixing
Once mixed with bacteriostatic water, refrigerate at 36-46°F (2-8°C). Never freeze the reconstituted solution—freezing destroys the peptide. Keep away from light and use within 14-21 days.
Shelf Life After Mixing
14-21 days
Signs of Degradation
Discard the vial immediately if you notice any of these:
Cloudy or hazy appearance (should be crystal clear)
Visible particles floating or settled at the bottom
Color changes—any yellowing or discoloration means discard it
Unusual smell—fresh solution should have little to no odor
Important
When to Stop
Any signs of allergic reaction—stop immediately and seek medical help
Persistent headaches that don't improve after the first week
Significant nasal problems with intranasal use that don't resolve
Worsening anxiety or mood changes (paradoxical reaction)
Any side effect that feels serious or really concerns you
Your cycle is complete and you're entering a rest period
Selank is approved in Russia but remains a research compound in most other countries. It is not FDA-approved in the United States. Never start, stop, or change your dosing without guidance from a qualified healthcare provider. This information is for educational purposes only—not medical advice.
Clean Technique Checklist
Wash hands thoroughly with soap and water before handling supplies
Swab vial tops and injection site with alcohol and let dry
Never touch the needle tip or allow it to contact non-sterile surfaces
Use a new syringe and needle for each injection
Dispose of used sharps in a proper sharps container
Store reconstituted peptides according to the storage instructions above