PE-22-28 (Injectable) in Illinois
Doctor-prescribed PE-22-28 (Injectable) for Illinois residents. Reviewed by licensed Illinois physicians, compounded at FDA-registered pharmacies, and shipped to your door.

— All-in monthly price
No membership fee · this is the full price · free shipping · avg 4-week supply
— Add in-depth bloodwork
Optional — add a physician-reviewed at-home blood panel to your plan.
Your sex-hormone baseline plus the safety markers that matter on therapy — blood counts, liver and kidney function — from one painless upper-arm device. Matched to your sex (PSA for men; progesterone & FSH for women). No needle, no clinic, physician-reviewed.
This treatment requires licensed provider review and approval. Treatment is not guaranteed. If prescribed, medication is fulfilled by a licensed U.S. pharmacy where permitted by law. Compounded medications are not FDA-approved or FDA-cleared.
Reviewed
Reviewed by Dr. Gene Lee, MD · Board-certified Family Medicine
Every Pepti prescription is reviewed by a licensed U.S. physician before it's dispensed — and only provided if clinically appropriate.
— The process
How it works in Illinois
- 1Complete a free online intake (~5 minutes).
- 2A licensed Illinois physician reviews your case within 24 hours.
- 3Your prescription ships from our FDA-registered compounding pharmacy.
- 4Free shipping arrives 2–4 business days later. Refills ship automatically when your supply runs out — cancel anytime.
— The treatment
What PE-22-28 (Injectable) does
A peptide fragment studied as a TREK-1 potassium channel activator, explored for mood support and neuroprotection. Compounded; not FDA-approved.
— Formulation
— Quality
Every batch independently tested
Every medication batch dispensed through Pepti is independently tested by a qualified third-party laboratory for applicable quality and safety standards before the pharmacy releases it. Batches are tested to the same standard used by 503B outsourcing facilities.
Sterility
USP <71>Confirms the finished preparation is free of viable microorganisms.
Bacterial endotoxins
USP <85>Screens for endotoxins that can cause fever or inflammatory reactions.
Potency
AssayVerifies the labeled concentration of the active peptide is what is in the vial.
Purity
HPLCChecks the active peptide against impurities and degradation products.
Identity
Mass spectrometryConfirms the peptide in the vial is the correct molecule.
pH
USP <791>Confirms the solution sits within the range specified for injection.
Particulate matter
USP <788>Checks the finished vial for visible and sub-visible particles.
Container closure integrity
USP <1207>Confirms the vial seal holds so sterility is maintained through the beyond-use date.
Telemedicine in Illinois
Illinois permits telehealth prescribing under the Illinois Telehealth Act (225 ILCS 150). An Illinois-licensed physician can establish the patient relationship through online intake review — no in-person visit is required for peptide or GLP-1 prescribing. Pepti is available in all 50 states and Washington, D.C.
The Chicago metro is one of the largest telehealth markets in the Midwest, with strong GLP-1 and peptide-therapy demand.
Illinois cities Pepti serves
+ 76 more cities
, Schaumburg, Evanston, Arlington Heights, Bolingbrook, Decatur, Skokie, Palatine, Des Plaines, Orland Park, Oak Lawn, Berwyn, Mount Prospect, Tinley Park, Wheaton, Normal, Oak Park, Hoffman Estates, Downers Grove, Plainfield, Glenview, Elmhurst, Lombard, Buffalo Grove, Moline, Romeoville, Crystal Lake, Belleville, DeKalb, Bartlett, Carol Stream, Quincy, Urbana, Park Ridge, Streamwood, Wheeling, Carpentersville, Oswego, Hanover Park, Rock Island, Addison, Calumet City, Northbrook, Woodridge, St. Charles, Glendale Heights, O'Fallon, Mundelein, Elk Grove Village, Pekin, North Chicago, Highland Park, Gurnee, Algonquin, Niles, Galesburg, Lake in the Hills, Glen Ellyn, Huntley, McHenry, Danville, Burbank, New Lenox, Lansing, Wilmette, Granite City, Round Lake Beach, Edwardsville, Vernon Hills, Lockport, Batavia, Oak Forest, Chicago Heights, Woodstock, Belvidere, West Chicago, Alton— Your protocol
How PE-22-28 is prescribed in Illinois.
— Who it's for
- Adults with a low, flat mood their physician has evaluated
- People under chronic stress who want support without a conventional antidepressant
- Patients who understand the evidence is from animal studies
- Anyone pairing it with Selank or Semax for mood and focus
Your physician decides whether PE-22-28 is appropriate for you after reviewing your intake and labs.
— Directions & duration
Inject 0.25 mL (25 units) subcutaneously once daily Monday through Friday.
— What's included
- Licensed physician review of your intake, history, and labs
- Medication compounded to your prescription by a PCAB-accredited, FDA-registered pharmacy
- Every batch independently tested before release
- Sterile syringes and alcohol prep pads for injectables
- Tracked delivery to your door, refills on schedule
- Message your physician anytime; dose changes without an appointment
— Storage & handling
- Store refrigerated (36–46°F / 2–8°C) at all times, including before first use.
- One vial is your monthly supply. A fresh vial ships to your Illinois address every 28 days on your refill schedule, so you're always well inside the beyond-use date on your label.
- Protect from light. Wipe the stopper with an alcohol pad before every draw.
- Dispose of syringes in the sharps container per the included instructions.
— What to expect
A typical course of PE-22-28 in Illinois.
— The science
How PE-22-28 works, and what the research shows.
— How it works
PE-22-28 is a small piece of a natural brain protein that blocks a channel in nerve cells tied to mood.
Blocking it is studied for a fast lift in mood and for helping the brain grow new cells.
— Clinical evidence
Rodent studies reported antidepressant-like effects within days and new brain-cell growth.
Djillani and colleagues, 2017There are no published controlled human trials.
References
- Djillani A, Pietri M, Moreno S et al.. Shortened Spadin Analogs Display Better TREK-1 Inhibition, In Vivo Stability and Antidepressant Activity · Front Pharmacol (2017) · PMID 28955242
- Mazella J, Pétrault O, Lucas G et al.. Spadin, a sortilin-derived peptide, targeting rodent TREK-1 channels: a new concept in the antidepressant drug design · PLoS Biol (2010) · PMID 20405001
Citations are provided for educational purposes. They do not constitute medical advice. Always discuss any peptide protocol with your prescribing physician.

— Pharmacy network accreditation
PCAB-accredited pharmacies on every order.
Every fulfillment runs through a PCAB-accredited pharmacy.
— Common questions
Frequently asked
about PE-22-28 (Injectable) in Illinois.
Yes. PE-22-28 (Injectable) is legal when prescribed by a physician licensed in Illinois and dispensed by an FDA-registered compounding pharmacy. Illinois permits telehealth prescribing under the Illinois Telehealth Act (225 ILCS 150). An Illinois-licensed physician can establish the patient relationship through online intake review — no in-person visit is required for peptide or GLP-1 prescribing.
Most orders ship from our FDA-registered compounding pharmacy within 1–3 business days after physician approval. Delivery within Illinois typically arrives 1-3 business days after shipment. Pepti serves patients across Illinois including Chicago, Aurora, Naperville, and Joliet.
No. Pepti operates as a fully telehealth platform in Illinois. Illinois permits telehealth prescribing under the Illinois Telehealth Act (225 ILCS 150). An Illinois-licensed physician can establish the patient relationship through online intake review — no in-person visit is required for peptide or GLP-1 prescribing.
PE-22-28 (Injectable) starts at $219 at Pepti. Pepti is subscription-based — your refill ships when your supply runs out, and you can cancel anytime. Pricing is the same nationwide — no Illinois-specific markup. Shipping is free.
Yes — Pepti is available in all 50 states and Washington, D.C. Wherever you are in the country, a physician licensed in your state reviews your intake and your medication ships from an FDA-registered compounding pharmacy.
You don't need an in-person peptide clinic — Pepti provides doctor-prescribed PE-22-28 (Injectable) entirely online anywhere in Illinois. A physician licensed in Illinois reviews your intake, and your medication ships from an FDA-registered compounding pharmacy to your door. Unlike "research use only" peptide sites, every Pepti order requires a valid patient-specific prescription and a licensed dispensing pharmacy.
No. "Research use only" PE-22-28 (Injectable) is sold with no prescription, no physician, and no dispensing pharmacy, and is not legally sold for human use — independent testing of research-grade peptides has repeatedly found underdosing, mislabeling, and contamination. Prescription PE-22-28 (Injectable) is compounded for you at an FDA-registered US pharmacy after a licensed physician's review. When comparing PE-22-28 (Injectable) options in Illinois, only consider providers that can name their prescribing physicians and their dispensing pharmacy.
— More questions33 more questions about Pepti, answered.
Pepti serves all of Illinois. A physician licensed in Illinois reviews every order within 24 hours, the prescription is compounded by a state-licensed, FDA-registered pharmacy, and it ships free and tracked to any Illinois street address. The price is the same as every other state.
Yes. The whole process is online in Illinois: a free assessment, physician review, messaging, dose changes, and refills through your Pepti account or the Hello Pepti app. No clinic visit is required.
Pepti ships PE-22-28 to Illinois directly from the pharmacy: free, tracked, unbranded, in insulated packaging with ice packs for refrigerated medication. The pharmacy compounds in 1-3 business days and delivery takes 1-3 business days after shipment. PO Boxes are not accepted.
Every treatment on Pepti's catalog ships to Illinois. Eligibility is confirmed during the assessment from your Illinois shipping address, and if anything ever cannot ship to your address it is refunded.
The same as everywhere Pepti serves: one all-in monthly price per treatment that includes the medication, the physician, and shipping, with no Illinois-specific markup and no membership or consult fee. Every price is on the product page.
Yes. Pepti's physicians hold licenses in Illinois, and only a physician licensed where you live reviews and prescribes your order. Their names and credentials are on the providers page.
Yes. Pepti's partner pharmacies are state-licensed, FDA-registered 503A compounding pharmacies licensed to dispense into Illinois, and every batch is independently tested before it ships.
A peptide fragment studied as a TREK-1 potassium channel activator, explored for mood support and neuroprotection. Compounded; not FDA-approved. PE-22-28 is prescription-only at Pepti: a licensed physician reviews your assessment and, if appropriate, prescribes it to be compounded by a state-licensed, FDA-registered pharmacy.
PE-22-28 is commonly prescribed for: Adults with a low, flat mood their physician has evaluated; People under chronic stress who want support without a conventional antidepressant; Patients who understand the evidence is from animal studies; Anyone pairing it with Selank or Semax for mood and focus. Whether it is appropriate for you is decided by the reviewing physician from your history, medications, and labs where required.
Yes. PE-22-28 is prescription-only. The free online assessment takes about five minutes, a physician licensed in Illinois reviews it within 24 hours, and if approved the prescription goes to the pharmacy. If not approved, the medication charge is refunded.
No. PE-22-28 can be prescribed from the assessment alone. Bloodwork is required only for the GLP-1s and growth-hormone secretagogues, and the intake tells you if a medication on your order needs it.
PE-22-28 is a subcutaneous injection into the abdomen or thigh with a small insulin syringe. Your kit ships with sterile syringes and alcohol prep pads, and the exact dose and schedule are printed on the pharmacy label. Dosing videos are in your account.
One vial is your monthly supply at the dose your physician prescribes. A fresh vial ships about every 28 days, and the date moves if your physician changes your dose. Store it as the pharmacy label directs, refrigerated.
Once per fill, $219 each time, when the next vial ships. It renews until you cancel, which you can do anytime from your account with no cancellation fee.
The compounded PE-22-28 with sterile syringes and alcohol prep pads, free tracked shipping in an unbranded box with insulated packaging, the physician review, ongoing physician care and dose adjustments, and unlimited messaging.
Reported side effects of PE-22-28 are usually mild: mild redness or swelling at injection site; temporary fatigue or headache; mild nausea (uncommon). The physician screens your history, medications, and allergies before prescribing, the medication-specific consent lists the known risks, and you can message your physician about anything you notice. Seek emergency care for severe symptoms.
Response varies by person, goal, and dose, and PE-22-28 is prescribed for ongoing use rather than a short trial. Your physician sets expectations at approval, tracks how you respond through your account, and adjusts the dose without an appointment.
Any dose change is made by your physician from the chart, without an appointment. Message them through your account if you think your dose should change.
Yes. Add PE-22-28 to a plan with another treatment and both go through one assessment and one physician review, shipping together on one schedule. Each keeps its own catalog price. The physician reviews the combination and can adjust it.
No. Compounded PE-22-28 is not FDA-approved. It is prepared to your physician's prescription by a state-licensed, FDA-registered 503A pharmacy and every batch is independently tested before release.
Yes, when prescribed by a licensed physician and dispensed by a licensed pharmacy, which is how Pepti provides it in Illinois. Research-use-only PE-22-28 sold without a prescription is labeled not for human use and is a different product.
PE-22-28 is a small piece of a natural brain protein that blocks a channel in nerve cells tied to mood. At Pepti it is prescribed to support mood & stress support, neuroprotection, trek-1 channel activator, rapid-acting research peptide. Individual response varies, and your physician sets expectations at approval.
PE-22-28 is a small piece of a natural brain protein that blocks a channel in nerve cells tied to mood. Blocking it is studied for a fast lift in mood and for helping the brain grow new cells. Compounded PE-22-28 is not FDA-approved; it is prescribed off-label by a licensed physician after reviewing your assessment.
PE-22-28 is prescribed for mood & stress support, neuroprotection, trek-1 channel activator, rapid-acting research peptide. It is commonly requested by adults with a low, flat mood their physician has evaluated; people under chronic stress who want support without a conventional antidepressant; patients who understand the evidence is from animal studies; Anyone pairing it with Selank or Semax for mood and focus. Whether it is appropriate for you is the reviewing physician's decision.
PE-22-28 is studied for mood & stress support, neuroprotection, trek-1 channel activator, rapid-acting research peptide. Those are the goals it is prescribed to support at Pepti; results vary by person, dose, and consistency, and no outcome is guaranteed. Your physician tracks how you respond through your account.
Rodent studies (Djillani and colleagues, 2017) reported antidepressant-like effects within days and new brain-cell growth. There are no published controlled human trials. References are listed on this page.
PE-22-28 is generally not prescribed with: active cancer or history of cancer (unless approved by oncologist); pregnancy or breastfeeding; severe kidney or liver disease; known allergy to the peptide or excipients. The physician screens for these in your intake, and anything that rules PE-22-28 out means it is not prescribed and is refunded.
At Pepti. Complete the free assessment, a physician licensed in Illinois reviews it within 24 hours, and if appropriate PE-22-28 is compounded by a state-licensed, FDA-registered pharmacy and shipped free to your door for $219 per month, all-in. Not prescribed means refunded.
Injectable vial: 5 mL at 2 mg/mL, containing 10 mg PE-22-28. One vial is your monthly supply at the prescribed dose, and a fresh one ships about every 28 days.
Not currently. PE-22-28 ships as a multi-dose vial with sterile syringes and prep pads. The pepti Pen is available for 10 other treatments.
$219 per month covers the compounded PE-22-28, the physician review, ongoing physician care including dose adjustments and refill review, unlimited messaging, and free tracked shipping. There is no membership, consult, visit, or refill fee; the only separate charges are optional at-home lab panels and a physician-approved dose increase billed at pharmacy cost.
Yes. PE-22-28 is on Pepti's live catalog, which lists only treatments a partner pharmacy can compound and ship today. If a physician prescribes it, it ships; if it ever cannot be dispensed, the charge is refunded.
PE-22-28 ships to all 50 states and Washington, D.C, free and tracked, in insulated unbranded packaging. Eligibility is confirmed during the assessment from your shipping address.
PE-22-28 (Injectable) in every state
Pepti is available in all 50 states and Washington, D.C.
Pepti operates in Illinois through licensed physician partnerships. Compounded medications are produced at FDA-registered 503A pharmacies. Treatment decisions are made by your prescribing physician.