$145.00
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Batch COA on requestPage checked Oct 2026
PeptidesIn stock
follistatin 1mg
Follistatin (FST-344) · 1 vial
Buy Follistatin 1mg (FST-344 Glycoprotein) online in Canada. High-purity research peptide for enhanced muscle growth potential beyond natural genetic limits. Order from SteroidsCanada.is – 98%+ HPLC-tested purity, discreet packaging, and fast Canadian delivery.
🚚Free shipping on orders over $300 CAD. Add $150 more with this item to qualify.
Needed with this: Bacteriostatic waterPowder vials are mixed with bacteriostatic water before use. $60Add🛡 Delivery guaranteed: lost or seized, we reship your order free. Delivery policy
You will need
EasyTouch Insulin Syringes 30G U-100 (bag of 10)$15 · 1 ml U-100 barrels for under-the-skin dosesAddIt ships by Canada Post Xpresspost with tracking.
- Ships from inside Canada
- Plain, unbranded box
- Pay by Interac e-Transfer
- Lost or seized: reshipped free
- Compound
- Follistatin (FST-344)
- Strength
- 1 mg per vial
- Pack
- 1 vial
- Total per order
- 1 mg
- Form
- Lyophilized powder (vial)
- Value
- $150.00 per mg
01The basics
What Follistatin 1mg is
This vial contains 1 mg of follistatin (the FST-344 form), a natural protein that binds and blocks myostatin, the body’s main brake on muscle growth. It’s freeze-dried for mixing with bacteriostatic water.
Animals bred without myostatin, such as “double-muscled” cattle, are dramatically more muscular, which makes follistatin a fascinating research target. But in people it’s been studied mainly as a gene therapy for muscle-wasting diseases, not as an injected peptide. Here’s what that means for you.
02Molecule
The molecule
What is actually in the vial or tablet, from the public chemistry databases of the U.S. National Library of Medicine and UniProt.
Follistatin sequence315 residues · tap to show
water-repelling polar positive charge negative charge modified
03How it works
How it works
- Binds myostatin and activin, members of the TGF-beta family that limit muscle growth.
- Also lowers FSH: follistatin was named for its ability to suppress follicle-stimulating hormone, which matters for fertility.
- A large, delicate protein: how much injected follistatin stays active and reaches muscle in people isn’t known.
04Clinical reference
Dosing information
Clinical reference. There’s no approved or trial-established human dose for injected follistatin.
Talk to a doctor before use.
Mixing math. Adding 1 ml of bacteriostatic water to the 1 mg vial gives 1,000 mcg per ml. On a U-100 insulin syringe:
- 50 mcg = 0.05 ml = 5 units
- 100 mcg = 0.1 ml = 10 units
05Mixing
Mixing and storage
- Bacteriostatic water and syringes are sold separately; see Pairs well with below.
- Let the water run slowly down the vial wall; swirl very gently and never shake.
- Keep it refrigerated (2–8 °C) and use it promptly after mixing.
06Measure it
Measure it
Type in the amount your prescriber gave you, or the one you are working from, and this turns it into what to draw up or count out from this exact product. It only does the arithmetic; it never suggests an amount.
Result
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Enter your amount
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Arithmetic from the strength printed on this product. Always check your own vial or bottle, follow your prescriber, and ask a pharmacist to show you how to measure if you are unsure.
07Injection sites
Where it is injected
follistatin 1mg arrives as a freeze-dried powder. After it is mixed with bacteriostatic water it is normally injected under the skin, into the fat layer, with a short insulin needle.
1Belly (abdomen)Fat under the skin of the bellySubQ
- Pick a spot at least 5 cm (two finger-widths) from the belly button.
- Avoid scars, stretch marks, bruises and the waistband.
- Pinch up a fold of skin and inject into the fold.
Why it is used. The most fat to work with, easy to see, and the steadiest absorption. Weekly pen medicines list it first.
Careful. Move each injection at least 2–3 cm from the last to avoid firm fatty lumps (lipohypertrophy).
Belly injections: distance from the navelMassachusetts General Hospital, Patient educationSection 0:00–0:44 of their video · YouTube
2Front of thighFat under the skin of the thighSubQ
- Sit and look down at the front of your thigh.
- Use the middle band: a hand-width below the hip crease and a hand-width above the knee.
- Pinch the skin and inject into the fold.
Why it is used. Easy to reach while seated, and a handy second area to rotate with the belly.
Careful. It can absorb a little more slowly than the belly; hard leg training straight afterwards can speed it up.
Thigh injections: where the safe band isMassachusetts General Hospital, Patient educationSection 0:43–1:06 of their video · YouTube
3Back of upper armFat over the tricepsSubQ
- Find the soft, fleshy area at the back of the upper arm.
- Stay halfway between the shoulder and the elbow.
- Pinch the skin and inject into the fold.
Why it is used. A third area to rotate through, so every spot gets a longer rest.
Careful. Hard to pinch and reach with one hand; most people need a helper.
Back of the arm and moving between spotsMassachusetts General Hospital, Patient educationSection 1:05–1:46 of their video · YouTube
Route for follistatin 1mgUnder the skin (subQ)
- Start with the bellyIt has the most fat and the steadiest absorption, and you can see what you are doing. The thigh and arm are there to rotate into.
- Short needle, small volumeAround 1 ml or less per spot. A 4–13 mm insulin needle reaches the fat without touching muscle; pinch up the skin if you are lean.
- New spot every timeShift 2–3 cm from the last injection. Reusing one spot causes firm lumps that absorb unevenly.
- Wash your hands
- Alcohol on the stopper and skin, let it dry
- New sterile needle and syringe every time
- Never share any of it
- Sharps into a puncture-proof container
General reference from standard nursing injection guidance, not medical advice. Spreading redness, heat, swelling, pus, fever, numbness or pain that keeps getting worse needs a doctor. A pharmacist or nurse can show you the technique in person.
08Risks
Side effects and risks
Injected follistatin has essentially no human safety data.
Fertility
By suppressing FSH, follistatin could affect sperm production or menstrual cycles.
Unknown effects
Activin and myostatin act in many tissues, including heart, bone and the reproductive system. Blocking them broadly may have effects no one has measured.
Fragility
Proteins break down easily with heat, shaking or time. A degraded product may do nothing.
Injection site
Redness or irritation; use sterile technique.
Immune reactions
Injected proteins can trigger immune or allergic responses.
Don’t use it if you
Are trying to conceive, are pregnant or breastfeeding, have cancer or a history of it, are under 18, or compete in tested sport.
09Interactions
Interactions
Medicines and substances that change how this product behaves, or that it changes. Show this list to your pharmacist along with everything else you take.
- Good to knowNo interaction studies
This peptide has not been through the drug-interaction testing that approved medicines go through, so nothing is known for certain.
10Safety
Before you use it
- Weigh the evidence: injected follistatin hasn’t been shown to build muscle in people.
- Consider fertility if you plan to have children.
- Handle it gently: keep it cold, never shake it.
11Pairs well with
Pairs well with
12Delivery
Delivery across Canada
Everything ships from inside Canada, so there is no border, no customs and no currency conversion.
- DispatchOrders ship by Canada Post Xpresspost, with tracking within 72 hours of payment. Customers commonly report 2 to 4 days to arrive, depending on the province and postal code.
- PackagingA plain outer box with no product names or branding.
- Delivery guaranteeIf a parcel is lost or seized in transit, we reship it free. Delivery policy
- ReturnsBecause of what these products are, opened or delivered orders can’t be returned. A wrong item is replaced free.
- PaymentInterac e-Transfer, priced in Canadian dollars.
13Questions
Common questions
Does follistatin build muscle in people?
It hasn’t been shown to as an injected peptide. Muscle gains in research come from animals and from gene therapy studies in people with muscle diseases.
What does FST-344 mean?
It’s the 344-amino-acid form of follistatin, which is processed in the body into shorter, active forms.
Why does follistatin affect fertility?
It blocks activin, which normally boosts FSH, a hormone needed for sperm production and ovulation.
How fast is shipping in Canada?
Orders ship by Canada Post Xpresspost, with tracking within 72 hours of payment, with tracking.
Is follistatin legal in Canada?
It isn’t approved by Health Canada and isn’t a controlled substance. Myostatin inhibitors are banned in tested sport.
How is my order packaged?
In a plain, unbranded box with no product names on the outside.
14Research
Research behind this page
The studies and guidelines the clinical and safety information above leans on. Every link opens the record on PubMed.
- 1Follistatin
Int J Biochem Cell Biol1998Patel KPMID 9785474
- 2Regulation of myostatin activity and muscle growth
Proc Natl Acad Sci U S A2001Lee SJ, McPherron ACPMID 11459935
15Reviews
What customers say
No reviews for this product yet. After an order is delivered we email the customer a link to review it.
Educational information only, not medical advice. Talk to a doctor or pharmacist before using any anabolic steroid, hormone, peptide or prescription drug. Adults 18+ only. Sold and shipped from Canada by SteroidsCanada.is.





