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$480.00

Batch COA on requestPage checked Oct 2026
ZionovaSarmsIn stock
MK-2866 Zionova
Ostarine (MK-2866) · 50 tablets
Buy MK-2866 Zionova (Ostarine) online in Canada. Premium performance compound for lean muscle building, injury recovery, and joint health with minimal side effects. Order from SteroidsCanada.is with lab-verified purity and fast, discreet shipping across Canada.
🚚Free shipping on orders over $300 CAD. Add $168 more with this item to qualify.
🛡 Delivery guaranteed: lost or seized, we reship your order free. Delivery policy
Complete your cycle
What most customers add with this:
It 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
- Ostarine (MK-2866)
- Strength
- 10 mg per tablet
- Pack
- 50 tablets
- Total per order
- 500 mg
- Form
- Oral tablet
- Half-life
- About 24 hours
- Value
- $0.26 per mg
01The basics
What Zionova MK-2866 is
MK-2866 is ostarine, also called enobosarm, the most studied SARM. Each Zionova tablet contains 10 mg, with 50 tablets per bottle. Ostarine reached phase 3 trials for muscle wasting in people with cancer, and it’s the SARM with the most human data.
Those trials used doses far lower than what’s commonly sold. Ostarine is also the SARM most often behind failed drug tests, sometimes through contaminated supplements. Here’s what the research shows.
02Molecule
The molecule
What is actually in the vial or tablet, from the public chemistry databases of the U.S. National Library of Medicine.

03How it works
How it works
- Selective androgen receptor activation in muscle and bone, with less effect on the prostate than testosterone in early studies.
- No conversion to estrogen or DHT.
- Half-life about 24 hours, so it’s taken once a day.
In a phase 2 trial, older adults taking 3 mg a day gained about 1.3 kg of lean mass over 3 months. Phase 3 trials in cancer patients didn’t meet their main goals.
04Half-life
Half-life, in plain numbers
A half-life of about 24 hours means half of what is in the body is gone after that time, then half of the rest, and so on. For a tablet this is mostly about how fast the liver clears it; food and the person change it a little.
- One half-life
- 24 h
- About 97% gone
- 5 days
- Levels level out with regular use after
- 4 days–5 days
A textbook model built from the half-life alone. Real numbers vary from person to person.
05Clinical reference
Dosing information
Clinical reference. Ostarine isn’t approved. Clinical trials used 1–3 mg a day, for up to about 5 months.
One Zionova tablet is 10 mg, more than three times the highest trial dose. Every risk on this page rises with dose. Talk to a doctor before use.
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
- —
- —
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.
07Risks
Side effects and risks
Trial doses were well tolerated; most problems are reported at much higher doses.
Testosterone suppression
Even trial doses lowered testosterone and SHBG somewhat; higher doses suppress more.
HDL cholesterol
Trials found HDL fell with ostarine.
Liver
Case reports describe liver injury in people using ostarine at bodybuilding doses.
Drug tests
Ostarine is one of the most common causes of positive doping tests, including through contaminated supplements.
Unknown long-term effects
Trials lasted months, not years.
Don’t use it if you
Are under 18, pregnant or breastfeeding, have liver disease or high cholesterol, or compete in tested sport.
08Interactions
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
SARMs were never approved, so they were never tested against other medicines.
- CautionOral steroids, alcohol and acetaminophen
Liver injury has been reported with SARMs; anything else that loads the liver adds to it.
- CautionAnything that lowers HDL
SARMs reduce HDL cholesterol; oral steroids lower it further.
09Bloodwork
Bloodwork checklist
Test before you start, at 4–6 weeks, and 4 weeks after you finish.
- Liver panel
- Lipid panel
- Testosterone, SHBG, LH, FSH
10After a course
Post-cycle therapy and support
At higher doses ostarine suppresses testosterone. If bloodwork afterwards shows low levels, a SERM such as tamoxifen (Nolvadex) or clomiphene (Clomid) is commonly used. See Pairs well with below.
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
Is ostarine the mildest SARM?
It’s generally considered one of the milder ones and has the most human research, but it still suppresses testosterone and lowers HDL, especially above trial doses.
Do I need PCT after ostarine?
Not always. Bloodwork after the course tells you whether your testosterone has recovered on its own.
Is ostarine approved anywhere?
No. Despite reaching phase 3 trials, it hasn’t been approved as a medicine.
How fast is shipping in Canada?
Orders ship by Canada Post Xpresspost, with tracking within 72 hours of payment, with tracking.
Is ostarine legal in Canada?
Ostarine isn’t approved by Health Canada, and Health Canada has warned about unauthorized SARM products. It’s 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.
- 1Effects of enobosarm on muscle wasting and physical function in patients with cancer: a double-blind, randomised controlled phase 2 trial
Lancet Oncol2013Dobs AS et al.PMID 23499390
- 2The selective androgen receptor modulator GTx-024 (enobosarm) improves lean body mass and physical function in healthy elderly men and postmenopausal women: results of a double-blind, placebo-controlled phase II trial
J Cachexia Sarcopenia Muscle2011Dalton JT et al.PMID 22031847
- 3Selective androgen receptor modulator use and related adverse events including drug-induced liver injury: Analysis of suspected cases
Eur J Clin Pharmacol2024Leciejewska N et al.PMID 38059982
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.






