
$114.00
$120.00

Batch COA on requestPage checked Oct 2026
ZionovaWeight LossIn stock
Zionova Cytomel
Liothyronine (T3)
★★★★★5.02 reviewsBuy Zionova Cytomel (Liothyronine T3) online in Canada. Effective weight loss compound for thyroid hormone for accelerated metabolism, enhanced fat burning, and improved energy during cutting phases. Order from SteroidsCanada.is – lab-tested quality, discreet packaging, and fast shipping across Canada.
🚚Free shipping on orders over $300 CAD. Add $192 more with this item to qualify.
🛡 Delivery guaranteed: lost or seized, we reship your order free. Delivery policy
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
- Liothyronine (T3)
- Form
- Oral tablet
- Half-life
- About 2.5 days
01The basics
What Zionova Cytomel is
Cytomel is a brand name for liothyronine, synthetic T3, the active form of thyroid hormone; the tablet strength and count are in the specifications below. Doctors prescribe it for an underactive thyroid (hypothyroidism), sometimes alongside levothyroxine (T4).
In bodybuilding, it’s used to speed up metabolism during a cut. That’s an off-label use with a serious warning on the label itself: thyroid hormone shouldn’t be used for weight loss in people with normal thyroid function, because large doses can be dangerous. Here’s why.
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
- T3 sets your metabolic rate: it increases energy use, heart rate and the breakdown of fat, and of muscle protein.
- Shuts down your own thyroid: extra T3 tells the pituitary to cut TSH, so your thyroid makes less hormone while you take it.
- Fast-acting: it works within hours, with a half-life of about 2.5 days.
04Half-life
Half-life, in plain numbers
A half-life of about 2.5 days 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
- 2.5 days
- About 97% gone
- 12.5 days
- Levels level out with regular use after
- 10 days–12.5 days
A textbook model built from the half-life alone. Real numbers vary from person to person.
05Clinical reference
Dosing information
Clinical reference. For hypothyroidism, liothyronine is usually started at 25 mcg a day and raised by up to 25 mcg every one or two weeks; typical maintenance doses are 25–75 mcg a day. Lower starting doses are used for older adults and people with heart disease.
The label warns that thyroid hormone shouldn’t be used to treat obesity or for weight loss in people with normal thyroid function, as large doses can cause serious or life-threatening toxicity. Check the tablet strength in the specifications and 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
—
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
Too much T3 produces the symptoms of an overactive thyroid, and some of them affect the heart.
Heart rhythm
Fast heartbeat, palpitations and atrial fibrillation (an irregular rhythm that raises stroke risk). Chest pain or an irregular heartbeat needs urgent care.
Muscle loss
High T3 breaks down muscle as well as fat, which is why it’s usually paired with an anabolic.
Anxiety and insomnia
Nervousness, tremors, sweating, heat intolerance and poor sleep.
Bone
Long-term excess thyroid hormone weakens bones.
Thyroid recovery
Your own thyroid output is suppressed while you use it, and takes time to recover after stopping.
Don’t use it if you
Have heart disease or an irregular heartbeat, an overactive thyroid, untreated adrenal insufficiency, osteoporosis, are pregnant without medical care, or are under 18.
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.
- SeriousStimulants and beta-2 agonists
Clenbuterol, albuterol, yohimbine and caffeine pills add to T3’s pull on the heart; palpitations and irregular heartbeat become more likely.
- CautionWarfarin
Thyroid hormone makes warfarin stronger; INR can rise.
- CautionInsulin and diabetes medicines
More may be needed while thyroid hormone is raised.
- CautionCalcium, iron, antacids, cholestyramine
They bind thyroid hormone in the gut; keep them about 4 hours apart.
- CautionLevothyroxine or other thyroid medicine
Adding T3 to an existing prescription can tip you into an overactive state; only with the prescriber.
09Bloodwork
Bloodwork checklist
Test before you start, at 4–6 weeks, and 6 weeks after you stop.
- Thyroid: TSH, free T4, free T3
- Resting heart rate daily
- ECG if you notice palpitations
- Lipids and blood sugar
10Tips
Using it more safely
- Check your resting heart rate every morning and stop if it stays elevated.
- Keep protein high and train with weights to limit muscle loss.
- Avoid stimulants such as clenbuterol and high-dose caffeine, which add to heart strain.
- Ending gradually rather than abruptly is common practice.
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
Will Cytomel damage my thyroid?
It suppresses your thyroid’s own output while you take it. In healthy people, function usually returns within weeks of stopping; bloodwork confirms it.
Why does T3 cause muscle loss?
High thyroid hormone speeds up the breakdown of protein as well as fat.
Cytomel or clenbuterol?
They work differently. T3 raises metabolism by acting on every cell; clenbuterol is a stimulant acting on beta receptors. Combining them adds to heart strain.
How fast is shipping in Canada?
Orders ship by Canada Post Xpresspost, with tracking within 72 hours of payment, with tracking.
Is Cytomel legal in Canada?
Liothyronine is a prescription drug in Canada (on Health Canada’s Prescription Drug List). It isn’t a controlled substance.
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.
- 1Use of liothyronine (T3) in hypothyroidism: Joint British Thyroid Association/Society for endocrinology consensus statement
Clin Endocrinol (Oxf)2023Ahluwalia R et al.PMID 37272400
15Reviews
What customers say
- 5 ★2
- 4 ★0
- 3 ★0
- 2 ★0
- 1 ★0
DominicVerified order ·
★★★★★Very good product, guaranteed weight loss, fast shipping as usual.
Thanks for taking the time to review, Dominic! We're glad it got to you on time. It's great to keep serving you. We appreciate your support.
DominicVerified order ·
★★★★★Very good product!
Thank you, Dominic! Glad to hear you're happy with the Zionova Cytomel. We look forward to your next order.
After your order is delivered we email you 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.




