Until the strike is resolved, Thirdzy will be routing all Canadian orders through alternative (non-Canada Post) carriers. We’re doing everything we can to ensure smooth, on-time deliveries. But based on what we saw during the other two recent strikes, if the disruption lasts several weeks, other carriers will get busier too—potentially slowing down deliveries across the board. Your patience is appreciated :)

Unfortunately, PO Boxes can’t receive parcels during a Canada Post strike. If this affects your shipping address on your subscription, please update it in your customer portal or email zteam@thirdzy.com with the alternative delivery address.

Melatonin is a hormone found in most traditional sleep supplements that helps with sleep timing. While melatonin can assist some with falling asleep, it does not directly improve sleep quality or duration. Possible downsides include morning grogginess, unpleasant dreaming, dependency, and impacts on other hormones. Due to its limited benefits and potential downsides, we will NEVER include melatonin in our formulation. Dr. Andrew Huberman discusses this at length on his podcast, Huberman Lab, especially in the first few episodes.​

For a supplement to help with sleep, it needs to do TWO key things:

1. Help you relax and counteract overstimulation.

2. Support your brain chemistry and hormones for Deep and REM sleep.​

Thirdzy contains some of the best natural compounds to help with BOTH.

Collagen: The Relaxing Power of Glycine
Collagen is rich in glycine, an amino acid known for its calming effects on the brain. Glycine acts as an inhibitory neurotransmitter, reducing nerve activity and promoting relaxation. Studies have shown glycine can lower core body temperature, important for deep sleep, and reduce next-day fatigue.

L-Theanine: Unwind and De-stress
L-Theanine, a compound found in green tea, has been widely studied for its ability to counteract overstimulation, promote relaxation, and reduce anxiety. It increases alpha brain waves, associated with relaxation and REM sleep.

GABA: A Neurotransmitter for Tranquility
Gamma-Aminobutyric Acid (GABA) is a neurotransmitter that promotes relaxation and sleep by inhibiting nerve activity in the brain, helping to quiet the mind for deep, uninterrupted sleep.

Magnesium: The Mineral for Relaxation
Magnesium is an essential mineral involved in over 300 biochemical reactions in the body. It plays a significant role in muscle relaxation and the regulation of the sleep-wake cycle by supporting your natural production of melatonin.​

For best results, take it 30-60 minutes before bed. Experiment with the amount of water you use; more water will mellow the flavor and help it dissolve more quickly. Thirdzy is formulated for nightly use, and consistent users often see the greatest improvements in sleep quality.​

Many people notice a difference from the first night. L-Theanine and GABA have a gentle calming effect that becomes noticeable within 20 to 40 minutes. With consistent use, sleep quality and recovery can continue to improve over several weeks. For those deficient in magnesium, there may be a loading phase to reach ideal levels. Joint and muscle benefits from collagen are often noticeable after 4 to 12 weeks, with anti-inflammatory effects potentially improving soreness sooner.​

Thirdzy contains ingredients dosed in clinically relevant amounts, meaning we use quantities shown in scientific studies to promote sleep and improve sleep quality. However, every sleep challenge is unique. Our products are designed to support better sleep quality and recovery but are not intended to treat or cure any disease or pathology. If you have any medical conditions or are taking medication, we recommend consulting your doctor about your best options.​

Besides helping with sleep quality, the collagen and magnesium in Thirdzy support the natural regeneration processes throughout your body following physical activity. Benefits include joint and bone health, improved muscle recovery, hydration, electrolyte balance, reduced fine lines and wrinkles, and healthier skin, hair, and nails.​

Non-active ingredients include:​

• Malic acid & natural flavors (for taste)
• Stevia leaf extract (for sweetness)
• Silicon dioxide (to prevent clumping)
• Beet root powder (for color)

No. Thirdzy is all-natural and does not lead to dependency. It does not contain melatonin, so it does not replace your own production of sleep hormones. It can be used as often as needed without concern about dependency. Some users report that their sleep improves even on nights they don't take it, as many ingredients work systemically, not just before bedtime.​

Yes. Even if you are a strong sleeper, the functional ingredients in Thirdzy provide nutrients that support better repair and recovery of joints, muscles, ligaments, tendons, and bones. Magnesium, L-Theanine, and GABA also help calm your nervous system for better recovery scores on sleep trackers and support hydration and electrolyte balance.​

Maybe. Hormonal changes during menopause can significantly affect many body processes, including sleep. Since every person is unique, we cannot promise that Thirdzy will "fix" your sleep. However, many menopausal and perimenopausal women have found it helpful.​

There aren't enough studies on our ingredients during pregnancy for us to say it's a safe option. Please consult your primary healthcare practitioner, who may have experience with pregnant clients using these ingredients safely.​

It depends on how much of a purest you are around fasting. Some people will say that anything other than water isn't fasting.

However, if you're fasting because you're trying to get the metabolic benefits of not having fluctuations in your blood sugar and insulin levels, then 1 scoop of Thirdzy is going to have very little impact on your fast. There is no sugar and only 9g of protein (in the 10g of collagen) - which is not enough to push your body out of a metabolically fasting state. 

We do not recommend using Thirdzy while under the influence of alcohol or other drugs.

While having a drink with dinner and then taking your Thirdzy is very unlikely to be a problem. Your liver processes both natural supplements and alcohol (as well as other over the counter and pharmaceutical substances). Having any combination of substances in your blood will slow down their metabolism, increasing the time that they are in your body.

Alcohol also exerts significant negative effects on your sleep quality – particularly REM sleep – that will counter the positive benefits of Thirdzy.

The 'consult a health care provider for use beyond 4 weeks' statement is something that Health Canada requires. Nearly all supplements - even mutivitamins and minerals, in Canada have some form of 'consult a health practitioner for use beyond x timeframe.' 

There is not a specific reason for the 4 week timeline - none of the ingredients show negative effects after use of longer durations. In fact, many of the studies on the ingredients use intervention timelines of 12 weeks. 

Yes! Every batch of product is third party tested and certified by Informed Sport. They test to confirm both our levels of active ingredients and the purity of our product – including for over 250 substances that are banned in sports/competition. Our product is safe for athletes competing at all levels.

Thirdzy is formulated and packaged in the United States. 

Orders shipped to addresses across the continental U.S. and Canada are normally delivered within 5 business days. Sometimes orders can take longer than this, especially to remote destinations and/or during busy mail seasons. 

If you’re in a hurry to get your order, we offer expedited shipping across the continental U.S. and Canada. Our expedited orders normally arrive within 2-3 business days. Sometimes our carriers disable expedited shipping from being offered at checkout during peak seasons, when they are unable to fulfill expedited service.

You will receive a shipping confirmation from us after placing your order, which contains tracking information, so you can check on the status of your delivery.

We currently have domestic shipping across the U.S. (including Alaska, Hawaii, and Puerto Rico) and across Canada.

We also offer international shipping to most destinations which ships from our warehouse in the US.

All of our domestic US & Canada shipping is offered at convenient flat rates. 

Standard Shipping:

• Continental U.S. and Puerto Rico: U$6.00 
• Hawaii and Alaska: U$15.00
• Canada: C$7.00

Expedited Shipping:

• Continental U.S. and Puerto Rico: U$12.00 
• Hawaii and Alaska: not available
• Canada: C$15.00

All other international destinations:

• Shipping, duty and taxes are calculated at checkout. No surprises!
• Your order will ship out of our US warehouse and shipping rates and times are calculated for you based on shipping from the US.

We offer free standard shipping in the USA and Canada on orders over $95.

The recent
U.S.-Canada tariff changes will not affect
the price you pay for Thirdzy. Any cost increases incurred by Thirdzy
for certain of our inputs will not be passed on to you. We are committed to the
highest integrity inputs throughout our supply chain and will absorb the impact
of tariffs in order to continue delivering the formulation you rely on to fuel
your best rest.

Additionally,
because we have warehouses in both countries, Canadian and US orders never cross the border—which means no duties,
no surprise fees, and no delays. Your Thirdzy orders ship locally, so you can
count on fast, hassle-free delivery every time. 

Nothing to worry about. Shipping carriers can prematurely mark packages as delivered or it might have been dropped off at a front desk or mailroom. If you still haven’t received your order by the end of the business day following it being marked delivered, let us know at zteam@thirdzy.com and we’ll get to the bottom of it!

Darn! Unfortunately, that happens sometimes while orders are in transit. 

Please email us at zteam@thirdzy.com. Include your order number and details on the damage and we’ll get it sorted out for you asap.

At any time you can skip, pause, change delivery frequency and manage all of your subscription details through your account. You can cancel your subscription through the portal, or you can also email zteam@thirdzy.com.

Click here for a quick video on this.

Your purchase from Thirdzy is 100% RISK FREE. If you're not experiencing better sleep quality after 30 nights of consistent use, we'll give you your money back. Period. 

Click here for our full hassle-free refund policy details.