I saved $55 on Momentous Magnesium Threonate with a low-effort shipping trick to Australia

Why everyone in Australia wants Momentous Magnesium Threonate right now

It seems like every major health podcast coming out of the US lately is talking about the same thing: Momentous Magnesium Threonate. If you are part of the biohacking community in Sydney or Melbourne, you probably know that this specific form of magnesium is the gold standard for cognitive support. It is one of the few forms that effectively crosses the blood-brain barrier, which is why everyone is chasing it for better focus and sleep.

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More about shipping to Australia

As of February 2026, the hype has reached a fever pitch. People are looking for high-purity options that are actually backed by clinical data, and Momentous has positioned itself as the leader in that space. Check our guide on: Read more: Why is this specific US magnesium supplement suddenly the most sought-after bottle in Australia?

The local supply problem in 2026

The issue for those of us down under is that local stock is either non-existent or marked up to eye-watering levels. I recently saw a single bottle listed on a local "specialty" site for nearly double the US retail price. When you add domestic shipping within Australia, you are basically being taxed for being early to the trend.

Most local suppliers are still catching up with the demand seen in the US. This is why many of us have turned to a freight forwarder to get the real deal directly from the source. It is often cheaper to pay for international shipping than to pay the "convenience fee" local resellers charge.

The lazy method to buy from US stores

I am all about doing the least amount of work possible when it comes to logistics. The easiest way to shop us store sites is to use a tax-free us address. This allows you to checkout on the Momentous website just like a US resident would, avoiding the immediate sales tax at the point of purchase in the States.

If you find that a US store doesn't accept your Australian credit card, there is a simple workaround. You can use a proxy shopping or BuyForMe service. They basically do the shopping for you, so you don't have to worry about VPNs or billing address errors. It is the ultimate hands-off approach for the busy shopper. You might also like: Read more: The essential steps I take to source Momentous Magnesium Threonate from the US for Australia delivery.

Shipping Estimates and Specs

Before you hit the buy button, you need to know what you are looking at in terms of box size. Supplements are generally very easy to ship because they are light and sturdy.

Calculating the total cost

I managed to save about $55 by ordering three bottles at once compared to buying them locally. To see if the numbers work for you, I recommend using a shipping calculator. This tool helps you estimate shipping cost before you even place your order with the US retailer.

By consolidating multiple items—perhaps adding some other biohacking tools or US-only skincare—you can lower the per-item cost of your Australia delivery even further. The more you ship in one go, the better the value becomes.

Dealing with import taxes and GST

A lot of people stress about import duties, but for most supplement orders, it is quite straightforward. In Australia, GST/VAT is generally applicable on low-value imported goods. However, since the total for a few bottles of Magnesium Threonate is usually well under the high-value threshold, you just need to factor in the standard 10% GST. Dealing with customs tax is largely handled by the carrier these days, so there isn't much manual paperwork for you to do.

Step-by-step shipping guide

If you are ready to get started, here is the how it works breakdown:

• Sign up for a comGateway account to get your US address.
• Place your order on the Momentous site and use that US address as your shipping destination.
• Once the package arrives at the warehouse, you will be notified.
• Log in and choose to ship to Australia.
• Relax while your package clears customs and arrives at your door.

This step-by-step guide is essentially the only way to ensure you are getting fresh, high-purity stock without the massive markups we see at local health boutiques in 2026. If you want to buy from US ship to Australia, this is the most efficient path I have found.