I was browsing through my Zip app and found this limited time offer of 25% cashback, which ends tonight.
If you have Zip, go to your Zip app cashback section, scroll down to see the Limited Time Rewards, you should find this Vitable 25% cashback offer, click on it and click on the Shop now button, it will then bring you to their website.
If you don't have Zip, just go to their website https://www.vitable.com.au/ and enjoy their 40% off, which also ends tonight.
Next, you can take their quiz to personalise the vitamins and/or supplements you need (even if you don't buy anything, I think it is a good quiz to know what you need for your daily good health), then your first pack is 40% off with free delivery. Pay with Zip to get a further 25% cashback.
NOTE: Your pack is a 30 days worth of supply and you are put in a monthly subscription. If you don't want the subscription, remember to go into your vitable account to pause your subscription.
For example, my pack was around $70, after 40% off its $42, then I paid via Zip and I immediately got $10.5 cashback put back into my Zip account. At the end I only spent $31.50, which is more than half price of $70.
Keep in mind cashback at Cashrewards is $11.20, $10 at Shopback or $30 at Cheddar (click the cashback button under 'go to deal' on OzBargain). Might work out better for some depending on your order total or what providers you use.