Australians’ appetite for supplements is no longer limited to their own vitamin cabinets. New retail data shows the country’s wellness boom is now firmly influencing how people care for their pets.

Pet Circle, Australia’s largest online pet retailer, has recorded a 400 per cent year-on-year increase in supplement sales, as customers increasingly add products such as probiotics, joint support formulas and omega-3s to their regular shopping baskets.

The surge reflects a broader consumer shift toward preventative health, a trend long established in the human supplement market and now filtering into pet care.

Dr Tegan Lever, Director of Vet Services at Pet Circle, says, “We’re seeing customers approach their pets’ health the same way they approach their own. Rather than waiting for a problem to arise, they’re proactively supporting gut health, mobility and overall wellbeing.”

The retail growth coincides with increasing scientific interest in companion animal microbiome research. A recent peer-reviewed study, The Gut Microbiome of Australian Cats and Dogs: Dietary Influences, Health Impacts, and Emerging Research, highlights the significant role gut bacteria play in digestion, immune function and broader health outcomes in pets, reinforcing consumer interest in microbiome-supporting supplements.

Pet Circle says the strongest growth is coming from customers incorporating supplements into recurring autoship orders alongside food. This shows a proactive approach, and that products are becoming a regular, planned part of everyday pet care, integrated into ongoing feeding routines rather than bought only in response to illness, injury or ageing-related issues.

Industry observers describe the shift as the next stage of “pet humanisation, where spending on animals increasingly mirrors human lifestyle priorities, particularly in health and wellness.

“Supplements should complement a balanced diet and regular veterinary care, not replace them. The goal is to support long-term health, not create a quick fix.” added Dr Lever.

Cost-of-living pressures may also be playing a role in the trend. Preventative health is increasingly viewed as a way to reduce the risk of more serious, and expensive, veterinary issues down the track. For many owners, supplements represent a relatively affordable way to invest in their pet’s future wellbeing.

As research continues and products become more tailored to life stage, breed and specific health needs, the category shows no signs of slowing. What was once considered a niche or even indulgent purchase is quickly becoming part of everyday pet care.

If current growth rates continue, supplements may soon be as common in the pet aisle as they are in the pharmacy, proof that for many Australians, looking after their pets now looks a lot like looking after themselves.