Six active ingredients. Each one chosen on the evidence.

New Zealand Whey Protein Isolate

Why does protein matter more for women after 35?

As we get older, the body becomes less efficient at using dietary protein to build and maintain muscle, so protein needs can increase. Expert groups reviewing the evidence recommend that healthy older adults aim higher than the standard adult intake to help support muscle through the years when it becomes harder to hold onto — including midlife and after menopause.

Protein contributes to the maintenance of muscle mass. Research suggests that adequate protein, particularly when combined with regular activity such as resistance training, supports the maintenance of lean muscle. We’re careful with this: the strongest evidence is for protein plus exercise, not protein alone, and the research specific to post-menopausal women is still developing.

Not all protein does the same job. Whey protein isolate is a complete protein — rapidly digested and naturally high in leucine, an amino acid that helps stimulate muscle protein synthesis. We chose an extra-filtered isolate for a cleaner, naturally lower-lactose source that mixes light rather than heavy.

Magnesium L-threonate

Why does Salus use magnesium L-threonate?

Magnesium is an essential mineral involved in hundreds of processes in the body, including the normal functioning of the nervous system. Magnesium L-threonate is a specific form that has become the focus of emerging research into cognition — and it’s the reason we chose this form rather than a more common one.

Here we’re deliberately careful with the science. In preclinical (animal) studies, magnesium L-threonate raised magnesium levels in the brain and enhanced learning and memory — but that brain-delivery finding has not been established in humans. A small number of early human trials have explored magnesium L-threonate and cognition and sleep, with modest results. This research is preliminary, and we present it that way: an area researchers are actively exploring, not a proven effect.

Vitamin D3

Why does Salus include vitamin D3?

Vitamin D helps the body absorb calcium, and contributes to the maintenance of normal bones and to the normal function of the immune system. It’s foundational: without enough vitamin D, calcium from food and supplements isn’t absorbed as effectively.

In New Zealand, most people get enough vitamin D from sensible sun exposure across the year. But some groups are at higher risk of low vitamin D — including people with naturally very dark skin, those who cover up or avoid the sun for cultural or medical reasons, people who are housebound or have low mobility, and those in the southern South Island who spend little time outdoors over winter. We include 25 mcg (1,000 IU) per serving — above the daily requirement, and well within established safe limits.