Malcolm Harker products are manufactured by traditional methods from herbs sourced from the New Zealand environment. All Malcolm Harker products are manufactured free from parabens,petroleum, and sodium lauryl sulphate and all of the tonics and elixirs are created to retain body harmony and to assist the body to return to a state of better health.

Many of the Malcolm Harker's tonics have evolved over 30 years of constant research involving constant improvements and refinements in quality and efficacy.

All of the products are manufactured from their base in Waipu, a small town in the northland region of New Zealand.