Discover John Bell & Croyden

A guide to mineral supplements: learn how to choose the right mineral, dose and formulation, with practical safety advice for everyday wellbeing and needs.

A refined guide to lesser-known minerals: boron, selenium, copper - their dietary roles, food sources and when a supplement may be appropriate for you.

Compare magnesium glycinate vs citrate benefits, from absorption and sleep support to digestion, side effects and choosing a supplement that suits you.

Our guide to magnesium supplements explains forms, doses, timing and safety, helping you choose thoughtfully for sleep, muscles and everyday wellbeing.

Discover the best vitamins for busy professionals, from vitamin D and B12 to iron and magnesium, with clear guidance on choosing only what you need first.