During the winter, our bodies can’t make enough from the little sunlight we get, so the government recommends you should consider vitamin D supplements to top up your system.
There is only so much the body can take however, and you should not exceed 4000IU (100 micrograms) of vitamin D a day.
Taking too much vitamin D can lead to a calcium build-up that can subsequently weaken your bones, damage your kidneys and your heart.
Alternatively, it is safer to get your vitamin D from your diet.
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You can get vitamin D from oily fish such as salmon, sardines, herring, and mackerel.
Furthermore, you can also find it in red meat, liver, egg yolks and some fortified foods such as breakfast cereals.
It is recommended you take vitamin D supplements from September to late March or early April, the NHS noted.
As well as vitamin D, Dr Brewer recommends multivitamins.
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These include the eyes, brain, heart, bones, joints and skin as well as development in infants and children.
Omega-3 helps to keep your eyes healthy as omega-3 DHA makes up the retina of your eye.
If you don’t have enough omega-3 you could develop problems in your vision.
Some research also suggests omega-3 can help those suffering with anxiety disorders.
Probiotics, in contrast to Omega-3, work differently.
They help restore the natural balance of bacteria in your gut, stomach, and intestines, especially after you’ve had an illness.
It has been suggested that probiotics could be useful in preventing diarrhoea or relieving the symptoms of irritable bowel syndrome.
If you have any concerns about vitamins or vitamin deficiencies, there is more information available on the NHS and in your local pharmacy.