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Nutritional supplements for adults

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vitamin supplements

Last updated: 9/23/2025

/ Published: 5/21/2021

Nutritional supplements for adults

Nutritional supplements provide an extra source of nutrients. In this post, however, we explain when they should be used and the consequences of prolonged overuse of nutritional supplements in adults. Keep reading.Nutritional supplements are formulated to help tackle dietary deficiencies in adults who are lacking certain vitamins or minerals. They are usually taken orally and contain one or more ingredients such as amino acids, minerals, vitamins, enzymes and herbs. They also come in different formats such as powders, liquids (shakes or juices) or semi-liquid products (custards). Most importantly, these supplements should be combined with a healthy diet.

When should nutritional supplements be used?

As mentioned above, they should only be used with the approval of a nutrition specialist, as overuse can lead to a list of fairly serious consequences for the individual. We explain more below.

Consequences of overusing nutritional supplements

Excessive and prolonged intake of these supplements can harm the body and cause:

  • Colic.
  • Damage to the immune system.
  • Diarrhoea and gastrointestinal problems.
  • Headaches.
  • Nausea and vomiting.
  • Loss of appetite, such as anorexia.
  • Reduced levels of low-density lipoproteins in the blood.
  • Weight gain.
  • Neurological disorders.

The consequences of excessive and prolonged overuse of these nutritional supplements are compared to zinc poisoning. For this reason, it is recommended to obtain nutrients naturally from food before turning to the supplements we are discussing here.

The best nutritional supplements

Meritene Strength and Vitality Shake Neutral Flavour

This nutritional supplement is designed to fight tiredness, fatigue and stress built up during the day. It also helps to restore vitality, energy and physical strength.

Meritene Drink Strength and Vitality

This is a nutritional supplement rich in protein, vitamins and minerals, helping to complement your diet and combat feelings of fatigue, tiredness and muscle weakness. You will also find strength and vitality in delicious shakes with vanilla and chocolate flavours. They are easy to carry and easy to take, anytime and anywhere.

Meritene Fibre Shake

A nutritional supplement to restore strength and vitality. It helps reduce tiredness and fatigue caused by daily stress and contributes to maintaining muscle mass. Flavours include vanilla, chocolate, strawberry and coffee.

Ensure Pack Nutrivigor Drink

This vanilla-flavoured product is a source of protein, calcium and vitamin D, which contribute to maintaining muscle mass and the normal function of muscles and bones.

Ensure Max Protein Shake

And finally, these nutritional shakes with vanilla, chocolate and coffee flavours help to maintain the strength and energy of the athlete in you thanks to their protein, vitamin B2 and calcium content. No added sugar. Ensure Max Protein Vanilla Flavour Shake 330 ml. At Farmaciasdirect, we recommend speaking to a nutrition specialist before taking any kind of nutritional supplement. Through the Farmaciasdirect website you can contact our team of pharmacists, who will offer you free personalised advice.

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