Tiredness rarely has a single cause: too little sleep, an unbalanced diet, stress and a higher need for certain nutrients often play a role together. Vitamin B12, folic acid, vitamin C and iron officially contribute to a reduction in tiredness and fatigue when a shortfall in these is the cause. A healthy lifestyle remains the first step, and a targeted supplement can then have a place once a shortfall is established.
What are the most common causes of tiredness?
Chronic tiredness often has more than one cause at once: too little quality sleep, a heavy workload, prolonged stress, a diet low in essential nutrients, or a specific shortfall such as iron or vitamin B12. In women of childbearing age, monthly blood loss increases iron requirements, which can explain persistent tiredness. A lack of natural daylight in autumn and winter also plays a role for some people, as does a diet too low in fruit, vegetables and quality protein. Before considering a supplement, it's worth checking these factors, and seeing a doctor if the tiredness continues without a clear explanation, particularly if it comes with other symptoms such as weight loss or a persistent fever.
Which nutrients officially contribute to reduced tiredness?
Several nutrients have a recognised function at European level in reducing tiredness and fatigue: vitamin B12, folic acid (vitamin B9), vitamin C and iron are among them. Nature Avenue's Multivitamin Energy combines 20 vitamins and minerals, including a high dose of vitamin B12, to cover these needs in a single daily capsule.
Magnesium, for energy and relaxation
Magnesium plays a role in normal energy metabolism and the normal function of the nervous system. A shortfall can show up as persistent tiredness or muscle tension, as we explain in our article on the signs of magnesium deficiency. The Magnesium & Vit B Complex formula combines 171mg of magnesium with a complete B-vitamin complex, for an evening dose that also supports relaxation.
Iron, particularly for women
Iron deficiency is a common cause of tiredness, especially in women of childbearing age. The Iron Complex combines iron bisglycinate, which is gentler on the stomach, with vitamin C, which contributes to increased absorption. Our article on women and iron deficiency covers why this need is often higher for them.
What's the best starting point?
If your diet is generally varied but you're feeling a temporary energy dip, a complete multivitamin such as Multivitamin Energy covers a broad range of needs in one simple dose. If stress or muscle tension dominate, the magnesium and B-complex is more targeted. If you're a woman with heavy periods or follow a vegetarian diet, the iron complex deserves particular attention. When in doubt, a blood test remains the most reliable way to identify the exact cause, rather than guessing which of these factors applies to you.
What about everyday habits?
A supplement never replaces the basics. A regular sleep rhythm, with stable bedtimes and wake-up times, remains the most decisive factor for your energy level. Regular, even moderate, physical activity also improves sleep quality and reduces the feeling of tiredness over the medium term, even though the immediate effect can feel counterintuitive. Cutting back on caffeine later in the day and setting aside time to wind down before bed usefully round out a routine built around the nutrients mentioned above.
In short, tiredness rarely has a single cause, and a healthy lifestyle remains the foundation. Vitamin B12, folic acid, vitamin C and iron officially contribute to a reduction in tiredness, and a targeted supplement can support your daily routine once a genuine need is established.
Food supplement. Not to be used as a substitute for a varied diet and a healthy lifestyle.
