Femme épuisée qui cherche de l'énergie naturellement

CARENCES Persistent fatigue: the silent deficiencies behind it

Paul-Etienne Jacob PAUL-ETIENNE JACOB

3min reading time

You sleep 7 to 8 hours a night, but you wake up exhausted. You have trouble concentrating in the middle of the day. You experience persistent brain fog, a lethargy that coffee no longer combats. This chronic fatigue affects a large part of the working population, and its cause is not always a lack of sleep.

Very often, silent nutritional deficiencies are involved - insufficient to trigger a disease, but enough to undermine your vitality every day.

📖 Also read: Frequent night awakenings: why they happen and how to get deep sleep back

Understanding chronic fatigue: which deficiencies should you look for?

The micronutrients most often involved in persistent fatigue:

  • Iron (ferritin): oxygen transport to the cells depends on iron. Low ferritin (even without anemia) is enough to cause marked physical and cognitive fatigue - EFSA-approved claim
  • Magnesium: involved in more than 300 enzymatic reactions, it is essential for muscle and psychological functions. 75% of people in France consume less than the recommended amounts
  • Vitamin D: very common deficiency in France (especially Sept.-March), associated with fatigue, muscle pain and mood disorders
  • B vitamins (B1, B2, B3, B5, B6, B9, B12): all contribute to cellular energy metabolism. B12 deficiency in particular is common among vegetarians and vegans
  • Zinc: supports the immune system and macronutrient metabolism

A blood test is the only way to confirm a specific deficiency. In the meantime, filling the most common deficiencies with a comprehensive formula is a reasonable and well-tolerated approach.

Natural solutions for getting your energy back

A few fundamental habits to adopt before supplementation:

  • Optimize your sleep: don't try to "catch up on sleep debt" at the weekend - prioritize consistent sleep and wake times
  • Limit energy disruptors: coffee after 2 p.m., screens before bed, meals that are too heavy in the evening
  • Include protein at breakfast: stabilizes blood sugar and prevents the 11 a.m. energy spike-crash
  • Move even when you're tired: brisk walking or gentle yoga stimulate the production of mitochondria
  • Stay hydrated: dehydration of 1-2% is enough to reduce cognitive abilities by 10-15%

How do you choose an anti-fatigue supplement?

Essential criteria:

  • Full spectrum of B vitamins: B1 to B12 in bioavailable forms (methylcobalamin for B12, methylfolate for B9)
  • Well-tolerated iron: iron bisglycinate is better absorbed and less constipating than iron sulfate
  • Adaptogenic plants: rhodiola (Rhodiola rosea) is one of the best-studied options for nervous fatigue and stress resilience
  • What to avoid: underdosed formulas that tick the boxes without reaching effective levels, and stimulants (caffeine, guarana) that mask fatigue without treating it

The Epycure solution: the Multivitamin+ Course

The Epycure Multivitamin+ Course (also available under the name Essential Anti-Fatigue) is a 20-in-1 formula designed to address the most common deficiencies:

  • Rhodiola rosea (root): an adaptogenic plant whose clinical studies validate its effects on nervous fatigue and overwork
  • Iron: EFSA claim - contributes to normal oxygen transport and reduces fatigue
  • Vitamin C: improves the absorption of non-heme iron and supports the immune system
  • Magnesium: EFSA claim - contributes to normal psychological and muscle functions
  • Vitamins B1, B2, B3, B5, B6, B9, B12: comprehensive energy metabolism support
  • Vitamin D3: immune system and mood
  • Zinc + selenium: antioxidant protection and immune support
  • Spirulina: a natural source of protein, iron and micronutrients

Lab’Epycure results

  • 97% of testers felt in better physical and mental shape
  • +1 tester in 2 felt less overworked from Day 30
🌿 Our Epycure solution:
Multivitamin+ Course - Rhodiola + iron + magnesium + 7 B vitamins + vitamin D3 + zinc

Recommended protocol

Dosage: 2 capsules per day, in the morning with breakfast to promote iron absorption thanks to the vitamin C in the formula.

Expected timeline:

  • Day 14 to Day 21: first signs of more stable energy during the day
  • Day 30: reduced brain fog and less subjective overwork
  • Day 60-90: optimized recovery and lasting vitality
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Conclusion

Persistent fatigue is rarely psychological: it is very often biochemical. Identifying and correcting silent deficiencies (iron, magnesium, vitamins B and D) with a comprehensive, clinically coherent formula is the most effective long-term strategy.

The Epycure Multivitamin+ Course was designed by nutritionists to cover all these deficiencies in a single capsule. Made in France, B Corp, AFNOR HACCP certified, vegan and gluten-free - because feeling good shouldn't be complicated.

Paul-Etienne Jacob
PAUL-ETIENNE JACOB

CEO, Epycure