Chronic fatigue: 7 supplements that really help

🎯 Quick verdict
ANALYSIS FIRST, then supplements! Give: ferritin, B12, vitamin D, TSH, complete blood count. In 80% of cases, the cause of fatigue is iron deficiency, D3 deficiency or thyroid problems. Basic three: Iron bisglycinate (if deficiency) + B12 methylcobalamin + CoQ10 ubiquinol. Magnesium malate in the morning for energy. Rhodiola for stress-fatigue.
Chronic fatigue: first tests, then supplements
Fatigue is a symptom, not a diagnosis. Medical reasons must be ruled out before purchasing supplements. In 80% of cases, the reason is in the first three points of this list:
- Ferritin - iron reserves. Optimally 40-60 ng/ml, not 12-15 as in the “norms”
- Vitamin B12 - optimally more than 500 pg/ml (not 200, as in the lower limit)
- 25(OH)D - vitamin D. Optimal 40-60 ng/ml
- TSH - thyroid gland. Subclinical hypothyroidism is a common cause of fatigue
- Complete blood count - hemoglobin, red blood cells, MCV
Without these tests any supplements are shooting blindly. Analyzes cost 2000-3000 rubles and can save months of useless experiments.
1. Iron - if ferritin is low
Iron deficiency is the #1 cause of fatigue in women. With ferritin below 30, you will be tired, even if your hemoglobin is “normal” (hidden deficiency).
- Form: Bisglycinate - does not cause constipation
- Dose: 25-50 mg every other day (better absorbed every other day!)
- With vitamin C 200-500 mg on an empty stomach
- Ferritin control after 3 months
2. B12 - especially for vegetarians
Vitamin B12 is critical for energy metabolism and the nervous system. In vegetarians and vegans, deficiency develops in 100% of cases without supplements.
- Form: Methylcobalamin (active, no conversion needed)
- Dose: 1000-5000 mcg sublingually (under the tongue)
- The effect on energy is noticeable after 1-2 weeks with a deficiency
3. CoQ10 ubiquinol - cell energy
CoQ10 is involved in the production of 95% of cellular energy. The level drops with age. With statins it drops by 40%.
- Form: Ubiquinol (not ubiquinone) - active, better absorbed after 35 years
- Dose: 100-200 mg with a fatty meal in the morning
4. Magnesium malate - energy + relaxation
Malate is a participant in the Krebs cycle (the main energy process). Magnesium malate = energy from malate + relaxation from magnesium. Take in the morning (not in the evening - it may invigorate).
5. Vitamin D3 + K2
D3 deficiency = fatigue, weakness, apathy, reduced immunity. 4000-5000 IU with K2 MK-7 and fatty foods.
6. Creatine - fast energy
Not just for the gym. 3-5 g/day increases phosphocreatine reserves - fast energy for the brain and muscles. Particularly useful for mental fatigue and lack of sleep.
7. Rhodiola rosea - for stress fatigue
Adaptogen with a quick effect. 200-400 mg in the morning on an empty stomach. Reduces fatigue from stress within 1-2 weeks. Do not combine with antidepressants without a doctor.
Strategy
- Step 1: Give ferritin, B12, D3, TSH, UBC
- Step 2: Eliminate any deficiencies found (iron, B12, D3)
- Step 3:Add CoQ10 and Magnesium Malate
- Step 4: For stress fatigue - Rhodiola in the morning
- Step 5:Reevaluate after 8 weeks
Golden rule: If fatigue does not go away after 3 months of deficiency correction, consult a doctor. Chronic fatigue can be a symptom of serious diseases (autoimmune, oncology, heart failure) that cannot be treated with supplements.
| If | Dose | When | Additive | Priority | Effect through |
|---|---|---|---|---|---|
| Ferritin less than 40 | 25-50 mg every other day | Fasting with vit.C | Iron bisglycinate | ★★★★★ FIRST | 4-8 weeks |
| B12 less than 500 pg/ml | 1000-5000 mcg | In the morning sublingually | B12 methylcobalamin | ★★★★★ | 2-4 weeks |
| Age 35+, statins | 100-200 mg | In the morning with fatty foods | CoQ10 ubiquinol | ★★★★☆ | 4-8 weeks |
| Cramps, fatigue | 200-400 mg | In the morning | Magnesium malate | ★★★★☆ | 2-4 weeks |
| 25(OH)D less than 40 | 4000-5000 IU | In the morning with fatty foods | Vitamin D3 + K2 | ★★★★☆ | 4-8 weeks |
| Mental/physical fatigue | 3-5 g | At any time | Creatine | ★★★☆☆ | 1-2 weeks |
| Stress-fatigue | 200-400 mg | In the morning on an empty stomach | Rhodiola rosea | ★★★☆☆ | 1-2 weeks |
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Recommended products

Jarrow Formulas
Jarrow Methyl B-12 1000 mcg
Methylcobalamin — active B12 form, better absorbed. B12 deficiency is a common cause of fatigue, especially in vegetarians and vegans. Dissolves, lemon flavor.

Doctor's Best
Doctor's Best Ubiquinol (CoQ10) 50 mg
Ubiquinol — active CoQ10 form (Kaneka), better absorbed than ubiquinone. Fuel for mitochondria — the cells' power plants. Especially after 40 and on statins.
Thorne
Thorne Iron Bisglycinate (iron)
Iron in chelated form (Ferrochel) — gentle on stomach, no constipation. Iron deficiency is the #1 cause of hair loss in women. NSF certified. Check your ferritin!

NOW Foods
NOW Foods Magnesium Malate
Magnesium malate (with malic acid). Supports energy and muscles, relaxation. Good for fatigue alongside anxiety.
Doctor's Best
Doctor's Best Vitamin D3 + K2 MK-7
Vitamin D3 5000 IU (lichen-based, vegan) + K2 (MK-7). K2 directs calcium to bones, not arteries. With coconut MCT for absorption. Immunity and bones.

NOW Foods
NOW Foods Creatine Monohydrate (capsules)
Pure creatine monohydrate in capsules. Fast energy (ATP) for brain and muscles, reduces brain fog. Tasteless, no mixing.

NOW Foods
NOW Foods Rhodiola Rosea 500 mg
Rhodiola adaptogen (rosavins + salidroside). Reduces stress, fights fatigue and brain fog. Taken in the morning. Stable energy without jitters.
Sources and studies
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