Brain fog and concentration: what helps, and which vitamins have real claims
What helps with brain fog and concentration?
"Brain fog" is not a medical diagnosis, and if it is persistent or new you should speak to your GP. For everyday dips in concentration, the biggest levers are sleep, drinking enough water, regular meals, daylight and movement, and fewer interruptions. On the supplement side, only vitamins and minerals have approved UK claims: Iron, Folic Acid, Vitamin B12, B6, B5, Magnesium and Vitamin C contribute to the reduction of tiredness and fatigue, and Iodine, Iron and Zinc contribute to normal cognitive function. They help most when your diet is short of them.
Vitamins and minerals with approved UK claims
| Approved claim (in part) | Where Grass & Co. uses it | |
|---|---|---|
| Vitamin B12 | Normal psychological function; reduction of tiredness and fatigue | FOCUS range, ENERGY |
| Vitamin B5 | Normal mental performance; reduction of tiredness and fatigue | FOCUS MAX gummies, DREAM |
| Vitamin B6 | Normal psychological function; reduction of tiredness and fatigue | RELAX, DREAM |
| Magnesium | Normal psychological function; reduction of tiredness and fatigue | RELAX, DREAM |
| Iron | Normal cognitive function; reduction of tiredness and fatigue | ENERGY |
| Folic Acid | Reduction of tiredness and fatigue | ENERGY |
Everyday habits, ranked by effort
| Effort | Why it matters | |
|---|---|---|
| Drink water | Low | Even mild dehydration can leave you feeling flat |
| Get outside in daylight | Low | Helps set your body clock for better sleep |
| Eat regular meals | Low | Avoids the mid-afternoon slump from skipped food |
| Protect your sleep | Medium | The biggest single factor in how clear you feel |
| Single-task in blocks | Medium | Constant switching drains attention |
The trade-offs
Habits
- Free, and they work for most people
- No risk of overlapping supplements
- Take consistency
- Slower to notice
Vitamin and mineral supplements
- Approved claims you can rely on
- Useful if your diet is short of them
- Not a fix for poor sleep
- Check for overlap with any multivitamin you take
Fix the basics first. If you still want support, choose a supplement built on vitamins and minerals with approved claims: B12 for psychological function, Iron and Folic Acid for tiredness, Magnesium and B6 for the evening. See your GP if brain fog is persistent or comes with other symptoms.
No supplement, ours included, replaces sleep, food and water. If a blood test shows you are low in something specific, a single-nutrient product your GP or pharmacist recommends may suit you better than a blend.
Mentioned in this piece
Questions people ask
- What vitamins help with brain fog?
- No vitamin is authorised to treat brain fog. Vitamin B12, B6, B5, Iron, Folic Acid and Magnesium contribute to the reduction of tiredness and fatigue, and Iodine, Iron and Zinc contribute to normal cognitive function.
- When should I see a doctor about brain fog?
- If it is persistent, getting worse, came on suddenly, or comes with other symptoms such as extreme tiredness, low mood or memory problems, speak to your GP.
- Does caffeine help concentration?
- Caffeine increases alertness for a few hours, but too much or too late in the day can disturb sleep, which makes the next day harder.
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Grass & Co. products are food supplements and are not intended to diagnose, treat, cure or prevent any disease. Do not exceed the stated dose. Most products are for adults; CBD is for adults only.