The authorised list names them. Vitamin C, vitamin B5, vitamin B6 and vitamin B12 each contribute to the reduction of tiredness and fatigue, and all four are in one Core™ portion.
- Four for tiredness. Vitamin C 120 mg, vitamin B5 5 mg, vitamin B6 1.7 mg and vitamin B12 24 µg per portion.
- Five for energy-yielding metabolism. Biotin joins those four: biotin contributes to normal energy-yielding metabolism.
- One portion a day. The vitamins come in the same as 11,000 mg of hydrolysed marine collagen.
of 106 women found our liquid marine collagen easy to include in their daily routine during an 8-week trial.
- 95%felt their skin's appearance improved
- 86%healthier hair
- 76%stronger nails
Which vitamins help with tiredness?
Vitamin C, vitamin B5, vitamin B6 and vitamin B12 are the four vitamins in Core™ that the EU links to tiredness. The EU keeps a list of permitted health claims made on foods, and a vitamin may only speak about tiredness if that list says so, in the words the list gives.1
Among the vitamins in Core™, four have that permission. The wording is identical for each, so we quote it as written:
- Vitamin C contributes to the reduction of tiredness and fatigue.
- Vitamin B5 (pantothenic acid) contributes to the reduction of tiredness and fatigue.
- Vitamin B6 contributes to the reduction of tiredness and fatigue.
- Vitamin B12 contributes to the reduction of tiredness and fatigue.
All four are in every portion of Core™, at the amounts shown in the table below.2
What does "energy-yielding metabolism" mean?
Energy-yielding metabolism is how your body turns food into energy. You will meet the phrase on labels too, and it sounds more technical than it is.
Five nutrients in Core™ hold this claim.1 Vitamin C contributes to normal energy-yielding metabolism. Vitamin B5 contributes to normal energy-yielding metabolism. Vitamin B6 contributes to normal energy-yielding metabolism. Vitamin B12 contributes to normal energy-yielding metabolism. And biotin contributes to normal energy-yielding metabolism too, which is why the energy count is five while the tiredness count is four.
Notice the word "normal" in every line.
assets/img/blog/en-morning.webpWhich vitamins are in one Core™ portion?
One portion of Core™ contains vitamin C, vitamin B5, vitamin B6, vitamin B12, biotin and vitamin D. The table below sets out the five linked to tiredness and energy, with the amount of each per portion; % NRV is the share of the daily reference amount printed on food labels.2 The right-hand column gives the authorised wording for each.1
The vitamins in one portion of Core™
Amount per portion from the product label, with the authorised claims that relate to tiredness and energy.
| Nutrient | Amount per portion | Authorised claim |
|---|---|---|
| Vitamin C | 120 mg (150% NRV) | Vitamin C contributes to the reduction of tiredness and fatigue, and vitamin C contributes to normal energy-yielding metabolism. |
| Vitamin B5 | 5 mg (83% NRV) | Vitamin B5 contributes to the reduction of tiredness and fatigue, and vitamin B5 contributes to normal energy-yielding metabolism. |
| Vitamin B6 | 1.7 mg (121% NRV) | Vitamin B6 contributes to the reduction of tiredness and fatigue, and vitamin B6 contributes to normal energy-yielding metabolism. |
| Vitamin B12 | 24 µg (960% NRV) | Vitamin B12 contributes to the reduction of tiredness and fatigue, and vitamin B12 contributes to normal energy-yielding metabolism. |
| Biotin | 5,000 µg | Biotin contributes to normal energy-yielding metabolism. |
Three of these four vitamins are at or above their full reference amount: vitamin C at 150% NRV, vitamin B6 at 121% and vitamin B12 at 960%. Vitamin B5 comes in at 83%. You get all of it from one small pour, alongside the collagen, so there is no second tablet to remember.
Which vitamins carry a claim for mental performance?
Vitamin B5 is the one vitamin in Core™ with an authorised claim for mental performance. The authorised list also has wording for psychological function and the nervous system, and several of the same vitamins hold it.1
Vitamin B5
Vitamin B5 contributes to normal mental performance. It is the only nutrient in Core™ with this particular claim, and each portion has 5 mg.
5 mg per portion · 83% NRV
Vitamin C, biotin, B6 and B12
Vitamin C contributes to normal psychological function. So does each of the others here: biotin contributes to normal psychological function, vitamin B6 contributes to normal psychological function, and vitamin B12 contributes to normal psychological function.
Four nutrients in every portion
The same four again
Vitamin C contributes to normal functioning of the nervous system. Biotin contributes to normal functioning of the nervous system, vitamin B6 contributes to normal functioning of the nervous system, and vitamin B12 contributes to normal functioning of the nervous system.
Four nutrients in every portion
Read across those cards and you will see vitamin C, vitamin B6 and vitamin B12 under tiredness, under energy, under psychological function and under the nervous system.
Which other nutrients in the portion carry a claim?
Selenium and vitamin D carry authorised wording of their own, and vitamin B6 and vitamin B12 hold further claims beyond tiredness and energy.1
- Red blood cells. Vitamin B6 contributes to normal red blood cell formation, and vitamin B12 contributes to normal red blood cell formation.
- Thyroid. Selenium contributes to the normal thyroid function. One portion has 27.5 µg of selenium, 50% NRV.
- Muscles. Vitamin D contributes to the maintenance of normal muscle function. One portion has 60 µg of vitamin D.
- Protein. Vitamin B6 contributes to normal protein and glycogen metabolism.
If you are reading this around menopause, that stage has its own guide: collagen and menopause.
What did women in our trial report?
In our own trial, 106 women took our liquid marine collagen daily for 8 weeks and reported back on what they noticed. Participants also reported more energy.2
The trial also recorded how the routine went and what women saw in the mirror.2
found it easy to include in their daily routine.
felt the appearance of their skin improved.
reported healthier hair.
Participants in the 8-week user trial of our liquid marine collagen, photographed before and after.
Skin, hair and nails are the subject of a different article. If that is what you came for, start with what marine collagen does for women.
“The taste is amazing and it is sugar free! Love what it does to my hair, nails and skin.”
★★★★★
Suzanne H.Verified purchase · Amazon, United Kingdom · 26 August 2024
“I can really see the visible changes in my skin and nails.”
★★★★★
Check4YouVerified purchase · Amazon, Germany · 27 December 2023
Verified buyer reviews of our liquid marine collagen, as sold under our manufacturer's own label.
How do you make it a daily habit?
Tie the portion to something you already do every morning, and keep the opened pack where you will see it. A liquid portion makes the habit easy: in our trial, 99% of 106 women found it easy to include in their daily routine.2 The whole thing takes less time than making tea.
- Shake
Wake the pack up
Give it a quick shake before you open it, as the first line of the directions says.
- Pour
Fill the cap
The cap is your measure. One portion is the serving every figure in the table above refers to.
- Drink
Straight or stirred
Take it as it is for the natural berry flavour, or mix it through a glass of water or a smoothie.
- Chill
Back in the fridge
An opened pack lives in the fridge. Seeing it beside the milk each day is a reminder in itself.
- Tie it to something fixed. The first glass of water, the kettle or breakfast will do, so choose one moment and keep the portion there.
- Enjoy it. Core™ is sugar free and fat free, so the portion fits whatever else you eat that day.
You can see the full label and order on the Core™ product page. If you want the collagen dose explained on its own, read how much collagen to take per day.
Questions about vitamins, tiredness and energy
Which vitamins reduce tiredness and fatigue?
On the EU list of permitted claims, four of the vitamins in Core™ qualify. Vitamin C, vitamin B5, vitamin B6 and vitamin B12 each contribute to the reduction of tiredness and fatigue. One portion of Core™ supplies all four.
What are good vitamins for energy for women?
Look for the ones with an authorised energy claim. Vitamin C, biotin, vitamin B5, vitamin B6 and vitamin B12 each contribute to normal energy-yielding metabolism, which means how your body turns food into energy. Core™ has all five in one portion.
Does collagen give you energy?
The authorised energy wording in Core™ belongs to its vitamins: vitamin C, biotin, vitamin B5, vitamin B6 and vitamin B12 each contribute to normal energy-yielding metabolism. In our 8-week user trial of our liquid marine collagen, participants also reported more energy.
How much vitamin B12 is in a Core™ portion?
24 µg per portion, which is 960% NRV. Vitamin B12 contributes to the reduction of tiredness and fatigue and to normal energy-yielding metabolism.
Which vitamin is linked to mental performance?
Vitamin B5. Vitamin B5 contributes to normal mental performance, and a Core™ portion has 5 mg of it, 83% NRV. Vitamin C, biotin, vitamin B6 and vitamin B12 each contribute to normal psychological function.
How do I take Core™ each day?
One portion a day. Shake the pack, fill the cap, then drink it neat or stirred into water or a smoothie, and store the opened pack in the fridge.
