How to Learn the Vitamins and Their Functions
Vitamins keep the body running, and each has a signature job — vitamin C for immunity, D for bones, K for blood clotting. Nutrition and biology courses test these constantly. This deck pairs each vitamin with its function and the classic deficiency.
There are 12 cards in the deck below. You can read through them, practise them right here with the flip-card player, and then save the deck to study properly with spaced repetition — the method that makes them stick for months, not minutes.
Why the vitamins and their functions is hard to memorize (and the fix)
The letters are abstract and easy to swap. Linking each vitamin to its famous role (and the disease you get without it) makes them memorable.
The fix is active recall plus spaced repetition. Instead of re-reading the list (which feels productive but barely works), you test yourself — pull each answer out of memory — and you review each card on a schedule that stretches over time. Every time you successfully recall a fact, the memory gets stronger and the next review is pushed further out. That's how you go from "I saw it once" to "I just know it."
The fastest way to learn the vitamins and their functions
- Break it into small batches. Learn the fat-soluble ones (A, D, E, K) as a group, then the water-soluble ones (C and the B vitamins).
- Test, don't re-read. Look at the question, say the answer out loud before flipping the card. The little struggle to recall is what builds the memory — a smooth re-read does almost nothing.
- Review on a schedule. Spaced repetition shows you each card right before you'd forget it. Get one right and it comes back in a few days, then a week, then a month. Miss one and it comes back sooner.
- Keep sessions short and daily. Five to ten minutes a day beats a two-hour cram every time. Consistency is the whole game.
One fact per card. Learn the deficiency disease with each vitamin — it is a common exam angle (no C → scurvy, no D → rickets).
The full deck: the Vitamins and Their Functions
Here's every card in the set. Practise them above, or save the deck and let spaced repetition schedule your reviews automatically.
| Vitamin | Function / deficiency |
|---|---|
| What does vitamin A do? | Supports vision and immune function; deficiency causes night blindness |
| What does vitamin C do? | Supports immunity and collagen; deficiency causes scurvy |
| What does vitamin D do? | Helps absorb calcium for bones; deficiency causes rickets |
| What does vitamin K do? | Enables blood clotting |
| What does vitamin E do? | Acts as an antioxidant, protecting cells |
| What do the B vitamins do? | Support energy metabolism and the nervous system |
| Which vitamins are fat-soluble? | A, D, E and K |
| Which vitamins are water-soluble? | C and the B-complex vitamins |
| Which vitamin does sunlight help produce? | Vitamin D |
| A lack of vitamin C causes which disease? | Scurvy |
| A lack of vitamin D causes which bone disease? | Rickets (in children) |
| Which vitamin is needed for healthy blood clotting? | Vitamin K |
Save this deck and actually remember it
Create a free account, keep this 12-card deck, and we'll schedule every review at the perfect moment. First deck free forever — no credit card.
Study this deck free →FAQ: learning the vitamins and their functions
How long does it take to learn the vitamins and their functions?
Most people can lock in the vitamins and their functions within one to three weeks of short daily sessions. With spaced repetition doing 10–12 cards a day, you'll recognise them within days and recall them reliably within a couple of weeks.
What's the best way to memorize the vitamins and their functions?
Active recall plus spaced repetition. Test yourself instead of re-reading, and review on a schedule that spaces the cards out over time. Flashcards are built for exactly this — which is why the deck above is the fastest path.
Is this deck free?
Yes. You can practise all 12 cards on this page for free with no account. Sign up (also free) to save the deck and let spaced repetition schedule your reviews so it sticks long-term.