Here are all the supplements I have used or continue to use for a long time. As someone who has been training athletics for many years, these supplements have proven to be the best so far.
Great for maintaining energy throughout the day and training.
Rhodiolin - Calivita
excellent for hydration before the race and during the training itself
Hydrostar prašak za pripremu napitka za rehidraciju, 12 kesica
The only caffeine I've tried that has an effect without making me feel a drop in energy afterwards. It's great that it comes in three different strengths, so you can choose the strength depending on your needs.