What makes us feel butterflies in our stomachs? Is it true that we love with our brain and not the heart? Chemists are in agreement: on the list of natural boosters, there are serotonin, phenylethylamine, oxytocin, dopamine, testosterone, and oestrogen, which control our neurotransmitters. Prof. Robert Musioł, from the Institute of Chemistry, has invited us to his lab in order to search for the elixir of love.