Addiction

The most common is addiction to drugs, but the options may vary, such as addiction to a certain feeling (like the effect of adrenaline), or to magic/power. The whumpy part is mostly focused on the withdrawl effects, or any potential accidents while under the substance, i.e.

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TV Shows
Heroes


 * 1x01: Isaac Mendez (Santiago Cabrera) uses drugs in order to get "inspiration" to paint, and he overdoses on this first episode, being found by his girlfriend and Peter.

New Amsterdam


 * Lauren Bloom (Janet Montgomery) has an addiction problem during the first two seasons. At first, it's subtle, until she decides to get help; later, she has to deal with chronic pain without meds.

Rush


 * Ep 7: Will Rush (Tom Ellis) uses many drugs throughout the show, but on this episode, he tries a new one. A "life-changing experience", as the man who convinces him says; the drug is powerful and Rush collapses, revisiting his most traumatic day and "wakes up" full dressed at the shower.

Travelers


 * The host's addiction to heroin had not been considered, when Philip Pearson (Reilly Dolman) took over, so it was way far from the plans when he started feeling the withdrawl effects, and all the other consequences that comes with the constant need. There's a lot of moments on Season 1.