TNT Incremental Potions Wiki
The official page says code Release gives free Potions. Potion types, durations, effects, stacking, upgrades and Rebirth use are held until tested.
Status
Potion data gaps
Confirmed: Potions exist as a Release code reward. Held for testing: potion types, effects, duration, stacking and best timing.
Planning links
Use Potions with codes and progression pages
Keep Potion planning tied to the source-checked code page and manual calculator until exact effects are tested.