Merely having possession of any will cause most vendors to refuse to do business; dropping it is necessary if wanting access to services. Notable exceptions to this are any vendors who are Khajiit.
Moon Sugar is also used to make the drug Skooma, which is also illegal. There are no respawning sources of Moon Sugar, though several vendors do sell limited supplies. Most commonly, Moon Sugar is smuggled in through caves, and is often used as currency among bandits and thieves.
Moon sugar can be acquired through the following quests:
- Blades Trainers – gifted by Nine-Toes
- Rabinna's Inner Beauty – up to ten units depending on how much is completed
- Balmora, Itan's House
- Lonely Shipwreck
- Sarys Ancestral Tomb
- Uncle Sweetshare's Workshop
- Unexplored Shipwreck
- There are 24 free samples of this ingredient in the game.