Ryetalyn was a mineral that was used to treat Rigelian fever. (TOS episode: "Requiem for Methuselah")
Planets where ryetalyn could be found included Holberg 917G and Cypria III. (TOS episode: "Requiem for Methuselah", TOS novel: Child of Two Worlds)
On occupied Betazed during the Dominion War, ryetalyn was in short supply. (TNG novel: The Battle of Betazed)
| This article is a stub relating to a material or substance. You can help our database by expanding on it.