A potion of longevity was an amber-colored liquid. An examination from outside its sealed vial revealed a number of objects suspended in the liquid: a scorpion's tail, an adder's fang, a dead spider, and a still-beating heart. Upon opening the vial, the suspended objects disappeared.
When a creature drank a potion of longevity, its age was reduced by between 7 and 12 years. The potion could not make an individual return to an age less than 13 years old.
Repeated use of potions of longevity was dangerous, however. After each subsequent use, there was a small but growing risk that the potion might instead increase the drinker's age. After the tenth use, age reduction became impossible and the potion could only make the drinker older.
By 1362 DR Maligor, the Zulkir of Alteration in Thay has been brewing and consuming his own version of the potions of longevity for decades prolonging his life. The liquid of his creation was pale, pearly green and quite viscous. Consuming the potion caused the drinker tremendous pain burning them from the inside. The result was arguably worth it as it made the drinker younger by decades.
- Ed Greenwood, et al (1989). Hall of Heroes. (TSR, Inc), p. 28. ISBN 0-88038-711-4.
- Mike Mearls, Jeremy Crawford, Christopher Perkins, James Wyatt (2014). Dungeon Master's Guide 5th edition. (Wizards of the Coast), p. 188. ISBN 978-0786965622.
- Christopher Perkins, James Haeck, James Introcaso, Adam Lee, Matthew Sernett (September 2018). Waterdeep: Dragon Heist. Edited by Jeremy Crawford. (Wizards of the Coast), p. 165. ISBN 978-0-7869-6625-7.
- Christopher Perkins, James Haeck, James Introcaso, Adam Lee, Matthew Sernett (September 2018). Waterdeep: Dragon Heist. Edited by Jeremy Crawford. (Wizards of the Coast), p. 192. ISBN 978-0-7869-6625-7.
- Walter Roberts (October 1993). “The Living City: The Ravens Bluff Diviner's Guild”. In Jean Rabe ed. Polyhedron #88 (TSR, Inc.), p. 17.