The lineage of this strain is unknown. The seed was found by Chemdog in a bag at a Grateful Dead concert in 1991. In 2001, he and his wife planted 3 seeds, labeled C, D, and E and Chemdawg D was the keeper. Other great strains came from those seeds including; Chem '91, Chem's Sis, and Chem 4. Good for neck and back pain, appetite loss, nausea, stress, glaucoma, arthritis, and muscle spasms.