# California health officials warn about gas station supplement linked to overdose

> California health officials warn gas station supplement linked to deadly overdose.
- Title: California health officials warn about gas station supplement…
- Summary: California health officials warn gas station supplement linked to deadly overdose. California health officials warn a gas station supplement containing…
- Keywords: california, health officials, gas station, supplement, overdose, mgm-15, kratom, cat's claw, script botanicals, seattle, news, entertainment
- Source: California Post — https://nypost.com/2026/10/23/us-news/california-officials-sound-alarm-over-cats-claw-supplement-linked-to-overdose
- Published: 2026-10-23T14:18:58+00:00
- Read time: 1 min
- Topics: california, health officials, gas station, supplement, overdose, mgm-15, kratom, cat's claw, script botanicals, seattle, news, entertainment
## California health officials warn
California health officials warn about a gas station supplement linked to a fatal overdose.
## Supplement contains MGM-15
The supplement contains dihydro-7-hydroxymirtragynine (MGM-15), a kratom-derived opioid.
## MGM-15 is 15-50x stronger than morphine
MGM-15 is 15 to 50 times stronger than morphine and is not approved for medical use in humans.
## First fatal overdose in San Francisco
The overdose was the first of its kind in San Francisco after cases in Utah and Washington.
## Dr. Monica Gandhi warns
Dr. Monica Gandhi, a professor of medicine at the University of California, San Francisco, says the package lures consumers into a false sense of security.

> It looks really not dangerous. People buy it, they’ll take it as a supplement and they think it’ll give them energy… but if you take too much of them it can depress your ability to breathe and you can die from it.
## Key takeaway

California health officials warn a gas station supplement containing MGM-15, a kratom-derived opioid, caused a fatal overdose in a 37-year-old man.