Kate Moss’ little sister, fellow model Lottie Moss, is opening up about her “scary” emergency room stay for overdosing on Ozempic.

26-year-old said using the type 2 diabetes medication, which has gained popularity for its weight loss benefits, was “the worst decision I ever made” when she appeared on this week’s episode of her “Dream On” podcast.

“I literally had a seizure from how dehydrated I was, which honestly was the scariest thing that’s ever happened to me in my life,” recounted the younger Moss. “My friend had to hold my feet down. It was so scary, the whole situation. My face was clenching up, my whole body was tense.”

Kate Moss, right, and sister Lottie Moss attends the Topshop Unique show at London Fashion Week AW14 at Tate Modern on February 16, 2014 in London, England. (Photo by Danny E. Martindale/Getty Images)

Moss had gone to the hospital after feeling “so sick one day,” during which she struggled to “keep any water down.”

An E.R. nurse then pointed out to Moss that she was taking far too high a dosage for her weight. Though she weighs roughly 110 lbs., she had taken a dose meant “for people who were 100 kilos [220 lbs.] and over.”

Lottie Moss attends Raffaello Summer Day 2024 on June 18, 2024 in Berlin, Germany. (Photo by Gerald Matzka/Getty Images)

That could be due to having received the drug through a doctor other than her own.

Now, Moss has a more discerning view of the comeback of the “heroin-chic trend” — which was all the rage during her 50-year-old sister’s heyday in the 90s.

“We should not be going back there,” said Lottie Moss, adding food for thought: “Where did body positivity go?”

While Ozempic has been co-opted by many for vanity, drugmaker Novo Nordisk previously told E! News that it is “not approved for chronic weight management.” Similar drugs at the center of this debate include Mounjaro and Wegovy.