CBD Oil Dosage For Seizures

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Cannabidiol improves frequency and severity of seizures and reduces adverse events in an open-label add-on prospective study Of the 132 patients enrolled, 77% remained in the study at 24 months. Low Dose of CBD Liquid Eases Epilepsy Seizures: Study

Cannabidiol improves frequency and severity of seizures and reduces adverse events in an open-label add-on prospective study

Of the 132 patients enrolled, 77% remained in the study at 24 months.

CBD was associated with sustained reduction in seizure frequency and severity at 24 months.

Addition of CBD resulted in a sustained decrease in the adverse events profile.

Abstract

The objective of this study was to characterize the changes in adverse events, seizure severity, and frequency in response to a pharmaceutical formulation of highly purified cannabidiol (CBD; Epidiolex®) in a large, prospective, single-center, open-label study. We initiated CBD in 72 children and 60 adults with treatment-resistant epilepsy (TRE) at 5 mg/kg/day and titrated it up to a maximum dosage of 50 mg/kg/day. At each visit, we monitored treatment adverse events with the adverse events profile (AEP), seizure severity using the Chalfont Seizure Severity Scale (CSSS), and seizure frequency (SF) using seizure calendars. We analyzed data for the enrollment and visits at 12, 24, and 48 weeks. We recorded AEP, CSSS, and SF at each follow-up visit for the weeks preceding the visit (seizures were averaged over 2-week periods). Of the 139 study participants in this ongoing study, at the time of analysis, 132 had 12-week, 88 had 24-week, and 61 had 48-week data. Study retention was 77% at one year. There were no significant differences between participants who contributed all 4 data points and those who contributed 2 or 3 data points in baseline demographic and AEP/SF/CSSS measures. For all participants, AEP decreased between CBD initiation and the 12-week visit (40.8 vs. 33.2; p < 0.0001) with stable AEP scores thereafter (all p ≥ 0.14). Chalfont Seizure Severity Scale scores were 80.7 at baseline, decreasing to 39.2 at 12 weeks (p < 0.0001) and stable CSSS thereafter (all p ≥ 0.19). Bi-weekly SF decreased from a mean of 144.4 at entry to 52.2 at 12 weeks (p = 0.01) and remained stable thereafter (all p ≥ 0.65). Analyses of the pediatric and adult subgroups revealed similar patterns. Most patients were treated with dosages of CBD between 20 and 30 mg/kg/day. For the first time, this prospective, open-label safety study of CBD in TRE provides evidence for significant improvements in AEP, CSSS, and SF at 12 weeks that are sustained over the 48-week duration of treatment.

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Low Dose of CBD Liquid Eases Epilepsy Seizures: Study

WEDNESDAY, May 16, 2018 (HealthDay News) — Less appears to be more when it comes to treating epilepsy with the marijuana extract cannabidiol, a new clinical trial suggests.

Patients taking a 10-milligram (mg) daily dose of pharmaceutical grade cannabidiol (CBD) experienced nearly as great a reduction in seizures as patients on 20 mg, and with fewer side effects, said lead researcher Dr. Orrin Devinsky. He is director of NYU Langone’s Comprehensive Epilepsy Center in New York City.

This is the third clinical trial to show that the cannabidiol medication Epidiolex is useful in treating two rare forms of epilepsy, Lennox-Gastaut syndrome and Dravet syndrome, Devinsky said.

An advisory panel for the U.S. Food and Drug Administration unanimously recommended in April that Epidiolex be approved for use in the United States. The FDA does not have to follow the recommendations of its advisory panels, but it typically does.

Epidiolex is manufactured by the British firm GW Pharmaceuticals, which funded the latest clinical trial.

“This is a historic moment in medicine,” Devinsky said. “Hopefully, the FDA will approve this medication in their June meeting and cannabidiol will be available for children and adults with these two rare epilepsies.”

Although CBD oil has become a trendy cure-all, treatment of epilepsy is the only use that has garnered significant scientific evidence supporting its usefulness.

This latest study is the first to compare two different doses of Epidiolex head-to-head and against an inactive placebo, Devinsky said.

A total of 225 patients suffering from Lennox-Gastaut syndrome were divided into three groups. Those taking 20 mg of Epidiolex a day had 42 percent fewer seizures, on average, compared with 37 percent fewer seizures in the group taking 10 mg of the drug, and a 17 percent reduction in the placebo group.

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But while the 20-mg dose was slightly more effective, it was not the first choice of parents, Devinsky said.

“When parents were asked to rate how their children did best, they actually had a slight preference for the 10-mg dose without knowing what it was,” he added.

That’s because these kids did not experience as many side effects from the cannabidiol, which can include tiredness, decreased appetite, diarrhea and signs of possible liver damage, Devinsky explained.

“They got the vast majority of the benefits with fewer of the side effects,” he said.

The study also showed that Epidiolex is a safe treatment, with only seven patients dropping out of the trial due to side effects — six from the 20-mg group and one from the 10-mg group.

“Compared to other drugs used to treat epilepsy, I think Epidiolex, which is 99-percent pure cannabidiol, has a better side-effect profile than many of the available drugs,” Devinsky said.

According to Dr. Angel Hernandez, of the Helen DeVos Children’s Hospital in Grand Rapids, Mich., these results prove that pharmaceutical-grade CBD helps suppress seizures and “increases our options to treat many of these patients with very, very difficult-to-control epilepsies.” Hernandez is division chief of neuroscience at the hospital.

“We’re talking about types of epilepsy that are extremely difficult to treat with medication,” he said. “Most of these children and adults do not respond to normal pharmacological treatment.”

No one is exactly sure why CBD has this beneficial effect, both Devinsky and Hernandez said. It appears to work on receptors that alter brain chemistry in a way that reduces the chances of a seizure.

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The doctors noted that these effects were seen in patients taking a highly refined form of CBD produced by a drug maker. It’s not known whether patients in states where medical marijuana is legal would see the same effects in CBD oil produced by small companies with no federal oversight.

It’s also not clear whether CBD would help people with more common forms of epilepsy. Devinsky said small clinical trials have so far found no benefit in people with focal epilepsy, where seizures start on one side of the brain.

“I think we need more studies,” Devinsky said. “It’s not been investigated in generalized epilepsy, and I think we need a larger study in focal epilepsy.”

The findings were published online May 17 in the New England Journal of Medicine.

More information

The Epilepsy Foundation has more about medical marijuana and epilepsy.

SOURCES: Orrin Devinsky, M.D., director, NYU Langone’s Comprehensive Epilepsy Center, New York City; Angel Hernandez, M.D., division chief, neuroscience, Helen DeVos Children’s Hospital, Grand Rapids, Mich.; May 17, 2018, New England Journal of Medicine, online

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