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Cannabis concentrate, also called marijuana concentrate, marijuana extract, or cannabis extract, is a tetrahydrocannabinol (THC) and/or cannabidiol (CBD) concentrated mass. Cannabis concentrates contain high THC levels that range from 40% to over 90%, [ 1 ] [ 2 ] stronger in THC content than high-grade marijuana, which normally measures around ...
In dogs, the minimum lethal dose of THC is over 3000 mg/kg. [20] According to The Merck Index, [21] the LD 50 of THC (the dose which causes the death of 50% of individuals) is 1270 mg/kg for male rats and 730 mg/kg for female rats from oral consumption in sesame oil, and 42 mg/kg for rats from inhalation. [22]
CBD is common in vape products. Conversion of CBD to THC can occur when CBD is heated to temperatures between 250–300 °C, potentially leading to its partial transformation into THC. [89] CBD is one among the most suspected ingredients involved in VAPI. [90] Synthetic cannabinoids are increasingly offered in e-cigarette form as "c-liquid". [91]
In toxicology, the median lethal dose, LD 50 (abbreviation for "lethal dose, 50%"), LC 50 (lethal concentration, 50%) or LCt 50 is a toxic unit that measures the lethal dose of a given substance. [1] The value of LD 50 for a substance is the dose required to kill half the members of a tested population after a specified test duration.
CBD commonly refers to: Cannabidiol, a drug component of cannabis; Central business district, of a city; CBD may also refer to: Biology. Ecology
A 2015 review found that the use of high CBD-to-THC strains of cannabis showed significantly fewer positive symptoms, such as delusions and hallucinations, better cognitive function and both lower risk for developing psychosis, as well as a later age of onset of the illness, compared to cannabis with low CBD-to-THC ratios.
[14] [15] Studies of chronic cannabis users have demonstrated, although inconsistently, a long-lasting effect on the attention span, memory function, and cognitive abilities of moderate-dose, long-term users. Once cannabis use is discontinued for several months, these effects disappear, unless the user started consuming during adolescence.
The related quantities LD 50 /30 or LD 50 /60 are used to refer to a dose that without treatment will be lethal to 50% of the population within (respectively) 30 or 60 days. These measures are used more commonly with radiation , as survival beyond 60 days usually results in recovery.