Look at total THC.
Cannabis packages must identify the total THC and total CBD content. Look at the package’s label for the amount of total THC and total CBD to estimate its strength.
Total THC for dried cannabis is shown as a percentage. This tells you what the possible maximum amount of THC could be when you smoke or vape the cannabis. You’ll see percentages ranging from less than 1% up to approximately 25%. Products with less than 10% THC are considered less risky than those with higher amounts.
THC and CBD content in cannabis oils are shown in mg/ml. These are products for which you place droplets under your tongue or swallow. You’ll see ranges of less than 1 mg/ml up to 30 mg/ml. Products on the lower end of this scale are considered less risky than those containing higher mg/ml.
THC increases risk. The higher the THC, the stronger the cannabis. Risks are greater for new users and those who have not consumed cannabis in a long time.
CBD decreases risk. More CBD in a product can lessen the intoxicating effects of THC.
Average THC levels have been steadily increasing since the 1970s because of changes in the way cannabis is grown. If you haven’t used cannabis for many years, be aware that it is generally much stronger than in the past.