Until recently, most studies on weed and ADHD were about “cannabis use disorder,” the official term for marijuana addiction. A 2013 study found 35 percent of adolescents with ADHD had used substances, mainly alcohol and cannabis, compared to 20 percent of teens without the disorder. But the relationship between ADHD, weed and Adderall is more complex.

For many people with ADD/ADHD, the first course of action is a prescription for an amphetamine (Adderall) or a methylphenidate (Ritalin). Many are diagnosed as kids and put on these strong drugs when they are as young as five years old. In fact, according to the CDC, 10.4% of American children ages five to 17 had an ADHD diagnosis between 2013 and 2015.

For kids who struggle to pay attention, Adderall and other stimulants help them focus and complete tasks, but they also include a host of unpleasant side effects such as anxiety, headaches, nausea, and delayed growth. For students and adults, Adderall is a common way to stay up late and get ahead either at work or school. Prescriptions aren’t very hard to get and the same is true for black market pills. However, apart from side effects, addiction and dependence are also risks.

While weed might not help everyone concentrate, there’s enough anecdotal evidence to suggest that it’s worth trying, especially for people who get ill or don’t feel like themselves on Adderall. Here’s our complete guide.