Yes. Remember that the word psychoactive refers to simply affecting the brain. This doesn't mean that psychoactive substances are inherently intoxicating, psychotropic, or hallucinogenic, but they do affect the brain. Both THC and Cannabidiol (CBD) are psychoactive substances, and while CBD doesn't cause a powerful "high," THC can and usually does.
Medical marijuana products can contain up to 10mg of THC per dose. Most users, especially novice users, find 10mg to be a potent enough dose of THC to cause a very powerful high.
Don't attempt to drive, operate any heavy machinery or do anything that could pose safety issues while using marijuana.
Consider taking smaller doses than 10mg if you're a first time user. Many first time cannabis patients find that 5mg or even 2.5mg is more than enough THC to provide relief, while 10mg can induce paranoia or panic attacks.
Therefore, it's always best to start low and go slow, and when taking cannabis orally, wait several hours before trying another dose. Some patients take as long as 6 hours to feel the effects of an oral dose of cannabis, although effects are usually felt within 45 to 90 minutes.