Almost all drugs can cause flashbacks depending on the tolerance of the user, but Lysergic Acid (LSD) is the most commonly known flashback induced drug, some flashbacks occurring up to 3 years after the last dosage, but continued use prior to that period would be needed to induce such a flashback. The occasional use is unlikely to cause a further 'trip' later in life.
LSD and possibly shrooms.
Cause
Acid flashbacks are one of the long-term effects of LSD use, and can interfere with a person’s daily life even months or years after they use LSD. Scientists still know little about what causes them or how to treat them. Keep reading for more on acid flashbacks.
Which drugs cause double vision
Any drug or situation that bears enough resemblance to past LSD experiences can trigger flashbacks. A song can do that as well. It is a misconception that this would happen spontaneously. It is also not true that LSD flashbacks or flashbacks in general are horrible experiences by definition. It is nothing more or less than an extremely vivid remembrance of a past experience, so vivid that it were almost as if you were back there.
drugs that cause harm.
they all cause cancer but not the good drugs like Advil
for the illegal drugs: the withdrawal of opioids such as morphine is known to cause mydriasis.
Drugs can also cause leukocytosis. Cortisone-like drugs (prednisone), lithium, and NSAIDs are the most common offenders.
These drugs include amphetamines, antidepressant drugs, antipsychotic drugs, caffeine , and lithium.
The duration of Flashbacks of a Fool is 1.9 hours.
Of course you can. Do you mean will using drugs cause you to have cancer? Some drugs probably can.