(1) Except as otherwise provided in this section, a claim under this chapter may not be brought more than two years after the cause of action accrues. A cause of action accrues under this chapter when a person who may recover has reason to know of the harm from illegal drug use that is the basis for the cause of action and has reason to know that the illegal drug use is the cause of the harm.

(2) (a) For a plaintiff, the statute of limitations under this section is tolled while the individual potential plaintiff is incapacitated by the use of an illegal drug to the extent that the individual cannot reasonably be expected to seek recovery under this chapter or as otherwise provided by law. (b) For a defendant, the statute of limitations under this section is tolled until six months after the individual potential defendant is convicted of a criminal drug offense or as otherwise provided by law.

(a) For a plaintiff, the statute of limitations under this section is tolled while the individual potential plaintiff is incapacitated by the use of an illegal drug to the extent that the individual cannot reasonably be expected to seek recovery under this chapter or as otherwise provided by law.

(b) For a defendant, the statute of limitations under this section is tolled until six months after the individual potential defendant is convicted of a criminal drug offense or as otherwise provided by law.

(3) The statute of limitations under this chapter for a claim based on participation in the illegal drug market that occurred prior to the effective date of this chapter does not begin to run until the effective date of this chapter.