701.5  Intoxicants or drugs.
  The fact that a person is under the influence of intoxicants or drugs neither excuses the person’s act nor aggravates the person’s guilt, but may be shown where it is relevant in proving the person’s specific intent or recklessness at the time of the person’s alleged criminal act or in proving any element of the public offense with which the person is charged.
[C79, 81, §701.5]