Beginning on August 1, 2017, assisted suicide will be a Class C felony, punishable by up to 10 years in prison.  Prior to then, assisted suicide was dealt with under common law.
Text of law.

“Assisted Suicide Ban Act passed with mixed reactions”
(The Anniston Star — June 27, 2017)
The new law was signed by Gov. Kay Ivey in May.  It prohibits health care professionals and others from aiding in the death of a person under certain conditions.  The Assisted Suicide Ban Act says that medical professionals following a patient’s wishes to withhold or withdraw life-sustaining treatment is not punishable by law.  It also states prescribing pain medication or palliative care as an illness runs its course is not punishable by this law and state executions are not punishable.

“Extreme and Outrageous End-of-Life Communication — Beyond the Bounds of Common Decency”
(Medical Futility Blog Spot — February 24, 2017)
The way in which clinicians spoke to 90-year old Elizabeth Monk Wilson and her daughter was cruel and beyond belief, telling them, among other things,
To her daughter, “She has lived her life and needs to let go and die.  Our time and treatments will be wasted on her.  She simply needs to die….We need to get her out of here and quit wasting everybody’s time.”
To Mrs. Wilson, “I know what is best for you….What is wrong with you?  Your life is over. Quite fighting your death.”

Complaint in Alabama Court Case regarding case  surrounding the treatment of Elizabeth Monk Wilson.