Kimberly Treadaway hoped she was prepared for the storm. Hurricane Helene was heading right for her home in Weaverville, North Carolina, and she worried about having enough food and water, and about her 5-month-old son. But something else weighed on her — access to Suboxone, a prescription medication she must take daily to reduce the cravings and withdrawal symptoms associated with opioid use. “If I didn’t have my medication, I wouldn’t feel OK,…