This claim is incredibly true as to sources I have reviewed online. After looking at an article from The New York Times, it is clear that in the short answer -- yes, alcohol does cause panic attacks. The definition of panic attack according to Mayo Clinic, "is a sudden episode of intense fear that triggers severe physical reactions when there is no real danger or apparent cause." In the article by NYT, alcohol and anxiety are considered, "two sides of the same coin," says Dr. Alëna Balasanova, an associate professor of psychiatry and the director of addiction psychiatry education at the University of Nebraska Medical Center. The NYT article goes on to state that although alcohol can be used as a way to relax after a long day, even the smallest amounts can create feelings of anxiety for the person drinking. The risk is always there, and it's even higher if you already have an existing anxiety disorder. The article also explained that when you drink alcohol, your brain ramps up the release of a chemical called gamma-aminobutyric acid, or GABA which helps us feel calm. However it also releases glutamate, a neurotransmitter, which is associated with anxiety and stress. These disruptions in the brain can lead to stress, confusion, and panic attacks. If you drink alcohol more excessively, your brain releases less and less GABA, meaning that the glutamate takes over and makes the brain become "hyper excitable," which can lead to symptoms like panic attacks. Alcohol can also lead to other factors like dehydration or lack of sleep, which could lead to someone feeling more anxious than usual. Using alcohol to unwind and relax actually may cause more anxiety and stress in the long run.
https://www.nytimes.com/2025/02/04/well/mind/alcohol-panic-attack.html
https://www.mayoclinic.org/diseases-conditions/panic-attacks/symptoms-causes/syc-20376021