Atenolol belongs to a group of beta blockers, that work by blocking the effects of norepinephrine, a stress hormone involved in the fight-or-flight response.
This helps control the physical symptoms of anxiety such as rapid heart rate, a trembling voice, sweating, dizziness, and shaky hands.
It is good to be aware about its possible side effects like anxiety, depression, nightmares, decreased concentration, drowsiness.
This drug is usually used as an alternative to anti-anxiety drugs that have high risk for dependence.
Remember, that drugs can't solve the underlying problem.
The most effective treatment with longer lasting benefits is the cognitive-behavioral therapy.
Best wishes!