Why the Body Shakes During Anxiety. Shaking is a result of an activated fight or flight system - an evolutionary tool that's meant to keep you safe in times of danger. During intense anxiety, your body is flooded with adrenaline/epinephrine. Adrenaline is pure energy, and your body shakes as a result.
Your doctor may start you on a low dose of oxybutynin and gradually increase your dose. You may notice some improvement in your symptoms within the first two weeks of treatment. However, it may take six to eight weeks to experience the full benefit of oxybutynin. Talk to your doctor if your symptoms do not improve at all within eight weeks.
In order to gauge how long OxyContin remains in the body, it can be helpful to know the length of the estimated detection windows by detection method. On average, OxyContin use can be detected in urine for up to 3-4 four days, in blood up to 24 hours, in saliva 1-4 days, and in a hair follicle up to 90 days.