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.
Detox and Withdrawal Duration. Withdrawal is the collection of side effects that occur when a drug is removed from the brain and body of someone who is dependent on it, while detox is the actual removal of the drug itself. Withdrawal from oxycodone usually starts within 8-12 hours of taking the drug, and it peaks in the first 72 hours. Symptoms generally subside in about a week, although some of the psychological effects and drug cravings may persist for longer.