Nitrosun is the brand name of a drug called nitrazepam. Spasmoproxyvon contains dextropropoxyphene, which is an opioid (opium-like) medicine. Taking the two together is potentially toxic with additive adverse effects.
Tremors and depersonalisation are known side effects of Nitrosun. I am afraid no herbal juice is going to be of help. In due course, these symptoms will gradually reduce and then disappear. Yoga will be helpful.