Hi, Welcome to the forum. You should always alert your doctor with all the medications that you had taken in the past or in the present. Anyways, Your symptoms are not suggestive of any side effects of the medicine you have mentioned. Try to quit addictions. Nicotine will give you temporary relief and ruin your health and life later. Get a counselors help to get educated about the disadvantages of smoking. Awareness always helps. The stiffness that you are experiencing is because of improper sleep and lack of rest to your body. You take a lot of stress, get tired, do not sleep well and get back to work. I think it is time for you to manage a short break. Do plan it, you will feel better. Change your bedding and mattress make your bed-room comfortable and pleasing. Eat calcium rich food, reduce your weight, exercise under an expert on a regular basis will give permanent relief. Stiffness can also result due to vertebral disc disorders, consult a doctor and get a radiology done. You can use pain relief sprays to feel better. Hot fomentation can be helpful. Get blood tests done to rule out artheritis, gout or any other bone disease. Have a nice day, take care.