Some of the drugs may have side-effects. It is recommended you research drugs further online and/or with your doctor or general practitioner before using them.
Additionally, the placebo effect has a major effect on dreaming. If you believe that dream characters act dull and lifelessly, they are far more likely to do so. If you believe they can be creative, original, and surprising, they are far more likely to be. Much of the content of your dreams is affected by the placebo effect. Remember that the easier you think it is to dream lucidly, the easier it will be.