Studies have shown that the effects of Forskolin supplements will start appearing after 12 weeks. Yes, this may seem like a long time, but it is important to remember that this is a natural supplement. It can take time for the body to adjust to the new supplement and start seeing results. Some people may see results sooner than 12 weeks, while others may not until after the 12-week mark. It is important to be patient and continue taking the supplement as directed to see the best results.