The shortest possible to answer to this question would be yes, Phentermine is more efficient than herbal supplements for losing weight. There is no doubt about this, this is the simple fact. However, the question why these herbal supplements get so much attention and why they are that well sold is a bit more complicated to answer.One of the main reasons for this is this modern view of everything that is natural being better than anything modern science can come up with. It all started sometime in the ‘90s and it has been on the rise ever since.
We have become somewhat apprehensive of the proper medications, and for no reason whatsoever, no reason that can be justified at least. We have become so gullible for products that come from the eastern schools of medicine that we tend to forget one simple fact. And this simple fact is that western medicine is without a shadow of doubt the most advanced in the world right now. There is so much science and so much hard work going into 
This is a tendency and a viewpoint that is absolutely unfounded and that can be dangerous even.The weight loss products are one of the best examples. People nowadays trust more to some companies manufacturing herbal supplements only due to the fact that they are small companies and that they are using exotic and natural ingredients. However, there is absolutely no proof that these medications are efficient at all. This is mainly due to the fact that there is no regulatory agency that tests these natural products and that does clinical trials that are supposed to ascertain the fact whether these products are efficient.
On the other hand, you have FDA approved drugs, such as Phentermine, one of the most efficient weight loss pills on the market, a pill that has passed the FDA’s approval process which is not at all an easy task.To sum it all up, there is absolutely no doubt that Phentermine is more effective for weight loss than any herbal supplement and the only question is whether you are going to succumb to the hype that surrounds herbal supplements and whether you are going to factor in the cold truth and the hard facts.