Great question. We generally go with the answer that PhenterPro is not as strong as phentermine. This is because phentermine has a similar effect to amphetamines, and that's why phentermine can be addictive and is a controlled drug.

Some customers have taken the rx before and did not respond well to it, or didn't feel anything at all; yet, they report feeling great energy and appetite suppression with PhenterPro.

Still, as a general rule, I would say for most people, the rx will be stronger for sure. Even so, we still sell a lot of PhenterPro because so many people just don't qualify for the rx for many reasons.

PhenterPro was developed to provide you the benefits of phentermine, without the harsh side effects, while being able to order online without an rx. The only side effects some people experience are mild headache during the first few days, and trouble sleeping during the first few nights. Just make sure you take your second PhenterPro tablet at lunchtime, and you shouldn't have any trouble falling asleep.

To make your purchase decision easy and without worry, your order is protected by our 30-day satisfaction guarantee. We suggest that you purchase the 1 month program and if you aren't happy for any reason, just email us at so we can assist you with your return and refund.