5 doctors weighed in:
What kind of substances should I avoid while I am taking phentermine?
5 doctors weighed in

Dr. Chuck Shaffer
Bariatrics
2 doctors agree
In brief: See below
Phentermine is used together with diet and exercise to treat obesity (overweight) in people with risk factors such as high blood pressure, high cholesterol, or diabetes.
Do not use Phentermine if you are pregnant or breast-feeding a baby. You should not take Phentermine if you have a history of heart disease, severe or uncontrolled high blood pressure and maoinhibitors discuss with your doctor.

In brief: See below
Phentermine is used together with diet and exercise to treat obesity (overweight) in people with risk factors such as high blood pressure, high cholesterol, or diabetes.
Do not use Phentermine if you are pregnant or breast-feeding a baby. You should not take Phentermine if you have a history of heart disease, severe or uncontrolled high blood pressure and maoinhibitors discuss with your doctor.
Dr. Chuck Shaffer
Dr. Chuck Shaffer
Thank
Dr. Ray Holt
Family Medicine
1 doctor agrees
In brief: Any other stimulants
Anything that stimulates your nervous system on top of what Phentermine already does can be dangerous.
Avoid caffeine, attention deficit drugs, street drugs etc.

In brief: Any other stimulants
Anything that stimulates your nervous system on top of what Phentermine already does can be dangerous.
Avoid caffeine, attention deficit drugs, street drugs etc.
Dr. Ray Holt
Dr. Ray Holt
Thank
Get help from a real doctor now
Dr. Keegan Duchicela
Board Certified, Family Medicine
10 years in practice
16M people helped
Continue
107,000 doctors available
Read more answers from doctors