Side effects of Phentermine

When taking any medication you should consult with a doctor or health care professional to understand and be aware of any potential side effects. When it comes to Phentermine 37.5, keep in mind that some of the side effects may not have been reported. It is a good idea to always consult with a healthcare specialist or a doctor for any medical advice. Phentermine side effects can always be reported to the FDA. The following side effects to be aware of regarding Phentermine apply to the oral tablet and the oral capsule. Additionally, if you experience any of the following side effects, you should consult your doctor as soon as possible.

Potential Phentermine side effects that need immediate medical attention:

If you begin hearing or seeing things that are not really there while on Phentermine, contact your doctor right away. If you experience severe mental changes, decreased ability to exercise, chest pain, fainting, dizziness, or a headache you may be experiencing the side effects of Phentermine use. Trouble breathing, swelling lower legs or feet, difficulty speaking, walking or speaking are all possible side effects.


Feeling weakness, tingling or numbness in the legs or arms, shaking in the feet, arms, hands or legs are also side effects. Phentermine can cause anxiety, dizziness, restlessness, insomnia, euphoria and dysphoria as well. Additionally, if you experience a racing, pounding, irregular pulse or heartbeat, consult a doctor.

Some of the side effects do not require medical attention. Typically, the less serious Phentermine side effects will go away with time as your body gets used to the medication. A doctor or health care professional can advise you about how to reduce or even prevent any side effects. If any of the side effects persist, consult your doctor.

Potential Phentermine side effects that do not require immediate medical attention:

If you experience dry mouth, constipation, diarrhea, unpleasant taste, welts or hives, itching, increased or decreased interest in sexual intercourse, skin rashes or redness of the skin these will go away when your system gets used to the medication. If any of the Phentermine side effects persist or you have any questions or concerns, it is always a good idea to consult your doctor.