Potential Phentermine Side Effects

All medicines may lead to side effects, but then many people do not experience any with Phentermine. You should seek emergency medical help immediately in case you experience any of the symptoms or allergic reactions to the drug: breathing problem, hives, facial swelling, swollen tongue, throat or lips. If you experience any of the following, contact your doctor immediately:

• Shortness of breath, even after mild effort
• Chest pain, as though you will pass out
• Swollen feet or ankles
• Pounding heartbeat or fluttering feeling in the chest
• Irritability, confusion and unusual behavior or thought
• Feeling too happy or too sad
• Extremely high blood pressure with blurry vision, severe headache, anxiety, confusion, buzzing ears, short breath, chest pain, seizures, uneven heartbeat

Some of the less serious side effects of Phentermine comprise:

• Hyper activeness or restlessness
• Dizziness, tremors, headache
• Insomnia or sleep problems
• Dry or unpleasant taste in mouth
• Upset stomach, constipation or diarrhea
• Impotence or varying levels of libido

Drugs that Affect Phentermine

Your doctor needs to be informed about all the other medicines that you use involving:

• Blood pressure medication
• Oral diabetes or insulin medication
• Ismelin or guanethidine
• Antidepressant like Celexa or citalopram, Symbyax, Sarafem, Prozac or fluoxetine, Zoloft or sertraline, Paxil or paroxetine etc

There might even be other drugs interacting with Phentermine, and if that is the case, you need to inform your doctor regarding the different kinds of medications that you use such as over the counter, prescription, herbal products, vitamins and more.

Some of the previously mentioned side effects may occur infrequently, but then they might be potentially serious, in which case, you need to report that immediately to the health care provider. Signs of the life threatening may comprise:

• Fainting or dizziness
• Chest pain
• Weakness or fatigue
• Ankle swelling
• Blue skin or lips
• Breathing problem

The patient may experience wheezing or a problem in swallowing food, other than experiencing hallucinations, strange behavior, tachycardia or rapid heart beat, forcefully or rapidly beating heart and allergic reactions. In case you experience them, stop taking Phentermine and get in touch with your specialist.

While the above list of Phentermine side effects is not a conclusive one, there may be other effects too, in which case, you should consult with your doctor. This is why you need to take the dosage appropriately.

Adult Dosage: 8 mg orally thrice a day half an hour before meals. Phentermine resin and Phentermine hydrochloride may be administered as a single dosage of 15 mg to 37.5 mg once before breakfast or around 10 to 14 hours before going to bed.

Pediatric Dosage: Kids over 12 years are required to take 8 mg orally thrice a day half an hour before meals. Phentermine resin and Phentermine hydrochloride may be administered as a single dosage of 15 mg to 37.5 mg once before breakfast or around 10 to 14 hours before going to bed.