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Dr. Andrew Rynne
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Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Breathlessness And Fast Heartbeat While Taking Phentermine?

I have recently started a new diet plan, i take a water pill and B12 vitamin at breakfast, then at 10am i take phentermine, and at 5pm a fat burner and limited to 750 cal a day, i feel like im short of breath high heart rate and i have been keeping a headach with back pain can this diet be the cause of all this
Mon, 2 Jan 2017
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Cardiologist 's  Response
Hello and welcome to ‘Ask A Doctor’ service.

I have reviewed your query and here is my advice.

Phentermine contains a stimulant known as amphetamines. Although it acts as an appetite suppressant by affecting the central nervous system. Amphetamines stimulate or speed up brain functioning, which thereby stimulates the body. Amphetamines are responsible for releasing adrenaline and other stress hormones.

Increased levels of adrenaline can cause palpitations and breathing problem due to tachycardia. They also increase blood pressure therefore you should consult your doctor to stop it or lower the doses as your symptoms are because of amphetamines.

Hope I have answered your query. Let me know if I can assist you further.

Regards,
Dr. Rishu Saxena
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What Causes Breathlessness And Fast Heartbeat While Taking Phentermine?

Hello and welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. Phentermine contains a stimulant known as amphetamines. Although it acts as an appetite suppressant by affecting the central nervous system. Amphetamines stimulate or speed up brain functioning, which thereby stimulates the body. Amphetamines are responsible for releasing adrenaline and other stress hormones. Increased levels of adrenaline can cause palpitations and breathing problem due to tachycardia. They also increase blood pressure therefore you should consult your doctor to stop it or lower the doses as your symptoms are because of amphetamines. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Rishu Saxena