Brief Answer:
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Detailed Answer:
These drugs are caused thermogenics and are used to simulate exercise, increase circulation and blood flow. They can increase the number of calories burned as it increases metabolism.

The over the counter weight loss drugs that speed up metabolism are either illegal or unsafe in most cases. Popular over the counter thermogenic aides have been found to be responsible for both liver and heart failure and may cause dizziness, rapid heart beat, high blood pressure, dehydration

Prescription weight loss medications that speed up the metabolism include Adipex (amphetamine) and ephedrine, neither of which is safe long term and used primarily for short-term weight loss to get the patient on the right track and then it is tapered gradually. These stimulant medications do not help keep weight off long term.

Other thermogenic products include caffeine, ma huang, chili powder, cayenne pepper, turmeric, bitter orange, guarana, kola nut. Green tea helps with weight loss not by thermogenesis as previously thought, but on the teas ability to affect the formation of new fat cells inhibiting the body's ability to form or lay down new fat cells.

Rapid weight loss is almost always caused by water weight loss and will return rapidly when one starts eating normally. Incorporating spicy foods, caffeine containing drinks and exercise are the best thermogenic approaches for your safety.

Please feel free to write back if I have not answered your question.

Respectfully,

Kathy J. Shattler, BS,MS,RDN

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