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Glossary

What is Phentermine?

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Phentermine

Phentermine is a prescription appetite suppressant approved since 1959 for short-term weight loss, and it is a federally controlled substance.

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In plain words

Phentermine is a stimulant related to amphetamine.

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Why it matters

Phentermine is a common low-cost option, but its short-term label and heart effects make it a different choice from GLP-1 medicines.

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Phentermine is a prescription appetite suppressant approved since 1959 for short-term weight loss, and it is a federally controlled substance.

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