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Phentermine Side Effects

What is dry mouth (xerostomia)?

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Dry mouth, medically referred to as xerostomia, is the most common phentermine side effect, as reported by 73% of over 1,200 forum users in this poll of phentermine side effects. Weight loss medications like phentermine, particularly those with stimulant components that are structurally similar to amphetamine, promote this feeling of dryness in the mouth as an unfortunate side effect of the weight-loss boosting effects. While some people may find this side effect slightly uncomfortable, others report more extreme symptoms, including soreness of the tongue and throat, mouth ulcers or stomatitis, and sore gums.