In swallowing, one portion is volunatary and one part is involuntary. â¢ Buccal phase o Voluntary contraction of the tongue o Step 1 in figure â¢ Pharyngeal-esophageal phase o Involuntary o Control center in the medulla and lower pon o Step 2-5 in figure.
Considerations. Serotonin is a mood regulator that occurs naturally in the body. When serotonin levels are chemically altered, as they are with the use of diet supplements such as Phentermine, a chemical imbalance occurs that may lead to feelings of anxiety or depression.
More serious side effects of Adipex use, either short-term or long-term, include but are not limited to: 1  shortness of breath. 2  heart palpitations. 3  swelling in the ankles or lower legs. 4  tremors or shakiness. 5  increased blood pressure. 6  insomnia.