The basic nutrients of food include arbohydrate, protein, fat, vitaminc s, and. minerals. The body needs to obtain appropriate vitamins from food to maintain. the normal functions of cells and organs, to promote growth and development. and. Any lack or excess amounts of vitamins in the body may have side effects.
In these studies, the most common side effects of Pristiq (when taken at the recommended dose of 50 mg per day) included: 1  Nausea -- in up to 22 percent of people. 2  Dizziness -- up to 13 percent. 3  Dry mouth -- up to 11 percent. 4  Diarrhea -- up to 11 percent.  Increased sweating -- up to 10 percent.
They may also have an effect on other neurotransmitters. Serotonin-Norepinephrine Reuptake inhibitors (SNRIs) include desvenlafaxine (Pristiq), duloxetine (Cymbalta), venlafaxine (Effexor), venlafaxine XR (Effexor XR), milnacipran (Savella), and levomilnacipran (Fetzima). Side effects most common to the class of SNRIs include nausea, dizziness, and sweating. SNRIs, particularly duloxetine, venlafaxine, and desvenlafaxine may cause sexual dysfunction. Other side effects include tiredness, constipation, insomnia, anxiety, headache, and loss of appetite.