A: Effexor (venlafaxine) is an antidepressant in the class of drugs called selective norepinephrine reuptake inhibitors (SNRIs). SNRIs affect chemicals in the brain that may become unbalanced and cause depression. It is used to treat major depressive disorder, anxiety, and panic disorder.: Weight gain is a possible side effect of Effexor, occurring in at least 1 percent of patients taking the medication. Weight gain is a common side effect of tamoxifen, occurring in up to 9 percent of patients taking the medication.
Common Freshwater Organisms. Mosquito fish. Fish Up to 2 1/2. They live in ditches, ponds, and lakes eating mosquito larvae and other insects. Mosquito fish give birth to live young. Tadpole. Amphibian. 1/8 to 3. Tadpoles are young frogs and toads.
Unicellular organisms are organisms that have 1 cell that make up its body. Bacteria, Amoeba, protozoa, viruses, diatoms are the five different types of unicellular organi â¦ sms. There are conflicts on the number of single celled organisms in the world because all of them have not been discovered yet.