Paxil can cause significant weight loss in some patients. However, clinical research on Paxil demonstrates that, on average, patients lose about 1 lb. compared to smaller changes in weight in patients taking placebo. Learn about Prozac (Fluoxetine Hcl) may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related medications. Fluoxetine (Prozac) is an oral drug mainly used to treat depression and other mental health problems. Learn about side effects, warnings, dosage, and more. A: According to the literature available for Prozac (fluoxetine), changes in weight were a reported side effect. The studies have shown that various types of dermatologic side effects were reported. For the Consumer. Applies to fluoxetine: oral capsule, oral capsule delayed release, oral solution, oral syrup, oral tablet. Along with its needed effects, fluoxetine may cause some unwanted effects. Find a comprehensive guide to possible side effects including common and rare side effects when taking Prozac (Fluoxetine Hcl) for healthcare professionals and consumers. Defines the medication fluoxetine (Prozac, Sarafem, Prozac Weekly) a drug used in the treatment of depression, obsessive-compulsive disorders, panic attacks, and premenstrual dysphoric disorder. Article includes descriptions, uses, drug interactions, and side effects. Fluoxetine is used to treat depression or obsessive-compulsive disorder in adults. Learn about side effects, interactions and indications. Loss of appetite is a common side effect of fluoxetine. MayoClinic.com explains that appetite-related complications of fluoxetine are not medically urgent but should be reported to a physician if loss of appetite becomes severe or troublesome. Lexapro (escitalopram) is a prescription drug used to treat depression and generalized anxiety disorder. Side effects may include taste alterations, shaking, fever, and headache. Drug interactions, dosage, and pregnancy and breastfeeding safety information are provided.