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Weight loss is not a commonly reported side effect of Advil (ibuprofen), and it is not explicitly listed as a frequent side effect in the drug's prescribing information [1]. Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) primarily used to treat pain, fever, and inflammation [1].

Although some anecdotal reports may exist, it is essential to understand that individual experiences can vary, and weight loss as a side effect of Advil is not a well-documented or common occurrence [2]. If you or someone else is experiencing unexplained weight loss while taking Advil, it is crucial to consult a healthcare professional for further evaluation [2].

It is important to note that weight loss should not be considered an expected or typical side effect of Advil, and any concerns regarding the drug's side effects should be discussed with a healthcare provider [1, 2].

Sources:

[1] U.S. Food and Drug Administration. (n.d.). Advil. Retrieved from https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/advil-ibuprofen

[2] DrugPatentWatch. (2021). Advil Side Effects Lawsuit & Settlements. Retrieved from https://www.drugpatentwatch.com/ibuprofen-side-effects-lawsuit/