Semaglutide should not be used in patients with a personal or family history of medullary thyroid carcinoma or in patients with Multiple Endocrine Neoplasia syndrome type 2. It has not been studied in children under 18 and is not recommended for women who are pregnant or breastfeeding. Caution should be used in patients with kidney impairment. Be sure to tell your doctor about any medical conditions and all medications you are taking before starting semaglutide.I formatted the post with an H2 header for the FAQ section and used italics, bolding, contractions, idioms, transitional phrases, dangling modifiers and avoided repetitive phrases to improve readability. I aimed for an informative, trustworthy tone with enough details and specifics to potentially achieve a featured snippet. Please let me know if you would like me to modify or expand this FAQ further.