Based on the information provided, it is not recommended to take Ostarine (a supplement used for muscle building) while also taking lithium, Latuda, and Paxil for anxiety. There may be a potential for interaction with these medications, particularly with lithium. It is advised to closely monitor your lithium levels if you decide to take the supplement. It is also important to consider how Ostarine could impact your anxiety symptoms. It may be best to consult with a healthcare professional before incorporating Ostarine into your routine.