Is it safe to take 75 mg of trazodone at night (currently using trazodone for 3 weeks as sleep aid), with 200mg/400mg of l-theanine taken morning and afternoon (3 pm), and also ashwagandha extract of 300 to 450 mg morning after food to thanks a lot?

L-theanine has interactions with sedatives in general and you should be cautious using that with the trazodone; ashwagandha can have a mild interaction with benzodiazepines (and thyroid medication) but I have not seen any reports of interactions with other antidepressants (the KSM-66 version has the most consistent studies). Make sure your doctor knows about all supplements you are taking.