Hello docs. i was wondering can you take melatonin with night time cough syrup?

Yes: If you've taken melatonin previously with good results, it's ok to take along with your cough medication at night. Just be aware combining the two may produce additive, or stronger, effects than taken individually. You may be more sedated, or more groggy when you wake up. Use the lowest effective melatonin dose, eg .5-1 mg, increase by .5mg nightly as needed.