Your symptoms, depression, daytime sleepiness, significant weight gain, and an unexplained urge to smile, are complex and require a formal medical evaluation before starting any medication. These symptoms could point to atypical depression, thyroid issues, a sleep disorder, or a neurological condition. Because prescribing depends entirely on a precise diagnosis, you should not self-medicate. A physician might consider weight-neutral antidepressants like Bupropion or refer you for a sleep study or hormone tests. Please schedule an appointment with a primary care doctor or psychiatrist immediately for a safe, personalised treatment plan.

Yes, chronic daytime sleepiness can indicate a medical issue. While 6 to 6.5 hours of sleep may feel sufficient, most adults require 7 to 9 hours. Your fatigue could stem from sleep deprivation, poor sleep quality (such as sleep apnea), or underlying nutrient deficiencies (like Vitamin D, B12, or Iron). Before trying medications, prioritise sleeping 7-8 hours and maintaining consistent sleep schedules. For supplements, a Vitamin B-complex or Coenzyme Q10 can support natural energy levels, and Melatonin can help regulate sleep. However, please consult a physician for blood tests to rule out thyroid issues or deficiencies before starting any new regimen.