Light therapy and meds: low risk, but mania and photosensitivity matter

Light therapy interacts surprisingly little with most SAD medications, but there are a few real concerns: risk of mania with bipolar, photosensitivity with some antipsychotics, and timing confusion with melatonin.

Antidepressants (SSRIs, SNRIs) are the most common combo. They don’t directly interact with light therapy in a dangerous way. The theoretical worry is serotonin syndrome—light therapy can boost serotonin indirectly, and SSRIs do too—but in practice it’s extremely rare. If you’re on an MAOI, be more careful, because those already have dietary restrictions. Otherwise, you’re fine.

Antipsychotics are trickier. Some, especially older ones like chlorpromazine and thioridazine, make your skin more sensitive to light. That includes the bright light from a therapy lamp. You won’t get serotonin syndrome, but you might get a sunburn-style reaction on your face. If you’re on those, use a lamp that filters UV, keep