serotonin
4 interactions related to serotonin
fluoxetine + saffron
Saffron (Crocus sativus) has independent antidepressant activity, including serotonergic effects demonstrated in randomized controlled trials, and combining it with fluoxetine can theoretically add to serotonergic tone. Fluoxetine's long half-life extends the window of potential interaction for weeks after the last dose.
niacin + tryptophan
Tryptophan is converted in the liver to niacin (vitamin B3) at a ratio of roughly 60 mg tryptophan to 1 mg niacin, so adequate dietary tryptophan reduces the niacin requirement and helps maintain NAD/NADP coenzyme pools. Niacin in turn spares tryptophan for serotonin and melatonin synthesis, supporting mood and sleep.
nortriptyline + st. john's wort
St. John's wort induces CYP3A4 and CYP2D6, the enzymes responsible for metabolizing nortriptyline, reducing nortriptyline blood levels and antidepressant effect. The herb also adds serotonergic activity that may increase risk of serotonin syndrome.
saffron + curcumin
Saffron (Crocus sativus) and curcumin both have antidepressant effects through complementary mechanisms: saffron modulates serotonin reuptake and increases BDNF, while curcumin reduces neuroinflammation and supports monoamine balance via MAO inhibition and HPA-axis modulation. A randomized placebo-controlled trial in major depressive disorder showed the combination was effective in reducing depressive and anxiolytic symptoms.