I'm no doctor...does it seem there is a contraindication for combining Citalopram and the supplement 5HTP?
Citalopram hydrobromide is a highly selective and potent serotonin (5-hydroxytryptamine 5-HT) reuptake inhibitor with minimal effects on the neuronal reuptake of norepinephrine (NE) and dopamine (DA). The ability of citalopram to potentiate serotonergic activity in the central nervous system via inhibition of the neuronal reuptake of serotonin is thought to be responsible for its antidepressant action. Tolerance to the inhibition of serotonin reuptake is not induced by long term (14 days) treatment of rats with citalopram.
Citalopram has no or very low affinity for a series of receptors including serotonin 5-HT1A, 5-HT2, dopamine D1, and D2, a1-, a2-, b-adrenergic, histamine H1, muscarinic cholinergic, benzodiazepine, gamma aminobutyric acid (GABA) and opioid receptors.
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5-HT1 Agonists
There have been rare postmarketing reports describing patients with weakness, hyperreflexia and incoordination, following the concomitant use of a SSRI and the antimigraine drug sumatriptan, a 5-HT1 agonist. Such interaction should be considered if citalopram is to be used in combination with a 5-HT1 agonist.
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