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Discover Supplement-Drug Interactions

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Last Updated: 8 months ago

Possible Interaction: Propranolol and Tryptophan

supplement:

Tryptophan

Research Papers that Mention the Interaction

Propranolol (80 mg, PO) failed to attenuate the prolactin response to L-tryptophan infusion (100 mg/kg, IV) in seven volunteers; the role of 5-HT1 receptors in this response remains uncertain.
The growth hormone response to tryptophan was enhanced by propranolol , consistent with previous reports of an inhibitory beta-adrenoceptor influence on GH secretion.
Psychoneuroendocrinology  •  1990  |  View Paper
Propranolol also prevented a 17% elevation in brain tryptophan levels induced by IMI but did not alter the 29% decrease in plasma tryptophan.
Life sciences  •  1988  |  View Paper
The inhibitory action of 10 mM D-glucose, 10 mM L-methionine, and 5 mM L-tryptophan was blocked by propranolol on the jejunum and by phenoxybenzamine on the ileum.
The American journal of physiology  •  1988  |  View Paper