Supplement × Prescription·Evidence index
PubMed indexes 8 records that name Melatonin and Propranolol together, either in the title or in an interaction, co-administration, or pharmacokinetic context. Each one is listed below with its study design and, where the abstract states one, the authors’ own conclusion, quoted and linked. This page reports that literature. It does not tell you whether to combine them.
Every statement below is attributed to a named, dated, linked source.
This page lists published research relevant to Melatonin and Propranolol. It deliberately does not state whether the combination is safe, whether it interacts, in which direction, at what dose, or how far apart to take them.
Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.
“Propranolol caused a dose-dependent decrease in melatonin levels in both the dark and the light. There was no relationship between suppression of melatonin by propranolol and suppression by light.”
Names both Melatonin and Propranolol in its title.
Names both Melatonin and Propranolol in its title.
“The decrease of melatonin levels was a consequence of the test, since in a control group, the circadian decay of melatonin was significantly less pronounced (P < 0.05). These data suggest an inverse relationship between melatonin and GH after the propranolol + exercise test, and the reduction in melatonin may be related to its depletion by exercise-induced oxidative stress.”
Names both Melatonin and Propranolol in its title.
“Given alone, neither caffeine nor propranolol had any effect on melatonin levels. The results point to an intermediate role for beta-adrenergic receptors in the adenosine-stimulated increase of melatonin production.”
Names both Melatonin and Propranolol in its title.
“The response of melatonin secretion, decreasing after beta-adrenergic agonist treatment and increasing after antagonist treatment, reinforces the hypothesis that in birds the regulation of melatonin synthesis differs from that of the rat. Receptors other than beta receptors may be involved.”
Names both Melatonin and Propranolol in its title.
“No differences in hypothalamic or cortical amine levels were observed between the treatment groups. These results add further support to the suggestion that propranolol is acting at the pineal gland preventing melatonin synthesis and not at a post-pineal central site which would affect melatonin binding and action.”
Names both Melatonin and Propranolol in its title.
“(7 hours after darkness onset) daytime pineal melatonin levels were reached within 15 min after light onset. These findings in a diurnal species, The Eastern chipmunk, differ markedly when compared to previously reported observations on nocturnal laboratory rodents.”
Names both Melatonin and Propranolol in its title.
Names both Melatonin and Propranolol in its title.
Search-based evidence indexes have real limits, and it is worth being explicit about them:
NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers Melatonin, Propranolol, and several hundred other substances.
The checker is a research and organisation tool, not a clinical decision aid, and its per-pair assessments are excluded from search until they pass claim-level review.
NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.
