NutriStack
Melatonin and Pramipexole, a caution.
Pramipexole can cause daytime sleepiness and sudden sleep episodes, and melatonin can add bedtime sedation and next-day grogginess. The combination is often used in people with Parkinson's disease or restless legs symptoms, but it can make driving, night walking, and fall risk more hazardous. Risk is higher during pramipexole dose increases, with older age, sleep apnea, alcohol, or other sedating medicines.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.
From the interaction database
What the row says.
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At a glance
- Substances
- Melatonin and Pramipexole
- Pair type
- Caution
- Evidence (highest tier)
- Moderate
- Source citations
- 2 sources
- Stack Score effect
- −5 to your Stack Score (per scored caution row).
- Scope
- Supplement × Prescription
- Last verified
- May 30, 2026
Caution · Moderate evidence
Caution
What is happening. Pramipexole can cause daytime sleepiness and sudden sleep episodes, and melatonin can add bedtime sedation and next-day grogginess. The combination is often used in people with Parkinson's disease or restless legs symptoms, but it can make driving, night walking, and fall risk more hazardous. Risk is higher during pramipexole dose increases, with older age, sleep apnea, alcohol, or other sedating medicines.
Mechanism. Pramipexole is a dopamine D2/D3 agonist and is associated with dopaminergic sleepiness. Melatonin activates MT1/MT2 receptors to promote sleep timing and can add pharmacodynamic sedation without a known pharmacokinetic interaction.
Recommendation. Use the lowest effective melatonin dose and take it only at bedtime while on pramipexole. Do not drive or do hazardous tasks if you feel unusually sleepy, and tell your prescriber promptly if you have sudden sleep episodes. Avoid adding alcohol or other sleep aids unless your clinician approves.
Sources (2)
- Micallef J, Rey M, Eusebio A, Audebert C, Rouby F, Jouve E, et al. Antiparkinsonian drug-induced sleepiness: a double-blind placebo-controlled study of L-dopa, bromocriptine and pramipexole in healthy subjects. Br J Clin Pharmacol. 2009;67(3):333-340. PMID 19220275
- Zhang W, Chen XY, Su SW, Jia QZ, Ding T, Zhu ZN. Exogenous melatonin for sleep disorders in neurodegenerative diseases: a meta-analysis of randomized clinical trials. Neurol Sci. 2016;37(1):57-65. PMID 26255301
Stack Score
How this pair moves the number.
Effect on the composite score
If both Melatonin and Pramipexole are in the same stack, this pair applies −5 to your Stack Score (per scored caution row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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