The short answer
Confirm the valerian species before using this root product with protriptyline. Neither the product identity nor a specific additive-sedation interaction is established.
What this answer covers
Radix et Rhizoma Valerianae species unresolved; V. officinalis evidence is conditional on confirmation.
- Supplement or preparation
- Radix et Rhizoma Valerianae
- Medication ingredient
- protriptyline
Identify the root product
Ask the pharmacist to confirm the Latin species, root or rhizome, extract and other ingredients. A generic valerian-root name is not enough to establish Valeriana officinalis.
Apply guidance only if the product matches
NCCIH advises against Valeriana officinalis with sedatives because sleep-inducing effects are possible. That is conditional guidance, not a study of an unknown valerian root.
A timing rule does not resolve missing identity
The evidence does not establish a safe dose gap or quantify extra sleepiness with this exact product. Bring the packaging for review.
Protriptyline has a different profile
The label describes protriptyline as activating and lacking sedative properties. Review any new impairment and the full product list rather than assuming all antidepressants produce additive sedation.
Evidence and practical considerations
Side effects & toxicity
Unidentified root and lack of exact co-use evidence leave the sedation claim insufficient.
- Exact scope
- Radix et Rhizoma Valerianae species unresolved; V. officinalis evidence is conditional on confirmation. with Exact oral protriptyline hydrochloride film-coated tablets. RxNorm IN8886 / PIN203199 hydrochloride tablets. Label describes activating properties and lack of sedative/tranquilizing properties; do not assume other tricyclic sedation applies.
- Medication form and route
- oral
- Timing or duration
- Source-specific single-dose, repeated-dose and observational exposures distinguished.
What remains uncertain
- No exact human co-use trial identified; unidentified species, preparation and dose prevent a blanket conclusion.
Factors that may matter: preparation and plant part; clinical indication; dose; other medicines; baseline alertness.
Read the supporting source summaries
Source 1: current product label
dailymed.nlm.nih.gov · Source check Sep 10, 2026
Population: People prescribed oral protriptyline.
Label describes activating properties and lack of sedative/tranquilizing properties. Cardiovascular, anticholinergic and MAOI precautions; no explicit serotonin syndrome or St John’s wort warning.
How this applies: RxNorm IN8886 / PIN203199 hydrochloride tablets. Label describes activating properties and lack of sedative/tranquilizing properties; do not assume other tricyclic sedation applies.
No universal supplement interval, event rate or preparation equivalence established.
Source 2: official guidance
nccih.nih.gov · Source check Sep 10, 2026
Population: People considering the specified supplement.
Possible but unproven sleep-inducing effect; advises against use with alcohol or sedatives. Mental dullness can occur; long-term safety is uncertain.
How this applies: Preparation-specific original evidence; no untested antidepressant or route transfer.
No protriptyline interaction trial. Chronic use can be followed by withdrawal symptoms when stopped abruptly.
Research assessment: · Open full citations ↗
Review and change history
- Publication status
- Published research summary
- Clinical review
- Not yet recorded
| Date | Update |
|---|---|
| Article prepared | |
| Current exact available claims adjudicated using original captures and explicit identity and comparator limits. | |
| Research summary published |
Article revision: 9a9a8e08e5ed61af
This guide brings together the evidence records used by our interaction checker. Each finding retains its own preparation limits, research date, and source summaries.
Full citations require verification. Reading this answer and the source summaries does not.
Taking other supplements or medications?
Use the checker to explore your other combinations. Ask a pharmacist to review the exact products, amounts and medical conditions in your complete list.
Open the interaction checkerInformation, not medical advice. Do not change prescribed treatment based on this guide.