Drug & supplement interaction

Skullcap + Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride

Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride brand name: Azstarys.

No Known Interaction

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated July 2026 · Pair last verified Sep 20, 2026

The bottom line No known interaction

We found no known interaction between Skullcap and Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Skullcap and Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride and Skullcap in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Skullcap safety at a glance

Skullcap overall Use caution Often used short-term, but evidence is limited and product quality varies, so use with care.

Pregnancy Avoid Not enough safety data, so it is best avoided during pregnancy.

Breastfeeding Avoid Safety is unknown, so avoid while breastfeeding.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride and Skullcap? Ask Dr. Brian Staiger, PharmD, BCPS directly ›

How we checked

Why No Interaction Is Listed for Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride

Interactions in our licensed database are recorded against drug classes, not just single drug names. Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride is filed under 6 classifications — including qt interval-prolonging drugs, stimulant drugs, serotonergic drugs. Skullcap has documented interactions with 1 drug class — the most serious being cns depressants (moderate) — and none of Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Skullcap Does Interact With Other Medications

Skullcap has 248 moderate known drug interactions in our database — Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride isn’t one of them. If you take anything else, check it against the full list below.

Moderate 248 No known interaction 2,582 (incl. Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride)

Taking anything else?

Check Another of Your Medications Against Skullcap

Covers the 2,830 medications we’ve checked against Skullcap. Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests Skullcap and Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride May Share a Side Effect

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do.

Drowsiness Additional detail
Skullcap
“A single skullcap extract dose of 100 mg does not seem to have adverse CNS effects. However, a higher dose of 200 mg might cause sedation and cognitive impairment. One patient taking skullcap 350 mg three times daily for 2 weeks reported vivid dreams. It is unclear if this event was associated with skullcap.”

Skullcap · Natural Medicines adverse-effect record, reported in cognitive impairment.
2 sources cited

12216. Wolfson P, Hoffmann DL. An investigation into the efficacy of Scutellaria lateriflora in healthy volunteers. Altern Ther Health Med 2003;9:74-8.

91690. Brock C, Whitehouse J, Tewfik I, Towell T. American skullcap (Scutellaria lateriflora): a randomised, double-blind placebo-controlled crossover study of its effects on mood in healthy volunteers. Phytother Res 2014;28(5):692-8.
Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride

Listed in the ADVERSE REACTIONS section of the FDA label for Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride. Read the label on DailyMed ›

Reported for Skullcap but not commonly for Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride: memory problems and vivid dreams or nightmares.

Effects for Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride come from the ADVERSE REACTIONS section of its FDA label; effects for Skullcap come from the Natural Medicines adverse-effect record, quoted above. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

From our Q&A

Questions About Skullcap or Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Skullcap or Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride

This page covers Skullcap only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride page lists 92 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), Arsenic (major), Cesium (major) and Ephedra (major).

By severity: 10 major · 68 moderate · 14 minor.

From our pharmacist’s overview on the Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride page

“Ephedra tops my concerns for anyone taking Azstarys (serdexmethylphenidate and dexmethylphenidate), a stimulant medication for ADHD. It stacks a second stimulant onto the drug and carries a major rating for disturbing heart rhythm.”

Reviewed by 2 · Jul 18, 2026

Open the Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride interaction page

One more smart check

Taking Skullcap as Part of a Dietary Supplement Product? Check It for Interactions

We hold 926 real supplement products containing Skullcap, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Skullcap. Even though Skullcap itself has no known interaction with Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Skullcap and Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Skullcap

Top 25%

#191 of 1,452 supplements looked up here in the last 7 days

29 days ago today

Medication Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride

Steady interest

#2,211 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?

Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Skullcap reference on this page ↓
Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Skullcap and Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride records this page draws on were last updated July 10, 2026.
What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.

Data structure & sourcing designed and verified by Dr. Brian Staiger, PharmD, BCPS.

Supplement

About Skullcap

What is Skullcap?

Anxiety and stress
Trouble sleeping
Nervous tension
Muscle spasms
General relaxation

American skullcap is an herb traditionally used to calm anxiety and promote relaxation, but solid human evidence is very limited. It is generally considered relatively safe for short-term use in healthy adults, though it should be avoided in pregnancy and breastfeeding and used cautiously because of possible liver concerns and product mislabeling.

Scutellaria lateriflora · Lamiaceae · Above-ground parts (leaves, stems, and flowers) · Tea, capsules, tinctures, liquid extracts, dried herb

An interaction check asks whether these two react with each other — it does not ask whether Skullcap is a good idea for someone in your situation. Here is what our Skullcap record says about it on its own.

Skullcap: dosing

There is no official, standardized dose for American skullcap. The right amount can vary depending on the product and the form (tea, capsule, or tincture).The safest approach is to follow the directions on the product label and not take more than recommended.

From our Skullcap monograph — the full record covers uses, side effects and every documented interaction.

Read the full Skullcap monograph & all interactions

Medication

About Serdexmethylphenidate and Dexmethylphenidate

What Is Serdexmethylphenidate and Dexmethylphenidate Used For?

Brand name: Azstarys

Azstarys (serdexmethylphenidate/dexmethylphenidate) is approved to treat Attention Deficit Hyperactivity Disorder (ADHD) in patients 6 years of age and older. It is not recommended for children younger than 6 because they experience higher drug levels in the blood and more side effects at the same doses used in older patients.

See full Serdexmethylphenidate and Dexmethylphenidate drug information

Keep checking

Other Drugs & Skullcap

Browse every other medication we’ve checked against Skullcap — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major

248Moderate

0Minor

2,581No known interaction

248 Moderate 2,581 No interaction

Moderate

248 interactions

Showing 60 of 248 moderate interactions — see all 248 on the Skullcap page.

No interaction 2,581 drugs checked — show the list

We also checked Skullcap against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,581 medications checked with no known interaction — see the full Skullcap list.

See the full Skullcap interactions page

See every supplement checked against Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride, ranked by severity

Evidence & sources

Skullcap References

The 3 references that drive our Skullcap monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

Wolfson P, Hoffmann DL. An investigation into the efficacy of Scutellaria lateriflora in healthy volunteers. Altern Ther Health Med 2003;9:74-8.
Awad, R., Arnason, J. T., Trudeau, V., Bergeron, C., Budzinski, J. W., Foster, B. C., and Merali, Z. Phytochemical and biological analysis of skullcap (Scutellaria lateriflora L.): a medicinal plant with anxiolytic properties. Phytomedicine. 2003;10(8):6 PubMed
Brock C, Whitehouse J, Tewfik I, Towell T. American skullcap (Scutellaria lateriflora): a randomised, double-blind placebo-controlled crossover study of its effects on mood in healthy volunteers. Phytother Res 2014;28(5):692-8.

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Skullcap and Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride Together: Common Questions

Is it safe to take Skullcap with Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride?

We do not list a known interaction between Skullcap and Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.

Do Skullcap and Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride have any of the same side effects?

Yes — our sources link each of them separately to one of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.

How was the Skullcap and Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride combination checked?

Interactions in our licensed database are recorded against drug classes. Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride is filed under 6 classifications, and Skullcap has documented interactions with 1 drug class — none of Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.

Does Skullcap interact with any other medications?

Yes. Skullcap has 248 documented drug interactions in our database — Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.

Does Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride interact with any supplements?

Yes. Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride has documented interactions with 92 supplements in our database — Skullcap is not one of them. The Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Where next

Keep Exploring

Skullcap monograph Uses, safety profile, and every drug interaction in one place Serdexmethylphenidate and Dexmethylphenidate drug information The full plain-English guide to this medication Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride supplement interactions Every supplement checked against Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 3 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Serdexmethylphenidate Chloride, Dexmethylphenidate Hydrochloride and Skullcap?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.