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Side effectsQuiet Tone Side Effects And Interactions
The Quiet Tone artwork carries a caution block rather than a side-effect list.
What matters comes from the ingredients. St John's wort lowers blood levels of several medicine classes, 5-HTP sits beside it on the same pathway, valerian and hops are sedating, and the zinc row is already a full day before anything else is counted.
Named class by class, because a general warning tells nobody whether it applies to them.
What does the Quiet Tone label say about safety?
One block of text, four separate instructions, quoted once in full.
Do not exceed recommended dose. Pregnant or nursing mothers, children under the age of 18 and individuals with a known medical condition should consult a physician before using this or any dietary supplement. Keep out of reach of children. Do not use if safety seal is damaged or missing.Caution, printed on the bottle
That is the whole of it. No side-effect list appears on the artwork, which is ordinary for a dietary supplement: the category carries a caution block rather than the adverse reactions section a medicine would.
Four instructions are inside it, and each answers a different question. Do not exceed one capsule a day. Three groups are told to speak to a physician first. Keep it away from children. And do not use the bottle if the safety seal has been broken.
Everything below this section comes from the research on the named ingredients rather than from the label, and it is labelled that way throughout.
The Quiet Tone interaction that matters most: St John’s wort
One ingredient, six medicine classes, and why an unsplit blend total makes the question harder rather than easier.
Sixteenth on the blend list, at an amount that shares one total with seventeen other ingredients, and the single most consequential thing about this formula.
St John's wort is a potent inducer of the enzymes and transporters the body uses to clear drugs, chiefly cytochrome P450 3A4 and P-glycoprotein. Inducing them means the body clears the affected medicine faster, so blood levels fall and the medicine works less well. A 2020 review revisiting its clinical relevance is the clearest modern summary, and a review of the clinical risks of co-administration collects the case reports.
| Medicine class | What the literature documents | What it means here |
|---|---|---|
| Hormonal contraceptives | A systematic review documents reduced effectiveness and breakthrough bleeding. | The most common reason to rule this bottle out, and the reason is specific rather than general. |
| Antidepressants, especially SSRIs | Serotonergic effects on top of a serotonergic medicine, and altered clearance of several of them. | Compounded here, because 5-HTP is in the same capsule. See the next section. |
| Immunosuppressants after transplant | Falling ciclosporin and tacrolimus levels are among the best documented interactions in the whole literature. | Not a risk anyone should be asked to size from a blend total. |
| Anticoagulants | Reduced warfarin effect through the same induction pathway. | A changing INR without an obvious cause is the pattern to watch for. |
| Antivirals, including HIV therapy | Reduced plasma levels of protease inhibitors and several other agents. | Named in every interaction review of this plant. |
| Some cancer therapies and seizure medicines | Reduced exposure through induction of the same enzymes. | Worth naming to whoever prescribes them rather than to a website. |
Every row describes what the published reviews document for St John’s wort at studied amounts. The amount in this blend is inside one shared total, which makes the risk impossible to size and therefore impossible to dismiss.
An interaction that could be sized against a printed milligram figure could be discussed sensibly with a prescriber. Sixteenth place inside 415.5 mg cannot. That is the one place on this label where a proprietary blend moves from an annoyance to a safety question.
NCCIH’s own page on St John’s wort is the plainest place to read the interaction list in full.
5-HTP alongside St John’s wort in Quiet Tone
The second serotonergic ingredient, and the conversation it makes necessary.
Eighteenth on the blend list, and the second serotonergic ingredient in the same capsule. 5-hydroxytryptophan is the immediate precursor the body converts into serotonin, reviewed across its physiology and toxicology.
Two serotonergic ingredients together is a combination worth naming, and it is particularly worth naming to anyone already taking an antidepressant, a triptan for migraine, tramadol, or any other medicine that raises serotonin. That is a conversation for a prescriber before the first capsule rather than a reason to self-assess.
The panel also explains why the pair is there. Vitamin B6 at 236% of the Daily Value is the cofactor for the enzyme that converts 5-HTP into serotonin, so the formula is internally coherent. How it works sets out that pathway in detail.
- Take the ingredient list to whoever prescribes for you rather than a summary of it.
- Name both ingredients, because a prescriber asked about “a hearing supplement” has no way to know either is in it.
- Say that neither amount is broken out, because that changes the answer they can give.
- Ask specifically about anything serotonergic you already take, including over-the-counter migraine treatments.
Other Quiet Tone ingredients with effects worth knowing
Six effects that come up in a first month, from the mundane to the ones worth a conversation.
Chinese hawthorn and the heart
Hawthorn has a cardiology literature of its own: a benefit-risk review of the WS 1442 extract and the HERB CHF trial are the two worth reading. Those studies used a leaf-and-flower extract of a different species from the fruit on this panel, but the interaction question belongs to anyone taking heart medication and should be raised by name.
Valerian, hops and next-day grogginess
Both are sedating plants at their studied doses. The combination trial measured next-day cognitive and psychological parameters for exactly this reason. Anyone driving early or operating machinery should find out how a first week feels before assuming it is neutral.
Zinc over months
114% of a day, every day, adds up alongside a multivitamin or a cold remedy. Sustained high zinc intake affects copper status, and a systematic review of zinc-induced blood toxicities collects what happens at the far end of that. Totalling the sources is a five-second job worth doing once.
Riboflavin and bright yellow urine
462% of a day of riboflavin colours urine a vivid yellow within hours. It is harmless, it is the most common surprise in the first week of any B complex, and it is worth knowing in advance so it is not mistaken for something else.
Biotin and blood tests
150 mcg is a modest amount, and biotin at higher intakes is known to interfere with certain laboratory immunoassays, including some thyroid and cardiac tests. Mentioning the supplement to whoever draws blood costs nothing.
The empty-stomach twenty minutes
The label asks for the capsule twenty to thirty minutes before a meal. Some people find that uncomfortable, and it is the commonest reason a before-meal capsule is abandoned in week one. Moving it to a different meal is the first thing to try.
What to do if something changes after starting Quiet Tone
Five steps in the order they are worth taking.
Stop the capsule first, not last
A single daily capsule is easy to stop and easy to restart. Stopping removes twenty-seven variables at once, which is the fastest way to find out whether it was involved at all.
Write down when it started
Day three feels different from day thirty when somebody asks. A date beats a recollection, and it is the first thing a prescriber will want.
Take the ingredient list with you
Not the bottle name. Twenty-seven actives including St John’s wort and 5-HTP is information; a brand name is not. The panel page prints the whole list.
Call the order desk about the bottle
+1 (302) 200-3480 handles tracking and refunds. It is not a clinical service and it cannot advise on a medicine, but a bottle that arrived with a broken seal or a wrong label is exactly what it is there for.
Use the window
The 180-day guarantee runs from the date of purchase and applies whether the bottles are opened or not. The refund policy sets out the five steps.
The limits of what is known about Quiet Tone safety
What is documented, what is absent, and one source that could not be reached.
This is the quarantine section, and it is where the uncomfortable sentences are collected rather than sprinkled through the rest of the page.
No trial of this finished capsule has been run, for any outcome, including safety. Everything above is drawn from research on individual ingredients at stated doses, and every row says so.
The amounts of seventeen of the eighteen blend ingredients cannot be worked out from the label, because 415.5 mg is a single shared figure. For most of them that is a question of efficacy. For St John's wort and 5-HTP it is a question of safety, and those two are the reason this page exists in the shape it does.
Tolerable upper intake levels for zinc, B6 and niacin are published by the National Institutes of Health. Their pages answered this desk's scripted requests with an HTTP 403 block, so no upper level is quoted here rather than quoting a figure that could not be confirmed on the day. The label amount and the percentage the panel prints are what this website states for each of those three rows.
What this page can stand behind
- The caution block, quoted once in full from the artwork.
- Interaction reviews for St John’s wort, from three separate papers.
- A toxicology review for 5-HTP.
- A review of zinc-induced blood toxicities.
- Cardiology literature for hawthorn, including a benefit-risk assessment.
- Next-day measurements from the valerian and hops trial.
What nobody can tell you from this label
- No trial of the finished formula, for efficacy or for safety.
- No individual amount for any of the eighteen blend ingredients.
- No extraction ratio or standardisation marker on any botanical row.
- No upper intake level quoted, because the source could not be reached on the day.
- No allergen statement on the artwork beyond the ingredient declaration itself.
- No pregnancy or breastfeeding data for most of the blend, which is why the label excludes both groups outright.
Quiet Tone safety questions
Does Quiet Tone have side effects?
The artwork carries a caution block rather than a side-effect list, which is the norm for a dietary supplement. The effects worth knowing come from the ingredients: St John’s wort interactions, two serotonergic ingredients together, sedating plants, and a full day of zinc.
What is the most serious interaction?
St John’s wort. It lowers blood levels of hormonal contraceptives, transplant medicines, anticoagulants, antivirals, some cancer therapies and several seizure medicines. Because the amount sits inside a shared blend total, the risk cannot be sized.
Can it be taken with an antidepressant?
That is a question for the prescriber before ordering, and the reason is specific: the blend carries both St John’s wort and 5-HTP, two serotonergic ingredients, in one daily capsule.
Why has my urine turned bright yellow?
Riboflavin at 462% of a Daily Value. It is harmless, it appears within hours of the first capsule, and it is the most common surprise in a first week on any B complex.
Will it make me drowsy?
Valerian and hops are sedating plants at their studied doses and both are in the blend. How much of either is here is not broken out, so the sensible approach is to find out how a first week feels before an early drive.
Is it safe during pregnancy?
The label excludes pregnant and nursing mothers directly in its caution block, and most of the blend has no pregnancy safety data behind it. That is the bottle’s own limit rather than this desk’s.
Does it interact with the contraceptive pill?
Yes. A systematic review documents reduced contraceptive effectiveness and breakthrough bleeding with St John’s wort, which is one of the eighteen blend ingredients.
What should I do if I feel different after starting it?
Stop the capsule, write down the date it started, and take the ingredient list rather than the brand name to whoever prescribes for you. The 180-day window covers the purchase either way.
Sources for the Quiet Tone safety page
Ten sources, every one of them about a named ingredient at a stated amount.
- Nicolussi S, Drewe J, Butterweck V, et al. Clinical relevance of St. John's wort drug interactions revisited. Br J Pharmacol. 2020;177(6):1212-1226. PMID 31742659. https://pubmed.ncbi.nlm.nih.gov/31742659/
- Soleymani S, Bahramsoltani R, Rahimi R, et al. Clinical risks of St John's Wort (Hypericum perforatum) co-administration. Expert Opin Drug Metab Toxicol. 2017;13(10):1047-1062. PMID 28885074. https://pubmed.ncbi.nlm.nih.gov/28885074/
- Berry-Bibee EN, Kim MJ, Tepper NK, et al. Co-administration of St. John's wort and hormonal contraceptives: a systematic review. Contraception. 2016;94(6):668-677. PMID 27444983. https://pubmed.ncbi.nlm.nih.gov/27444983/
- St. John's Wort. National Center for Complementary and Integrative Health, National Institutes of Health. https://www.nccih.nih.gov/health/st-johns-wort
- Maffei ME. 5-Hydroxytryptophan (5-HTP): Natural Occurrence, Analysis, Biosynthesis, Biotechnology, Physiology and Toxicology. Int J Mol Sci. 2020;22(1). PMID 33375373. https://pubmed.ncbi.nlm.nih.gov/33375373/
- Holubarsch CJF, Colucci WS, Eha J. Benefit-Risk Assessment of Crataegus Extract WS 1442: An Evidence-Based Review. Am J Cardiovasc Drugs. 2018;18(1):25-36. PMID 29080984. https://pubmed.ncbi.nlm.nih.gov/29080984/
- Zick SM, Vautaw BM, Gillespie B, et al. Hawthorn Extract Randomized Blinded Chronic Heart Failure (HERB CHF) trial. Eur J Heart Fail. 2009;11(10):990-9. PMID 19789403. https://pubmed.ncbi.nlm.nih.gov/19789403/
- Schicktanz N, Gerhards C, Schlitt T, et al. Effects of a Valerian-Hops Extract Combination (Ze 91019) on Sleep Duration and Daytime Cognitive and Psychological Parameters in Occasional Insomnia: A Randomized Controlled Feasibility Trial. Brain Behav. 2025;15(6):e70600. PMID 40462685. https://pubmed.ncbi.nlm.nih.gov/40462685/
- Valerian. National Center for Complementary and Integrative Health, National Institutes of Health. https://www.nccih.nih.gov/health/valerian
- Dutta A, Chaudhary V, Kumari S, et al. Zinc-Induced Hematologic Toxicities: A Systematic Review of Descriptive Studies. Biol Trace Elem Res. 2026;204(9):6628-6642. PMID 42087025. https://pubmed.ncbi.nlm.nih.gov/42087025/
Order Quiet Tone once the interactions are cleared
One capsule a day, 30 to a bottle, and 180 days from purchase if the answer turns out to be no.
Two bottles $158 · six bottles $294 · 180-day money-back guarantee
Order Quiet Tone On The Official WebsiteOne capsule a day · 30 per bottle · lot QUI-26/GO-5005