5-HTP Extract Ingredients & Drug Interactions
by Herbadiet
What is this page for?
First and foremost: checking 5-HTP Extract against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
5-HTP Extract is a dietary supplement by Herbadiet with 1 active ingredient. Its ingredients are commonly taken for low mood or depression, anxiety and stress, sleep problems.Based on those ingredients, 398 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are 5-HTP. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against 5-HTP Extract by Herbadiet
Ask about any prescription or over-the-counter medication and we check it for interactions with 5-HTP Extract by Herbadiet — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of 5-HTP Extract by Herbadiet
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
This product contains one active ingredient: 5-HTP, a compound your body naturally makes from the amino acid tryptophan. It plays a role in producing serotonin, a chemical messenger involved in mood, sleep, and pain regulation.
The capsule shell is made from vegetable cellulose.
Does it work?
Moderate evidence
The evidence for 5-HTP is mixed. For depression, the research suggests it's possibly effective—meaning some data supports benefit, but more study is needed.
For other uses listed—Alzheimer's disease, panic disorder, and cerebellar ataxia (a movement disorder)—there isn't enough reliable evidence to know whether it works. For Down syndrome, the available evidence suggests it's probably not effective.
How safe is it?
Well-documented data
Taken by mouth short-term, 5-HTP is generally well tolerated. The most common side effects are gastrointestinal: nausea, vomiting, abdominal pain, diarrhea, and loss of appetite—often dose-dependent and sometimes improve with continued use.
You may also feel drowsy, dizzy, fatigued, or have headaches or trouble sleeping. Rarely, it can cause aggression, hallucinations, or mania.
There isn't enough safety information to recommend 5-HTP during pregnancy or breastfeeding. Talk with your doctor or pharmacist before using it if you're pregnant, trying to become pregnant, or nursing.
Meds to double-check
Moderate interaction found
Check your exact medications before taking this product if you're on serotonergic drugs (antidepressants, certain pain relievers, migraine medications)—the risk of serotonin syndrome is moderate. Also double-check CNS depressants (sleep aids, sedatives) and carbidopa (Lodosyn).
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
5-HTP may help some people with depression, but it affects serotonin and interacts with many medications—most importantly antidepressants, pain drugs, and migraine treatments. If you take any prescription medication or have a history of mood disorders like mania, check with your pharmacist before starting.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Dec 18, 2021.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about 5-HTP Extract, straight from the product label.
| Brand | Herbadiet |
|---|---|
| Barcode (UPC) | 880896531037 |
| Net contents | 60 V-Cap(s) |
| Market status | On market |
| Date entered into DSLD | Dec 18, 2021 |
| DSLD ID | 257303 |
| Product type | Amino Acid/protein |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Vegan, Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy Free |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for 5-HTP Extract by Herbadiet, sourced from the NIH Dietary Supplement Label Database.
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formulation
When taken as a supplement, your body converts 5-HTP directly into serotonin. These increased levels of serotonin help to remove stress & eases you into a calm and relaxed state
Promotes healthy sleep Enhances mood & overall mental wellness Supports appetite control
Natural color variation may occur in this product
Vcaps Plus
100% natural Neurotransmitter support
Non-GMO
Suitable for vegetarians and vegans
Free Of preservatives, binders, gluten, artificial ingredients, dairy, soy, wheat, yeast
Every batch 3rd party lab tested
FDA Disclaimer Statement
These statements have not been evaluated by FDA. This product is not intended to diagnose, treat, cure or prevent any disease.
Precautions
Do not use if seal under the cap is broken or missing. Dietary supplement shouldn't be used as a substitute for a varied diet
Caution: If you are pregnant, breast feeding, or taking medications, consult your doctor before use.
Discontinue use and consult your doctor if any adverse reactions occur.
Keep out of reach of children.
Storage
Store in cool, dry place
General Statements
Not for medicinal use
1% for the planet
License Number : 10018064001315
Seals/Symbols
fssai Lic. No.: 20817018000147 Vcaps Plus GMP Good Manufacturing Practice Quality Product
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Directions for Use: Take 1 capsule, daily, preferably on an empty stomach at bedtime or as directed by your physician.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
5-HTP Extract by Herbadiet label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in 5-HTP Extract by Herbadiet
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.
5-HTP
Interacts with398 drugs
5-HTP is a compound your body uses to make serotonin, and people take it as a supplement hoping to improve mood, sleep, and headaches. Some early rese...
5-HTP monograph & interactionsOther (inactive) ingredients: Vegetable Cellulose Shell. These complete the product’s ingredient list but are not active constituents.
5-HTP Extract by Herbadiet Drug Interactions
HelloPharmacist Interaction Report
Herbadiet's 5-HTP Extract contains a single active ingredient that does interact with medications.
The most serious concern is with serotonergic drugs—antidepressants, certain pain relievers, and migraine medications. Combining 5-HTP with these can increase serotonin levels too much, raising the risk of serotonin syndrome (a condition marked by agitation, confusion, rapid heartbeat, and muscle rigidity) and other serotonergic side effects.
Read the full breakdown — every affected drug type, severity by severity
Two other drug classes warrant caution. CNS depressants—sleep aids, sedatives, and some pain medications—may have an additive effect when taken with 5-HTP, potentially deepening drowsiness.
Carbidopa (Lodosyn), used for Parkinson's disease, can also amplify serotonergic effects and increase the risk of restlessness, anxiety, insomnia, and in rare cases, mania.
Altogether, these interactions span 398 individual medications. Before you start this product, use the interaction checker on this page with your exact prescriptions.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against 5-HTP Extract?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in 5-HTP Extract interact with 398 drugs. Click any drug to see the details.
1 of the 1 ingredient in 5-HTP Extract interact with drugs. Each result below shows which ingredient is responsible. 5-HTP
Belladonna Extract, PhenobarbitalBelap
How Belladonna Extract, Phenobarbital interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Belladonna Extract, Phenobarbital interactionBelladonna, Caffeine, Ergotamine, PentobarbitalMicomp PB
How Belladonna, Caffeine, Ergotamine, Pentobarbital interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Belladonna, Caffeine, Ergotamine, Pentobarbital interactionBelladonna, Ergotamine Tartrate, Phenobarbital
How Belladonna, Ergotamine Tartrate, Phenobarbital interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Belladonna, Ergotamine Tartrate, Phenobarbital interactionBelladonna, Ergotamine, PhenobarbitalBellergal-S
How Belladonna, Ergotamine, Phenobarbital interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Belladonna, Ergotamine, Phenobarbital interactionBelladonna, OpiumB & O Supprettes
How Belladonna, Opium interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Belladonna, Opium interactionBelladonna, PhenobarbitalBellophen, Susano
How Belladonna, Phenobarbital interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Belladonna, Phenobarbital interactionBellafoline, Caffeine, Ergotamine Tartrate, PentobarbitalCafergot PB
How Bellafoline, Caffeine, Ergotamine Tartrate, Pentobarbital interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Bellafoline, Caffeine, Ergotamine Tartrate, Pentobarbital interactionBellafoline, PhenobarbitalBelladenal, Belladenal-S
How Bellafoline, Phenobarbital interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Bellafoline, Phenobarbital interactionBenactyzine, MeprobamateDeprol
How Benactyzine, Meprobamate interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Benactyzine, Meprobamate interactionBenzhydrocodone, AcetaminophenApadaz
How Benzhydrocodone, Acetaminophen interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants, Serotonergic Drugs Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Benzhydrocodone, Acetaminophen interactionBenzocaine, DextromethorphanTetra-Formula
How Benzocaine, Dextromethorphan interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpSerotonergic Drugs Moderate
Interaction Summary
Combining serotonergic drugs with 5-HTP might cause additive serotonergic effects.
Read the full 5-htp + Benzocaine, Dextromethorphan interactionBrexanoloneZulresso
How Brexanolone interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Brexanolone interactionBrexpiprazoleRexulti
How Brexpiprazole interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpSerotonergic Drugs Moderate
Interaction Summary
Combining serotonergic drugs with 5-HTP might cause additive serotonergic effects.
Read the full 5-htp + Brexpiprazole interactionBromazepamLectopam
How Bromazepam interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Bromazepam interactionBrompheniramine, Dextromethorphan, PhenylephrineDimetapp DM
How Brompheniramine, Dextromethorphan, Phenylephrine interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpSerotonergic Drugs Moderate
Interaction Summary
Combining serotonergic drugs with 5-HTP might cause additive serotonergic effects.
Read the full 5-htp + Brompheniramine, Dextromethorphan, Phenylephrine interactionBuprenorphineBrixadi, Butrans, Sublocade, Subutex
How Buprenorphine interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpSerotonergic Drugs, Cns Depressants Moderate
Interaction Summary
Combining serotonergic drugs with 5-HTP might cause additive serotonergic effects.
Read the full 5-htp + Buprenorphine interactionBuprenorphine HydrochlorideBelbuca, Probuphine
How Buprenorphine Hydrochloride interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Buprenorphine Hydrochloride interactionBuprenorphine Hydrochloride, Naloxone HydrochlorideBunavail
How Buprenorphine Hydrochloride, Naloxone Hydrochloride interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Buprenorphine Hydrochloride, Naloxone Hydrochloride interactionBuprenorphine, NaloxoneCassipa, Zubsolv
How Buprenorphine, Naloxone interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Buprenorphine, Naloxone interactionBuprenorphine/naloxoneSuboxone
How Buprenorphine/naloxone interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Buprenorphine/naloxone interactionBuproprion, DextromethorphanAuvelity
How Buproprion, Dextromethorphan interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpSerotonergic Drugs Moderate
Interaction Summary
Combining serotonergic drugs with 5-HTP might cause additive serotonergic effects.
Read the full 5-htp + Buproprion, Dextromethorphan interactionBuspironeBuSpar
How Buspirone interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpSerotonergic Drugs Moderate
Interaction Summary
Combining serotonergic drugs with 5-HTP might cause additive serotonergic effects.
Read the full 5-htp + Buspirone interactionButabarbital SodiumButisol Sodium, Sarisol #2
How Butabarbital Sodium interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Butabarbital Sodium interactionButabarbital, Phenobarbital, SecobarbitalS.B.P.
How Butabarbital, Phenobarbital, Secobarbital interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Butabarbital, Phenobarbital, Secobarbital interactionButalbital, Phenobarbital, SecobarbitalTribarb
How Butalbital, Phenobarbital, Secobarbital interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Butalbital, Phenobarbital, Secobarbital interactionButorphanolStadol
How Butorphanol interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Butorphanol interactionCaffeine, Diphenhydramine, Ergotamine (prescription Drug)Ergodryl
How Caffeine, Diphenhydramine, Ergotamine (prescription Drug) interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Caffeine, Diphenhydramine, Ergotamine (prescription Drug) interactionCamphor, Hyoscyamine, Passif, Phenobarbital, Scopolamine, ValerianNevrotose #3
How Camphor, Hyoscyamine, Passif, Phenobarbital, Scopolamine, Valerian interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Camphor, Hyoscyamine, Passif, Phenobarbital, Scopolamine, Valerian interactionCannabidiol (prescription Drug)Epidiolex
How Cannabidiol (prescription Drug) interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpCns Depressants Moderate
Interaction Summary
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
Read the full 5-htp + Cannabidiol (prescription Drug) interactionCarbamazepineCarbatrol, Carnexiv, Equetro, Tegretol, Tegretol XR
How Carbamazepine interacts with 5-HTP Extract — through 1 ingredient. Tap an ingredient for the detail:
5-htpSerotonergic Drugs, Cns Depressants Moderate
Interaction Summary
Combining serotonergic drugs with 5-HTP might cause additive serotonergic effects.
Read the full 5-htp + Carbamazepine interactionEach ingredient & the kinds of drugs it affects
For each ingredient in 5-HTP Extract with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
5-HTP
Carbidopa (Lodosyn)
Combining 5-HTP and carbidopa can increase the risk of serotonergic side effects.
Carbidopa is sometimes used with 5-HTP to minimize peripheral 5-HTP metabolism and boost the amount that reaches the brain. However, this combination might also increase the risk of some side effects including hypomania, restlessness, rapid speech, anxiety, insomnia, and aggressiveness. Combining carbidopa and 5-HTP might also increase the risk of scleroderma-like skin changes due to elevated serotonin levels.
Cns Depressants
Theoretically, concomitant use of 5-HTP with medications that cause sedation might have additive effects.
In clinical trials, 5-HTP has been associated with drowsiness and somnolence.
Serotonergic Drugs
Combining serotonergic drugs with 5-HTP might cause additive serotonergic effects.
5-HTP can increase serotonin levels and cause serotonergic effects. Theoretically, combining serotonergic drugs with 5-HTP might increase the risk of serotonergic side effects, including serotonin syndrome and cerebral vasoconstrictive disorders. However, serotonin syndrome with 5-HTP has not yet been reported in humans. Monitor patients for signs of serotonin syndrome and other serotonergic side effects if using 5-HTP with serotonergic drugs.
Brand information
Manufacturer and brand details for 5-HTP Extract, from the product label.
Herbadiet
See all Herbadiet products- Name
- Arkure Health Care
- City
- Haryana
- State
- India
- Web Address
- www.herbadiet.in
5-HTP Extract by Herbadiet: Common Questions
Does 5-HTP Extract by Herbadiet interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
What is 5-HTP and what does it do?
Does 5-HTP actually work for depression?
What are the most common side effects?
Is it safe to take during pregnancy or while breastfeeding?
Why is carbidopa a concern with 5-HTP?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if 5-HTP Extract is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind 5-HTP Extract’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
5-HTP Extract's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 32 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
5-htp 32 references
- Birdsall TC. 5-Hydroxytryptophan: A Clinically-Effective Serotonin Precursor. Altern Med Rev 1998;3:271-80.
- Michelson D, Page SW, Casey R, et al. An eosinophilia-myalgia syndrome related disorder associated with exposure to L-5-hydroxytryptophan. J Rheumatol 1994;21:2261-5.
- Cangiano C, Ceci F, Cancino A, et al. Eating behavior and adherence to dietary prescriptions in obese adult subjects treated with 5-hydroxytryptophan. Am J Clin Nutr 1992;56:863-7. PubMed
- U.S. Food and Drug Administration. Impurities confirmed in dietary supplement 5-hydroxy-L-tryptophan. FDA Talk Paper, August 31, 1998; T98-48.
- Sternberg EM, Van Woert MH, Young SN, et al. Development of a scleroderma-like illness during therapy with L-5-hydroxytryptophan and carbidopa. N Engl J Med 1980;303:782-7. PubMed
- Poldinger W, Calanchini B, Schwarz W. A functional-dimensional approach to depression: serotonin deficiency as a target syndrome in a comparison of 5-hydroxytryptophan and fluvoxamine. Psychopathology 1991;24:53-81.
- Ribeiro CA. L-5-Hydroxytryptophan in the prophylaxis of chronic tension-type headache: a double-blind, randomized, placebo-controlled study. Headache 2000;40:451-6.
- U. S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, Office of Nutritional Products, Labeling, and Dietary Supplements. Information Paper on L-Tryptophan and 5-hydroxy-L-tryptophan, February 2001.
- Singhal AB, Caviness VS, Begleiter AF, et al. Cerebral vasoconstriction and stroke after use of serotonergic drugs. Neurology 2002;58:130-3. PubMed
- Johnson KL, Klarskov K, Benson LM, et al. Presence of peak X and related compounds: the reported contaminant in case related 5-hydroxy-L-tryptophan associated with eosinophilia-myalgia syndrome. J Rheumatol 1999;26:2714-7.
- Takahashi S, Kondo H, Kato N. Effect of l-5-hydroxytryptophan on brain monoamine metabolism and evaluation of its clinical effect in depressed patients. J Psychiatr Res 1975;12:177-87. PubMed
- Iovieno, N., Dalton, E. D., Fava, M., and Mischoulon, D. Second-tier natural antidepressants: review and critique. J Affect.Disord. 2011;130(3):343-357. PubMed
- den Boer JA, Westenberg HG. Behavioral, neuroendocrine, and biochemical effects of 5-hydroxytryptophan administration in panic disorder. Psychiatry Res 1990;31:267-78. PubMed
- Jangid P, Malik P, Singh P, Sharma M, Gulia AK. Comparative study of efficacy of l-5-hydroxytryptophan and fluoxetine in patients presenting with first depressive episode. Asian J Psychiatr 2013;6:29-34. PubMed
- Ceci F, Cangiano C, Cairella M, et al. The effects of oral 5-hydroxytryptophan administration on feeding behavior in obese adult female subjects. J Neural Transm 1989;76:109-17. PubMed
- Angst J, Woggon B, Schoepf J. The treatment of depression with L-5-hydroxytryptophan versus imipramine. Results of two open and one double-blind study. Arch Psychiatr Nervenkr 1977;224:175-86. DOI
- Titus F, Dávalos A, Alom J, Codina A. 5-Hydroxytryptophan versus methysergide in the prophylaxis of migraine. Randomized clinical trial. Eur Neurol 1986;25:327-9. PubMed
- De Benedittis G, Massei R. Serotonin precursors in chronic primary headache. A double-blind cross-over study with L-5-hydroxytryptophan vs. placebo. J Neurosurg Sci 1985;29:239-48.
- Van Woert, M. H., Rosenbaum, D., Howieson, J., and Bowers, M. B., Jr. Long-term therapy of myoclonus and other neurologic disorders with L-5- hydroxytryptophan and carbidopa. N Engl J Med 1-13-1977;296(2):70-75. PubMed
- Wyatt, R. J., Vaughan, T., Galanter, M., Kaplan, J., and Green, R. Behavioral changes of chronic schizophrenic patients given L-5- hydroxytryptophan. Science 9-22-1972;177(54):1124-1126. PubMed
- Chase, T. N., Ng, L. K., and Watanabe, A. M. Parkinson's disease. Modification by 5-hydroxytryptophan. Neurology 1972;22(5):479-484.
- van Hiele LJ. l-5-Hydroxytryptophan in depression: the first substitution therapy in psychiatry? The treatment of 99 out-patients with 'therapy-resistant' depressions. Neuropsychobiology 1980;6:230-40. PubMed
- Pranzatelli, M. R., Tate, E., Huang, Y., Haas, R. H., Bodensteiner, J., Ashwal, S., and Franz, D. Neuropharmacology of progressive myoclonus epilepsy: response to 5- hydroxy-L-tryptophan. Epilepsia 1995;36(8):783-791. PubMed
- Trouillas P, Serratrice G, Laplane D, et al. Levorotatory form of 5-hydroxytryptophan in Friedreich's ataxia. Results of a double-blind drug-placebo cooperative study. Arch Neurol 1995;52:456-60. PubMed
- Bastard, J., Truelle, J. L., and Emile, J. [Effectiveness of 5 hydroxy-tryptophan in Parkinson's disease]. Nouv Presse Med 9-11-1976;5(29):1836-1837.
- Auffret, M., Comte, H., and Bene, J. Eosinophilia-myalgia syndrome induced by L-5 hydroxytryptophane: about three cases. Fund Clin Pharmacol 2013;Suppl 1(120):poster P2-204.
- Wyatt, R. J., Vaughan, T., Kaplan, J., Galanter, M., and Green, R. 5-Hydroxytryptophan and chronic schizophrenia. In: Barchas J and Usdin E. Serotonin and Behavior. New York: Acedemic Press;1973.
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