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Dietary supplement

Amino Acid Complex Ingredients & Drug Interactions

by SuperLife

Amino Acid Complex label
See full label image
Capsule Category: Other Combinations
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Amino Acid Complex 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

The interaction bottom line Most serious interaction: Major

Amino Acid Complex is a dietary supplement by SuperLife with 4 active ingredients.Based on those ingredients, 489 medications have a known interaction with it, the most serious rated major. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Amino Acid Complex by SuperLife

Ask about any prescription or over-the-counter medication and we check it for interactions with Amino Acid Complex by SuperLife — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Amino Acid Complex by SuperLife

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.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 20 of its 20 active ingredients.
  • “Essential Amino Acids” is listed as a grouped ingredient — the label doesn't break down how much of each component you get.
  • “Non-Essential Amino Acids” is listed as a grouped ingredient — the label doesn't break down how much of each component you get.
  • “Free-Form Amino Acid Complex” is a proprietary blend — the label gives one combined amount (1,560 mg) without saying how much of each component you get.

This product contains 20 amino acids—the building blocks of protein. The main actives include L-glutamine (often used for gut and immune support), glycine, L-leucine, L-alanine, L-isoleucine, L-methionine, L-lysine, L-tyrosine, L-phenylalanine, L-valine, L-proline, L-ornithine, L-aspartic acid, L-histidine, L-threonine, L-cysteine, L-serine, taurine, L-arginine, and L-carnitine.

The product also lists several blended groups (Essential Amino Acids, Non-Essential Amino Acids, Free-Form Amino Acid Complex, Essential BCAAs, and Conditional Amino Acids) whose individual components are accounted for in the formula. Inactive ingredients are gelatin and titanium dioxide.

Does it work?

Moderate evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: support healthy muscle growth, repair, and maintenance.
  • We looked for evidence on: Athletic performance, Cachexia, Critical illness (trauma), muscle strength, muscle recovery, endurance — and 1 related terms.
  • The strongest evidence on file: Ornithine is rated "Possibly Effective" for Athletic performance (Natural Medicines).
  • Also on file: Glutamine is rated "Possibly Effective" for Critical illness (trauma).
  • Also on file: Glutamine is rated "Possibly Ineffective" for Athletic performance.

The evidence for this product's ingredients is mixed. L-Glutamine is effective for sickle cell disease and possibly effective for HIV/AIDS-related wasting, postoperative recovery, and critical illness.

L-Tyrosine is effective for phenylketonuria (PKU) and possibly effective for cognitive function and memory. L-Lysine is possibly effective for cold sores.

L-Carnitine is effective for carnitine deficiency and possibly effective for high cholesterol, heart failure, and angina. L-Serine and glycine are possibly effective for schizophrenia.

L-Ornithine is possibly effective for athletic performance, and taurine is possibly effective for hepatitis and heart failure. However, most other uses across the ingredients show insufficient reliable evidence to determine whether they work—for example, effects on ADHD, bone health, athletic performance in general, and cognitive function in dementia are not established in the data we hold.

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 11 of the 17 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 17 of 17.
  • General safety write-ups exist for 17 of 17.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

The ingredients are generally well tolerated at typical doses, though side effects do occur. L-Glutamine can cause belching, bloating, constipation, diarrhea, nausea, and vomiting—especially at higher doses—and is best avoided in kidney or liver disease without medical oversight.

L-Phenylalanine may cause anxiety, insomnia, headache, nausea, and constipation, and must be avoided in pregnancy and breastfeeding. L-Tyrosine and L-Arginine can cause headache, nausea, and diarrhea.

L-Carnitine may cause a fish-like body odor and digestive upset. L-Serine at high doses carries a rare risk of seizures.

Taurine is generally well tolerated short-term. L-Lysine and L-Threonine may cause digestive upset.

Pregnancy and breastfeeding safety varies by ingredient: L-Glutamine, L-Methionine, L-Cysteine, and Taurine are rated likely safe; others either lack sufficient data or are advised against—check the ingredient-by-ingredient safety notes above before use if you are pregnant or nursing.

Meds to double-check

Major interaction found
Known Interaction Concern · database check
Major identified

At least one ingredient has a documented Major-severity interaction. Check your medications for a personalized result.

Why this rating?
  • 10 of the 17 matched ingredients can interact with medications — Lysine, Phenylalanine, L-arginine, Glutamine, Taurine, among others.
  • The most serious interaction on file is rated Major.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; seizure medications; diabetes medications; lithium; Parkinson's medications.
  • For scale: 489 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Double-check this product with your pharmacist if you take any of these: levodopa or other Parkinson's drugs (L-phenylalanine and L-tyrosine compete for absorption), antiseizure medications (anticonvulsants), monoamine oxidase inhibitors (MAOIs), baclofen, blood pressure-lowering drugs, blood thinners (warfarin, acenocoumarol, antiplatelet drugs), potassium-sparing diuretics, antidiabetes drugs, ACE inhibitors, angiotensin receptor blockers (ARBs), lithium, thyroid hormone, or clozapine.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Major medication interactions have been identified, and safety information is well characterized.

This amino acid complex may be worth considering if you have a specific deficiency or are recovering from illness, since some ingredients have proven benefit in those areas. However, if you take Parkinson's medication, blood pressure drugs, blood thinners, diabetes medications, MAOIs, or thyroid hormone, talk to your pharmacist or doctor first—several ingredients in this product could interfere with how those medications work.

The same goes for pregnancy, breastfeeding, kidney or liver disease, or bipolar disorder.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 17 of 20 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Dec 21, 2024.

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

At a glance

General information

Key facts about Amino Acid Complex, straight from the product label.

Brand SuperLife
Net contents 90 Capsule(s)
Market status On market
Date entered into DSLD Dec 21, 2024
DSLD ID 320385
Product type Other Combinations
Supplement form Capsule
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
From the label
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 Amino Acid Complex by SuperLife, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
2 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
Servings per container
45
IngredientAmount% DV
L-Glutamine120 mg--
Glycine24 mg--
L-Leucine240 mg--
L-Alanine24 mg--
L-Isoleucine120 mg--
L-Methionine120 mg--
L-Lysine Hydrochloride120 mg--
L-Tyrosine24 mg--
L-Phenylalanine120 mg--
L-Valine120 mg--
L-Proline24 mg--
L-Ornithine Hydrochloride24 mg--
L-Aspartic Acid24 mg--
L-Histidine Hydrochloride120 mg--
L-Threonine120 mg--
L-Cysteine Hydrochloride24 mg--
L-Serine24 mg--
Taurine24 mg--
L-Arginine Hydrochloride120 mg--
L-Carnitine Fumarate24 mg--
Essential Amino Acids0 NP--
Non-Essential Amino Acids0 NP--
Free-Form Amino Acid Complex1560 mg--
Essential BCAAs0 NP--
Conditional Amino Acids0 NP--

Other ingredients: Gelatin, Titanium Dioxide

Tap any ingredient to jump to its full detail below.

Label statements
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.
Brand IP Statement(s)

SuperLife Natural Source

Formula

Fast-Absorbing free-form Amino Acids 20 Free-form Amino Acids including essential (with BCAAs),conditional, and non-essential Amino Acids to support healthy muscle growth, repair, and maintenance, as well as promote increased endurance and recovery during workouts.

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Directions: Adults, take 2 capsules daily with water, preferably with a meal. Use only as directed. For best results, take on a regular basis.

Precautions

Warning: Consult a physician before using if you are pregnant, nursing a baby, have heart disease, taking medication, or have any known medical condition. Dietary supplements can affect the way medicines work.

Keep this and all Dietary Supplements out of the reach of children.

Warning: Contains Phenylalanine, do not take this product if you have PKU (Phenylketonuria) a genetic disorder that prevents your body from breaking down the amino acids - Phenylalanine.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Amino Acid Complex by SuperLife label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Amino Acid Complex label

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)
What’s inside

The Ingredients in Amino Acid Complex by SuperLife

These are the 4 active ingredients this product is made of. Select any to open its full monograph.

Serving size2 Capsule(s) Dosage formCapsule Servings per container45 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Free-Form Amino Acid Complex

1560 mg per serving
  • › Essential Amino Acids
  • › Non-Essential Amino Acids
  • › Essential BCAAs
  • › Conditional Amino Acids

Other (inactive) ingredients: Gelatin, Titanium Dioxide. These complete the product’s ingredient list but are not active constituents.

Interaction report

Amino Acid Complex by SuperLife Drug Interactions

Want to check YOUR meds against Amino Acid Complex?

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 checker
489Drugs
8 Major 473 Moderate 8 Minor

Ingredients driving the most interactions

Individual Drug Interactions

The ingredients in Amino Acid Complex interact with 489 drugs. Click any drug to see the details.

0 of the 4 ingredients in Amino Acid Complex interact with drugs. Each result below shows which ingredient is responsible.

Each ingredient & the kinds of drugs it affects

For each ingredient in Amino Acid Complex 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.

The maker

Brand information

Manufacturer and brand details for Amino Acid Complex, from the product label.

SuperLife

See all SuperLife products
Name
SuperLife
Pharmacist Counseling Corner

Amino Acid Complex by SuperLife: Common Questions

Does Amino Acid Complex by SuperLife interact with any medications?
Yes. Based on its ingredients, Amino Acid Complex has a known interaction with 489 medications, including 8 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Amino Acid Complex contains 4 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Is this safe to take while I'm pregnant?
It depends on which ingredient. L-Glutamine, L-Methionine, L-Cysteine, and Taurine are rated likely safe in pregnancy. However, L-Phenylalanine is advised against, and several others—L-Tyrosine, L-Lysine, L-Ornithine, L-Aspartic Acid, L-Serine—lack enough safety data. Talk with your doctor or pharmacist before taking this product if you're pregnant, since safety hasn't been fully established for most of the formula.
Can I take this while breastfeeding?
Safety data for supplement doses while breastfeeding is limited for most of these ingredients. L-Phenylalanine should be avoided, and L-Ornithine and L-Serine are advised against. Taurine occurs naturally in breast milk, but supplement safety is uncertain. Talk with your doctor or pharmacist before use.
What is taurine, and what does it do?
Taurine is an amino acid made naturally in your body. In this product, it's possibly effective for hepatitis and congestive heart failure (heart failure). It's generally well tolerated short-term, though long-term safety is less certain. The most common side effects are constipation, diarrhea, and indigestion.
Will L-carnitine help me lose weight?
L-Carnitine is rated possibly ineffective for obesity in the data we hold. It is effective for carnitine deficiency and possibly effective for high cholesterol, heart failure, and angina. If weight loss is your goal, this ingredient won't help.
What's L-arginine for, and does it work?
The product facts don't include effectiveness ratings for L-arginine alone. What we know is that it can lower blood pressure and interact with many blood pressure and heart medications. If you're considering this product for a specific reason, ask your pharmacist whether the evidence supports it.
Can this help with muscle growth or athletic performance?
L-Ornithine is possibly effective for athletic performance. L-Phenylalanine is rated possibly ineffective for ADHD, and L-Tyrosine is rated possibly ineffective for athletic performance. Most of the other amino acids in the product lack established evidence for muscle or athletic benefit in our data.

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

Not sure if Amino Acid Complex is safe with your meds?

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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.

Amino Acid Complex label
Sources

Sources & How We Checked

Amino Acid Complex'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.

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 210 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.

Glutamine 11 references
  1. Miller AL. Therapeutic considerations of L-glutamine: a review of the literature. Altern Med Rev 1999;4:239-48..
  2. Bozzetti F, Biganzoli L, Gavazzi C, et al. Glutamine supplementation in cancer patients receiving chemotherapy: a double-blind randomized study. Nutrition 1997;13:748-51.. PubMed
  3. Mebane AH. L-Glutamine and mania. Am J Psychiatry 984;141:1302-3.
  4. Meldrum BS. Glutamate as a neurotransmitter in the brain: review of physiology and pathology. J Nutr 2000;130:1007S-15S.. PubMed
  5. Garlick PJ. Assessment of the safety of glutamine and other amino acids. J Nutr 2001;131:2556S-61S.. PubMed
  6. Chapman AG. Glutamate and epilepsy. J Nutr 2000;130:1043S-5S.. PubMed
  7. Ziegler TR. Glutamine supplementation in cancer patients receiving bone marrow transplantation and high dose chemotherapy. J Nutr 2001;131:2578S-84S.. PubMed
  8. Laviano A, Molfino A, Lacaria MT, Canelli A, De Leo S, Preziosa I, Rossi Fanelli F. Glutamine supplementation favors weight loss in nondieting obese female patients. A pilot study. Eur J Clin Nutr. 2014 Nov;68(11):1264-6. PubMed
  9. Endari (l-glutamine) [package insert]. Torrance, CA: Emmaus Medical,Inc; 2017.
  10. Niihara Y, Miller ST, Kanter J, et al. A Phase 3 Trial of l-Glutamine in Sickle Cell Disease. N Engl J Med 2018;379(3):226-35. doi: 10.1056/NEJMoa1715971.
  11. Ogden HB, Child RB, Fallowfield JL, et al. Gastrointestinal Tolerance of Low, Medium and High Dose Acute Oral l-Glutamine Supplementation in Healthy Adults: A Pilot Study. Nutrients. 2020;12(10):2953. PubMed

See these in context on the Glutamine monograph →

Glycine 5 references
  1. Heresco-Levy U, Javitt DC, Ermilov M, et al. Efficacy of high-dose glycine in the treatment of enduring negative symptoms of schizophrenia. Arch Gen Psychiatry 1999;56:29-36.. PubMed
  2. Potkin SG, Jin Y, Bunney BG, Costa J, Gulasekaram B. Effect of clozapine and adjunctive high-dose glycine in treatment-resistant schizophrenia. Am J Psychiatry 1999;156:145-7.. PubMed
  3. Gusev EI, Skvortsova VI, Dambinova SA, et al. Neuroprotective effects of glycine for therapy of acute ischaemic stroke. Cerebrovasc Dis 2000;10:49-60. PubMed
  4. Inagawa K, Kawai N, Ono K, Sukegawa E, Tsubuku S, Takahashi M. Assessment of acute adverse effects of glycine ingestion at a high dose in human volunteers. Seikatsu Eisei. 2006; 50:27-32.
  5. Woods SW, Walsh BC, Hawkins KA, Miller TJ, Saksa JR, D'Souza DC, Pearlson GD, Javitt DC, McGlashan TH, Krystal JH. Glycine treatment of the risk syndrome for psychosis: report of two pilot studies. Eur Neuropsychopharmacol. 2013 Aug;23(8):931-40. PubMed

See these in context on the Glycine monograph →

Alpha-alanine 2 references
  1. Amino acids — MedlinePlus (NIH) Source
  2. Dietary Supplements: What You Need to Know — NIH Office of Dietary Supplements Source

See these in context on the Alpha-alanine monograph →

Methionine 12 references
  1. La Vecchia C, Negri E, Franceschi S, Decarli A. Case-control study on influence of methionine, nitrite, and salt on gastric carcinogenesis in northern Italy. Nutr Cancer 1997;27:65-8. PubMed
  2. Btaiche IF, Khalidi N. Parenteral nutrition-associated liver complications in children. Pharmacotherapy 2002;22:188-211.. PubMed
  3. Cottington EM, LaMantia C, Stabler SP, et al. Adverse event associated with methionine loading test: a case report. Arterioscler Thromb Vasc Biol 2002;22:1046-50.. PubMed
  4. Anon. Should methionine be added to paracetamol formulations? Drug Ther Perspect 1997;10:11-3. DOI
  5. Smulders, Y. M., Rakic, M., Slaats, E. H., Treskes, M., Sijbrands, E. J., Odekerken, D. A., Stehouwer, C. D., and Silberbusch, J. Fasting and post-methionine homocysteine levels in NIDDM. Determinants and correlations with retinopathy, albuminuria, and c
  6. McAuley, D. F., Hanratty, C. G., McGurk, C., Nugent, A. G., and Johnston, G. D. Effect of methionine supplementation on endothelial function, plasma homocysteine, and lipid peroxidation. J.Toxicol.Clin.Toxicol. 1999;37(4):435-440. PubMed
  7. Hanratty, C. G., McGrath, L. T., McAuley, D. F., Young, I. S., and Johnston, G. D. The effects of oral methionine and homocysteine on endothelial function. Heart 2001;85(3):326-330. PubMed
  8. Ward, M., McNulty, H., McPartlin, J., Strain, J. J., Weir, D. G., and Scott, J. M. Effect of supplemental methionine on plasma homocysteine concentrations in healthy men: a preliminary study. Int.J.Vitam.Nutr.Res. 2001;71(1):82-86. PubMed
  9. Yaghmai, R., Kashani, A. H., Geraghty, M. T., Okoh, J., Pomper, M., Tangerman, A., Wagner, C., Stabler, S. P., Allen, R. H., Mudd, S. H., and Braverman, N. Progressive cerebral edema associated with high methionine levels and betaine therapy in a patient
  10. Talukdar R, Murthy HV, Reddy DN. Role of methionine containing antioxidant combination in the management of pain in chronic pancreatitis: a systematic review and meta-analysis. Pancreatology 2015;15(2):136-44. PubMed
  11. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids. Washington, DC: The National Academies Press, 2005. Available at: https://doi.org/10.17226 DOI
  12. Khairan P, Sobue T, Eshak ES, et al. Association of B Vitamins and Methionine Intake with the Risk of Gastric Cancer: The Japan Public Health Center-based Prospective Study. Cancer Prev Res (Phila) 2022;15(2):101-110. PubMed

See these in context on the Methionine monograph →

Lysine 7 references
  1. Thein DJ, Hurt WC. Lysine as a prophylactic agent in the treatment of recurrent herpes simplex labialis. Oral Surg Oral Med Oral Pathol 1984;58:659-66. PubMed
  2. McCune MA, Perry HO, Muller SA, O'Fallon WM. Treatment of recurrent herpes simplex infections with L-lysine monohydrochloride. Cutis 1984;34:366-73.
  3. DiGiovanna JJ, Blank H. Failure of lysine in frequently recurrent herpes simplex infection. Treatment and prophylaxis. Arch Dermatol 1984;120:48-51. DOI
  4. Milman N, Scheibel J, Jessen O. Lysine prophylaxis in recurrent herpes simplex labialis: a double-blind, controlled crossover study. Acta Derm Venereol 1980;60:85-7.
  5. Griffith RS, Walsh DE, Myrmel KH, et al. Success of L-lysine therapy in frequently recurrent herpes simplex infection. Treatment and prophylaxis. Dermatologica 1987;175:183-90. DOI
  6. Lo JC, Chertow GM, Rennke H, Seifter JL. Fanconi's syndrome and tubulointerstitial nephritis in association with L-lysine ingestion. Am J Kidney Dis 1996;28:614-7. PubMed
  7. Smriga M, Torii K. L-Lysine acts like a partial serotonin receptor 4 antagonist and inhibits serotonin-mediated intestinal pathologies and anxiety in rats. Proc Natl Acad Sci U S A. 2003 Dec 23;100(26):15370-5.

See these in context on the Lysine monograph →

Tyrosine 4 references
  1. Meyer JS, Welch KM, Deshmukh VD, et al. Neurotransmitter precursor amino acids in the treatment of multi-infarct dementia and Alzheimer's disease. J Amer Geriat Soc 1977;25:289-98.
  2. DiPiro JT, Talbert RL, Yee GC, et al; eds. Pharmacotherapy: A pathophysiologic approach. 4th ed. Stamford, CT: Appleton & Lange, 1999.
  3. Wood DR, Reimherr FW, Wender PH. Amino acid precursors for the treatment of attention deficit disorder, residual type. Psychopharmacol Bull 1985;21:146-9.
  4. van Spronsen FJ, van Rijn M, Bekhof J. Phenylketonuria: tyrosine supplementation in phenylalanine-restricted diets. Am J Clin Nutr 2001;73:153-7. PubMed

See these in context on the Tyrosine monograph →

Phenylalanine 23 references
  1. Rouse B, Azen C, Koch R, et al. Maternal phenylketonuria collaborative Study (MPKUCS) offspring: facial anomalies, malformations, and early neurological sequelae. Am J Med Genet 1997;69:89-95. DOI
  2. Sturtevant FM. Use of aspartame in pregnancy. Int J Fertil 1985;30:85-7.
  3. Silkaitis RP, Mosnaim AD. Pathways linking L-phenylalanine and 2-phenylethylamine with p-tyramine in rabbit brain. Brain Res 1976;114:105-15.
  4. Lehmann WD, Theobald N, Fischer R, Heinrich HC. Stereospecificity of phenylalanine plasma kinetics and hydroxylation in man following oral application of a stable isotope-labelled pseudo-racemic mixture of L- and D-phenylalanine. Clin Chim Acta 1983;128 PubMed
  5. Mosnik DM, Spring B, Rogers K, Baruah S. Tardive dyskinesia exacerbated after ingestion of phenylalanine by schizophrenic patients. Neuropsychopharmacology 1997;16:136-46. PubMed
  6. Siddiqui AH, Stolk LM, Bhaggoe R, et al. L-phenylalanine and UVA irradiation in the treatment of vitiligo. Dermatology 1994;88:215-8. PubMed
  7. Birkmayer W, Riederer P, Linauer W, Knoll J. L-deprenyl plus L-phenylalanine in the treatment of depression. J Neural Transm 1984;59:81-7. PubMed
  8. Nutt JG, Woodward WR, Hammerstad JP, et al. The "on-off" phenomenon in Parkinson's disease. Relation to levodopa absorption and transport. N Engl J Med 1984;310:483-8. PubMed
  9. Baruzzi A, Contin M, Riva R, et al. Influence of meal ingestion time on pharmacokinetics of orally administered levodopa in parkinsonian patients. Clin Neuropharmacol 1987;10:527-37. PubMed
  10. Juncos JL, Fabbrini G, Mouradian MM, et al. Dietary influences on the antiparkinsonian response to levodopa. Arch Neurol 1987;44:1003-5. PubMed
  11. Eriksson T, Granerus AK, Linde A, et al. "On-off" phenomenon in Parkinson's disease: relationship between dopa and other large neutral amino acids in plasma. Neurology 1988;38:1245-8. PubMed
  12. Baker GB, Bornstein RA, Rouget AC, et al. Phenylethylaminergic mechanisms in attention-deficit disorder. Biol Psychiatry 1991;29:15-22.. PubMed
  13. Wood DR, Reimherr FW, Wender PH. Treatment of attention deficit disorder with DL-phenylalanine. Psychiatry Res 1985;16:21-6.. PubMed
  14. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids (Macronutrients). Washington, DC: National Academy Press, 2002. Available at: http://www.n
  15. Cederbaum S. Phenylketonuria: an update. Curr Opin Pediatr 2002;14:702-6. PubMed
  16. Cejudo-Ferragud, E., Nacher, A., Polache, A., Cercos-Fortea, T., Merino, M., and Casabo, V. G. Evidence of competitive inhibition for the intestinal absorption of baclofen by phenylalanine. Int J of Pharm (Amsterdam) 1996;132:63-69. DOI
  17. Fischer, E., Heller, B., Nachon, M., and Spatz, H. Therapy of depression by phenylalanine. Preliminary note. Arzneimittelforschung. 1975;25(1):132.
  18. Beckmann, H., Strauss, M. A., and Ludolph, E. Dl-phenylalanine in depressed patients: an open study. J.Neural Transm. 1977;41(2-3):123-134. PubMed
  19. Sabelli, H. C., Fawcett, J., Gusovsky, F., Javaid, J. I., Wynn, P., Edwards, J., Jeffriess, H., and Kravitz, H. Clinical studies on the phenylethylamine hypothesis of affective disorder: urine and blood phenylacetic acid and phenylalanine dietary supplem
  20. Cotzias, G. C., Van Woert, M. H., and Schiffer, L. M. Aromatic amino acids and modification of parkinsonism. N Engl.J Med 2-16-1967;276(7):374-379. PubMed
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Proline 4 references
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Ornithine 1 reference
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Aspartic Acid 1 reference
  1. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids. Washington, DC: The National Academies Press, 2005. Available at: https://doi.org/10.17226 DOI

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Histidine 3 references
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Threonine 4 references
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Serine 3 references
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Taurine 21 references
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L-arginine 66 references
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L-carnitine 41 references
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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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