Interactions on record — worth a quick check against your medications. Based on 1 of 5 ingredients. Check your meds →
Dietary supplement

BCAA Dirty Shirley Ingredients & Drug Interactions

by NorthBound Nutrition

BCAA Dirty Shirley label
See full label image
Powder Category: Other Combinations
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking BCAA Dirty Shirley 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: Moderate

BCAA Dirty Shirley is a dietary supplement by NorthBound Nutrition with 5 active ingredients. Its ingredients are commonly taken for exercise performance and endurance, heart health, energy support.Based on those ingredients, 173 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Taurine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against BCAA Dirty Shirley by NorthBound Nutrition

Ask about any prescription or over-the-counter medication and we check it for interactions with BCAA Dirty Shirley by NorthBound Nutrition — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of BCAA Dirty Shirley by NorthBound Nutrition

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 16, 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 5 of its 5 active ingredients.
  • “Instantized BCAAs” is listed as a grouped ingredient — the label gives one combined amount (5 Gram(s)) without saying how much of each component you get.

BCAA Dirty Shirley is built on five active ingredients: three branched-chain amino acids (L-Leucine, L-Isoleucine, and L-Valine — often called BCAAs), plus taurine and erythritol. The BCAAs are amino acids your body uses for muscle protein synthesis and recovery; taurine is an amino acid-like compound involved in heart, nervous system, and metabolic function.

Erythritol is a sugar alcohol used here as a low-calorie sweetener. The powder also contains inactive ingredients — natural flavors, citric acid, organic stevia, and silica — as binders and flavor bases.

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

This product doesn't appear to be marketed for a specific use, so we graded Taurine's overall clinical evidence instead.

Moderate

Some clinical evidence supports Taurine for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredient's overall clinical evidence instead.
  • On file: Congestive heart failure (CHF) — rated "Possibly Effective" (Natural Medicines).
  • On file: Hepatitis — rated "Possibly Effective" (Natural Medicines).

Taurine, the one ingredient with established effectiveness data, is possibly effective for hepatitis and congestive heart failure (CHF) — meaning some evidence supports a benefit, but it's not definitive. For obesity, taurine is rated possibly ineffective.

We don't have effectiveness data in our records for the three individual BCAAs in this product, so we can't speak to whether they work for muscle recovery or any other purpose based on the facts we hold.

The evidence, ingredient by ingredient Taurine

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 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Taurine is generally well tolerated in typical doses for up to one year, though long-term safety is less certain — use it only under medical guidance if you're taking it long-term or at high supplement doses. The most common side effects are constipation, diarrhea, and indigestion.

Rare serious effects include hypersensitivity reactions (especially if you're sensitive to sulfonamides or sulfites), and case reports have raised concerns about cardiovascular effects in energy drinks, though it's unclear whether taurine or other ingredients in those drinks caused them. Taurine is rated likely safe in pregnancy and lactation, though supplement safety during breastfeeding hasn't been well studied — if you're nursing, talk with your doctor or pharmacist before starting.

Side effects, ingredient by ingredient Taurine

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Taurine.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: lithium.
  • For scale: 173 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.

Before taking this product, double-check with your doctor or pharmacist if you take blood pressure medications (antihypertensive drugs) — taurine may increase the risk of low blood pressure. If you're on lithium for bipolar disorder, confirm first that taurine won't interfere with your levels and dosing.

For all other medications, use the search tool below to verify.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.

BCAA Dirty Shirley is mainly a branched-chain amino acid powder with added taurine. If you're on blood pressure medications or lithium, check with your doctor or pharmacist before starting — taurine may lower blood pressure further or raise lithium levels.

For everyone else with no medications in those categories, run your exact drug list through the search tool on this page to be sure.

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

Assessment coverage: 1 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Feb 26, 2020.

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 BCAA Dirty Shirley, straight from the product label.

Brand NorthBound Nutrition
Barcode (UPC) 857773007022
Net contents 10.85 oz; 308 Gram(s)
Market status On market
Date entered into DSLD Feb 26, 2020
DSLD ID 213949
Product type Other Combinations
Supplement form Powder
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Women (not pregnant or lactating), Sugar Free
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 BCAA Dirty Shirley by NorthBound Nutrition, 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:
6.15 Gram(s)
Maximum serving Sizes:
12.3 Gram(s)
Servings per container
25
UPC/BARCODE
857773007022
IngredientAmount% DV
Calories0 Calorie(s)--
Total Carbohydrates4 Gram(s)1%
L-Leucine2.5 Gram(s)--
L-Isoleucine1.25 Gram(s)--
L-Valine1.25 Gram(s)--
Taurine1 Gram(s)--
Erythritol4 Gram(s)--
Instantized BCAAs5 Gram(s)--

Other ingredients: Natural flavors, Citric Acid, organic Stevia, Silica

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.
General Statements

Notice: Product amount based on weight, not volume. Some settling may occur.

Own your passion

Suggested/Recommended/Usage/Directions

To ensure proper mixture, shake well before use.

Suggested Use: Mix 1 scoop in 8-12 oz. of water; Consume during exercise. On days without exercise, consume 1/2-1 scoop through out the day.

Storage

Store in a cool, dry place.

Precautions

Warning: Intended for use by healthy adults, 18 years and older.

Consult your Physician before using this product if you are taking any mediation or under a Physician's care. Not for use by women that are pregnant, trying to become pregnant, or nursing.

Discontinue use if you experience any adverse reaction to this product.

Keep out of reach of children

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to cure, treat, or prevent any disease.

Formulation

Natural

Sugar Free

Made with Natural Flavors & Colors

Supports workout endurance Promotes muscle recovery When combined with a proper exercise and nutrition program.

Formula

Amino Acids

Natural Cherry & Lime Flavors

FDA Statement of Identity

Dietary Supplement

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

See for yourself

BCAA Dirty Shirley by NorthBound Nutrition label

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

BCAA Dirty Shirley 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 BCAA Dirty Shirley by NorthBound Nutrition

These are the 5 active ingredients this product is made of. Select any to open its full monograph.

Serving size6.15 Gram(s) Dosage formPowder Servings per container25 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.

Taurine

Interacts with
173 drugs
1 Gram(s) per serving

Taurine is an amino acid your body makes naturally and that you also get from animal foods. It is widely used in energy drinks and sports supplements,...

Taurine monograph & interactions

Erythritol

4 Gram(s) per serving

Instantized BCAAs

5 Gram(s) per serving
  • › L-Leucine
  • › L-Isoleucine
  • › L-Valine

Other (inactive) ingredients: Natural flavors, Citric Acid, Organic Stevia, Silica. These complete the product’s ingredient list but are not active constituents.

Interaction report

BCAA Dirty Shirley by NorthBound Nutrition Drug Interactions

Want to check YOUR meds against BCAA Dirty Shirley?

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
173Drugs
173 Moderate

Ingredients driving the most interactions

Taurine 173

Individual Drug Interactions

The ingredients in BCAA Dirty Shirley interact with 173 drugs. Click any drug to see the details.

1 of the 5 ingredients in BCAA Dirty Shirley interact with drugs. Each result below shows which ingredient is responsible. Taurine

Each ingredient & the kinds of drugs it affects

For each ingredient in BCAA Dirty Shirley 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.

Taurine2 drug types · 173 drugs

Antihypertensive Drugs

Theoretically, taurine might increase the risk of hypotension when taken with antihypertensive drugs.
Some clinical evidence suggests that taurine can reduce both systolic and diastolic blood pressure.

Likelihood Probable Evidence D
Lithium

Theoretically, taurine might reduce excretion and increase plasma levels of lithium.
Taurine is thought to have diuretic properties, which might reduce the excretion of lithium.

Likelihood Probable Evidence D
Taurine full monograph & interactions
The maker

Brand information

Manufacturer and brand details for BCAA Dirty Shirley, from the product label.

NorthBound Nutrition

See all NorthBound Nutrition products
Name
Northbound Nutrition
City
Granbury
State
TX
ZipCode
76048
Web Address
northboundnutrition.com
Pharmacist Counseling Corner

BCAA Dirty Shirley by NorthBound Nutrition: Common Questions

Does BCAA Dirty Shirley by NorthBound Nutrition interact with any medications?
Yes. Based on its ingredients, BCAA Dirty Shirley has a known interaction with 173 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
BCAA Dirty Shirley contains 5 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.
Can I take this while pregnant or breastfeeding?
Taurine, the active ingredient in this product with pregnancy data, is rated likely safe during pregnancy. For breastfeeding, taurine is naturally present in breast milk, but supplement safety hasn't been well studied — talk with your doctor or pharmacist about whether it's right for you.
What side effects might I notice?
The most common side effects from taurine are constipation, diarrhea, and indigestion. Serious allergic reactions are rare but can happen, especially if you're sensitive to sulfites or sulfa drugs. If you develop symptoms of an allergic reaction, stop and contact your healthcare provider.
Does this actually work for muscle recovery?
We don't have effectiveness data in our records for the individual BCAAs in this powder, so we can't tell you whether they work for that purpose based on the facts we hold. Taurine itself is rated possibly effective for heart health and hepatitis, but not for weight loss.
How long is it safe to use?
Taurine is generally well tolerated for up to one year in typical doses. Long-term safety is less certain, so if you're planning to take this long-term or at high doses, use it only under medical guidance.
Is there anything else in here besides the amino acids?
Yes — the powder also contains natural flavors, citric acid, organic stevia, and silica as inactive ingredients to add flavor and help the powder mix.

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

Not sure if BCAA Dirty Shirley is safe with your meds?

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Ask a pharmacist

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.

BCAA Dirty Shirley label
Go deeper

The Full Monographs Behind BCAA Dirty Shirley’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Taurine

Interacts with 173 drugs

Taurine is an amino acid your body makes naturally and that you also get from animal foods. It is widely used in energy drinks and sports supplements, and short-term use appears generally sa...

Read the full Taurine monograph →
Sources

Sources & How We Checked

BCAA Dirty Shirley'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 21 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.

Taurine 21 references
  1. Ahmad S, Robertson HT, Golper TA, et al. Multicenter trial of L-carnitine in maintenance hemodialysis patients. II. Clinical and biochemical effects. Kidney Int 1990;38:912-8. PubMed
  2. Machado-Vieira R, Viale CI, Kapczinski F. Mania associated with an energy drink: the possible role of caffeine, taurine, and inositol. Can J Psychiatry 2001;46:454-5. PubMed
  3. Obermann M, Schorn CF, Mummel P, et al. Taurine induced toxic encephalopathy? Clin Neurol Neurosurg 2006;108:812-3. PubMed
  4. Bichler, A., Swenson, A., and Harris, M. A. A combination of caffeine and taurine has no effect on short term memory but induces changes in heart rate and mean arterial blood pressure. Amino Acids 2006;31(4):471-476. PubMed
  5. Iyadurai, S. J. and Chung, S. S. New-onset seizures in adults: possible association with consumption of popular energy drinks. Epilepsy Behav 2007;10(3):504-508. PubMed
  6. Berger, A. J. and Alford, K. Cardiac arrest in a young man following excess consumption of caffeinated "energy drinks". Med J Aust. 1-5-2009;190(1):41-43. PubMed
  7. Worthley, M. I., Prabhu, A., De, Sciscio P., Schultz, C., Sanders, P., and Willoughby, S. R. Detrimental effects of energy drink consumption on platelet and endothelial function. Am J Med 2010;123(2):184-187. PubMed
  8. Morchon, Simon D. and Perez Castrillon, J. L. [Hypoglycemia by intake of taurine]. Rev.Clin Esp. 2010;210(1):49.
  9. Livshits, Z., Hoffman, R. S., Hymes, K. B., and Nelson, L. S. If vitamins could kill: massive hemolysis following naturopathic vitamin infusion. J Med Toxicol. 2011;7(3):224-226. PubMed
  10. Schoffl, I., Kothmann, J. F., Schoffl, V., Rupprecht, H. D., and Rupprecht, T. "Vodka energy": too much for the adolescent nephron? Pediatrics 2011;128(1):e227-e231. PubMed
  11. Calabro, R. S., Italiano, D., Gervasi, G., and Bramanti, P. Single tonic-clonic seizure after energy drink abuse. Epilepsy Behav 2012;23(3):384-385. PubMed
  12. Fujita, T., Ando, K., Noda, H., Ito, Y., and Sato, Y. Effects of increased adrenomedullary activity and taurine in young patients with borderline hypertension. Circulation 1987;75(3):525-532. PubMed
  13. Darling, P. B., Lepage, G., Leroy, C., Masson, P., and Roy, C. C. Effect of taurine supplements on fat absorption in cystic fibrosis. Pediatr Res 1985;19(6):578-582. PubMed
  14. Fukuyama, Y. and Ochiai, Y. Therapeutic trial by taurine for intractable childhood epilepsies. Brain Dev. 1982;4(1):63-69. PubMed
  15. Franconi, F., Bennardini, F., Mattana, A., Miceli, M., Ciuti, M., Mian, M., Gironi, A., Anichini, R., and Seghieri, G. Plasma and platelet taurine are reduced in subjects with insulin-dependent diabetes mellitus: effects of taurine supplementation. Am.J. DOI
  16. Stohs SJ, Miller M. A case study involving allergic reactions to sulfur-containing compounds including, sulfite, taurine, acesulfame potassium and sulfonamides. Food Chem Toxicol. 2014 Jan;63:240-3. PubMed
  17. Sun Q, Wang B, Li Y, Sun F, et al. Taurine supplementation lowers blood pressure and improves vascular function in prehypertension: randomized, double-blind, placebo-controlled study. Hypertension 2016 Mar;67(3):541-9. PubMed
  18. Jang ES, Hwang SH, Kim JW, Jeong SH. Effectiveness of 4-week oral taurine treatment for muscle cramps in patients with liver cirrhosis: a single-arm pilot study. Yonsei Med J 2021;62(1):21-8. PubMed
  19. Guan L, Miao P. The effects of taurine supplementation on obesity, blood pressure and lipid profile: A meta-analysis of randomized controlled trials. Eur J Pharmacol 2020;885:173533. PubMed
  20. Higgins JP, Liras GN, Liras IN, et al. Energy Drink Effects on Hemodynamics and Endothelial Function in Young Adults. Cardiology. 2021;146(2):258-262. PubMed
  21. Pallangyo P, Bhalia SV, Komba M, et al. Acute Myocardial Infarction Following the Consumption of Energy Drink in a 28-Year-Old Male: A Case Report. J Investig Med High Impact Case Rep. 2023 Jan-Dec;11:23247096231168811. PubMed

See these in context on the Taurine monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

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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