Drug & supplement interaction

Beta-alanine + Dicloxacillin Injection

Dicloxacillin Injection brand name: Dynapen Injection.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Beta-alanine and Dicloxacillin Injection in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the label for Dicloxacillin Injection states a food rule worth keeping to.

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Interaction report

Beta-alanine and Dicloxacillin Injection

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

No Known Interaction Found

We did not find a documented interaction between Dicloxacillin Injection and Beta-alanine in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

Worth understanding: our licensed dataset holds no drug-interaction record for Beta-alanine at all — not against Dicloxacillin Injection, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

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

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

Beta-alanine safety at a glance

Beta-alanine overall Use caution Generally well tolerated in healthy adults, but it commonly causes harmless skin tingling and is not studied for long-term high doses.
Pregnancy Avoid There is not enough safety information, so it is best to avoid during pregnancy.
Breastfeeding Avoid There is not enough safety information, so it is best to avoid while breastfeeding.

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

Still wondering about combining Dicloxacillin Injection and Beta-alanine? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Beta-alanine Itself Has Been Linked To

This is not an interaction — nothing below involves Dicloxacillin Injection. It is the side-effect record for Beta-alanine on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Beta-alanine, this list is the first place to look.

  • Flushing / Numbness or tingling Additional detail

    “Orally, beta-alanine can cause a dose-dependent feeling of pins and needles (paresthesias) along with skin flushing. This generally starts on the scalp within 20 minutes of the dose, spreading to most of the body, and lasting for about an hour. This was described as severe at a dose of 40 mg/kg, tolerable at a dose of 20 mg/kg, and very mild at a dose of 10 mg/kg.”

    Beta-alanine · Natural Medicines adverse-effect record, reported in myasthenia gravis.

    6 sources cited
    1. 16438. Harris RC, Tallon MJ, Dunnett M, et al. The absorption of orally supplied beta-alanine and its effect on muscle carnosine synthesis in human vastus lateralis. Amino Acids 2006;30:279-89.
    2. 94333. Bellinger PM, Minahan CL. The effect of ß-alanine supplementation on cycling time trials of different length. Eur J Sport Sci 2016;16(7):829-36.
    3. 94335. Chung W, Shaw G, Anderson ME, et al. Effect of 10 week beta-alanine supplementation on competition and training performance in elite swimmers. Nutrients 2012;4(10):1441-53. PubMed
    4. 94338. Glenn JM, Gray M, Stewart R, et al. Incremental effects of 28 days of beta-alanine supplementation on high-intensity cycling performance and blood lactate in masters female cyclists. Amino Acids 2015;47(12):2593-600. PubMed
    5. 94341. Gross M, Bieri K, Hoppeler H, Norman B, Vogt M. Beta-alanine supplementation improves jumping power and affects severe-intensity performance in professional alpine skiers. Int J Sport Nutr Exerc Metab 2014;24(6):665-73. PubMed
    6. 94342. Howe ST, Bellinger PM, Driller MW, Shing CM, Fell JW. The effect of beta-alanine supplementation on isokinetic force and cycling performance in highly trained cyclists. Int J Sport Nutr Exerc Metab 2013;23(6):562-70. PubMed

Everything above comes from the Natural Medicines adverse-effect record for Beta-alanine — expand a row for the licensed statement it rests on. We read the ADVERSE REACTIONS section of Dicloxacillin Injection’s FDA label too, and the two lists don’t meaningfully overlap — which is why no Dicloxacillin Injection column appears here.

How to take them

Some Dicloxacillin Injection Products Have a Food Rule — Beta-alanine Should Not Break It

At least one FDA label for a product containing Dicloxacillin Injection says to take it on an empty stomach. Most supplements — Beta-alanine included — are taken with a meal, so the easy mistake is swallowing both together at breakfast. Where that rule applies, keep Dicloxacillin Injection on its own and move Beta-alanine to a meal later in the day.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Dicloxacillin Injection products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.

Patients weighing less than 40 kg (88 lbs) DRUG ADULTS CHILDREN Mild to Moderate Severe Mild to Moderate Severe Dicloxacillin 125 mg every 6 hours 250 mg every 6 hours 12.5 mg/kg/day 1 in equally divided doses every 6 hours 25 mg/kg/day 1 in equally divided doses every 6 hours Dicloxacillin is best absorbed when taken on an empty stomach, and should be administered at least 1 hour before or 2 hour

From the Dosage and Administration section of the FDA label we read for Dicloxacillin Injection — where that label names a specific product, the instruction is that product's.

A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.

Everything else you take

See Every Supplement That Interacts With Dicloxacillin Injection

This page covers Beta-alanine only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Dicloxacillin Injection page lists 39 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Asarabacca (major), Siberian Cocklebur (major), Aristolochia (moderate), Bacillus Coagulans (moderate) and Bacillus Subtilis (moderate).

By severity: 2 major · 35 moderate · 2 minor.

From our pharmacist’s overview on the Dicloxacillin Injection page

“Dicloxacillin Injection (Dynapen) is a penicillin antibiotic used against serious bacterial infections, and this list earns real caution, chiefly for its two major-rated entries. Siberian cocklebur and asarabacca can each damage the kidneys, and pairing them with other kidney-stressing substances risks compounding that harm, so I would…”

Reviewed by 2 · Jul 18, 2026

Open the Dicloxacillin Injection interaction page

One more smart check

Taking Beta-alanine as Part of a Dietary Supplement Product? Check It for Interactions

We hold 3,759 real supplement products containing Beta-alanine, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Beta-alanine. Even though Beta-alanine itself has no known interaction with Dicloxacillin Injection, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Beta-alanine and Dicloxacillin Injection Sit Against Everything Else

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

Supplement Beta-alanine
Top 5%

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

29 days ago today
Medication Dicloxacillin Injection
Steady interest

#1,675 of 2,830 medications looked up here in the last 7 days

29 days ago today

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

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Beta-alanine reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Beta-alanine and Dicloxacillin Injection records this page draws on were last updated July 10, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Beta-alanine

What is Beta-alanine?

  • Athletic performance and endurance
  • High-intensity exercise capacity
  • Reducing muscle fatigue
  • Building muscle carnosine levels

Beta-alanine is an amino acid taken mostly by athletes to raise muscle carnosine, which may help buffer acid and reduce fatigue during short, high-intensity exercise. The evidence is moderate for performance in certain activities, but harmless tingling of the skin is common, and it is not well studied for pregnancy or any medical condition.

Non-essential amino acid (made in the body and found in meat, poultry, and fish) · Capsules, tablets, powder, pre-workout blends, sustained-release tablets

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

Beta-alanine: dosing

There is no official medical dose for beta-alanine, and the right amount depends on the product and your goals. Many supplements come as powders or capsules, sometimes as sustained-release tablets meant to reduce tingling.Beta-alanine usually needs to be taken consistently for several weeks before muscle carnosine builds up enough to matter — a single dose before a workout does not provide much benefit.

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

Read the full Beta-alanine monograph & all interactions
Keep checking

Other Drugs & Beta-alanine

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

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

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

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Beta-alanine list.

See the full Beta-alanine interactions page
See every supplement checked against Dicloxacillin Injection, ranked by severity
Evidence & sources

Beta-alanine References

The 13 references that drive our Beta-alanine monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Harris RC, Tallon MJ, Dunnett M, et al. The absorption of orally supplied beta-alanine and its effect on muscle carnosine synthesis in human vastus lateralis. Amino Acids 2006;30:279-89.
  2. Hill CA, Harris RC, Kim HJ, et al. Influence of beta-alanine supplementation on skeletal muscle carnosine concentrations and high intensity cycling capacity. Amino Acids 2007;32:225-33.
  3. Bellinger PM, Minahan CL. The effect of ß-alanine supplementation on cycling time trials of different length. Eur J Sport Sci 2016;16(7):829-36.
  4. Chung W, Shaw G, Anderson ME, et al. Effect of 10 week beta-alanine supplementation on competition and training performance in elite swimmers. Nutrients 2012;4(10):1441-53. PubMed
  5. Glenn JM, Gray M, Stewart R, et al. Incremental effects of 28 days of beta-alanine supplementation on high-intensity cycling performance and blood lactate in masters female cyclists. Amino Acids 2015;47(12):2593-600. PubMed
  6. Gross M, Bieri K, Hoppeler H, Norman B, Vogt M. Beta-alanine supplementation improves jumping power and affects severe-intensity performance in professional alpine skiers. Int J Sport Nutr Exerc Metab 2014;24(6):665-73. PubMed
  7. Howe ST, Bellinger PM, Driller MW, Shing CM, Fell JW. The effect of beta-alanine supplementation on isokinetic force and cycling performance in highly trained cyclists. Int J Sport Nutr Exerc Metab 2013;23(6):562-70. PubMed
  8. Sweeney KM, Wright GA, Glenn Brice A, Doberstein ST. The effect of beta-alanine supplementation on power performance during repeated sprint activity. J Strength Cond Res 2010;24(1):79-87.
  9. Décombaz J, Beaumont M, Vuichoud J, Bouisset F, Stellingwerff T. Effect of slow-release ß-alanine tablets on absorption kinetics and paresthesia. Amino Acids 2012;43(1):67-76. Erratum in: Amino Acids 2013;45(4):1015.
  10. Stellingwerff T, Anwander H, Egger A, et al. Effect of two ß-alanine dosing protocols on muscle carnosine synthesis and washout. Amino Acids 2012;42(6):2461-72. PubMed
  11. da Silva RP, de Oliveira LF, Saunders B, et al. Effects of ß-alanine and sodium bicarbonate supplementation on the estimated energy system contribution during high-intensity intermittent exercise. Amino Acids. 2019;51(1):83-96. PubMed
  12. Varanoske AN, Hoffman JR, Church DD, et al. Comparison of sustained-release and rapid-release ß-alanine formulations on changes in skeletal muscle carnosine and histidine content and isometric performance following a muscle-damaging protocol. Amino Acids. PubMed
  13. Perim P, Gobbi N, Duarte B, et al. Beta-alanine did not improve high-intensity performance throughout simulated road cycling. Eur J Sport Sci 2021. PubMed

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

Pharmacist Counseling Corner

Taking Beta-alanine and Dicloxacillin Injection Together: Common Questions

Is it safe to take Beta-alanine with Dicloxacillin Injection?
We do not list a known interaction between Beta-alanine and Dicloxacillin Injection. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Should I take Beta-alanine and Dicloxacillin Injection at the same time of day?
At least one FDA label for a product containing Dicloxacillin Injection says to take it on an empty stomach, and supplements are usually taken with a meal — so taking them together at breakfast is the easy mistake. Where that applies, keep Dicloxacillin Injection on its own and move Beta-alanine to a meal later in the day. Food instructions belong to the product rather than the ingredient, so check the directions on your own box. This is about absorption, not an interaction.
Does Dicloxacillin Injection interact with any supplements?
Yes. Dicloxacillin Injection has documented interactions with 39 supplements in our database — Beta-alanine is not one of them. The Dicloxacillin Injection interaction page linked on this page lists every one, ranked by severity.

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

Where next

Keep Exploring

Beta-alanine monograph Uses, safety profile, and every drug interaction in one place Dicloxacillin Injection supplement interactions Every supplement checked against Dicloxacillin Injection, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 13 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Dicloxacillin Injection and Beta-alanine?

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