Drug & supplement interaction

Gamma-aminobutyric Acid (gaba) + Cefaclor

Cefaclor brand names: Ceclor CD, Ceclor.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Oct 4, 2026
The bottom line No known interaction

We found no known interaction between Gamma-aminobutyric Acid (gaba) and Cefaclor 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 Cefaclor states a food rule worth keeping to, and the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Gamma-aminobutyric Acid (gaba) and Cefaclor

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 Cefaclor and Gamma-aminobutyric Acid (gaba) 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.

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.

Gamma-aminobutyric Acid (gaba) safety at a glance

Gamma-aminobutyric... overall Use caution Often well tolerated short-term, but long-term safety is not well studied.
Pregnancy Avoid Not enough safety information; avoid unless your doctor advises otherwise.
Breastfeeding Avoid Not enough safety information; best to avoid while breastfeeding.

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

Still wondering about combining Cefaclor and Gamma-aminobutyric Acid (gaba)? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Cefaclor

Interactions in our licensed database are recorded against drug classes, not just single drug names. Cefaclor is filed under 6 classifications — including organic anion transporter 3 (oat3) substrates, organic anion transporter 1 (oat1) substrates, antibiotic drugs. Gamma-aminobutyric Acid (gaba) has documented interactions with 2 drug classes — the most serious being antihypertensive drugs (moderate) and cns depressants (minor) — and none of Cefaclor’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Gamma-aminobutyric Acid (gaba) Does Interact With Other Medications

Gamma-aminobutyric Acid (gaba) has 172 moderate, 247 minor known drug interactions in our database — Cefaclor isn’t one of them. If you take anything else, check it against the full list below.

Moderate 172 Minor 247 No known interaction 2,411 (incl. Cefaclor)
Taking anything else?

Check Another of Your Medications Against Gamma-aminobutyric Acid (gaba)

Covers the 2,830 medications we’ve checked against Gamma-aminobutyric Acid (gaba). Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests Gamma-aminobutyric Acid (gaba) and Cefaclor May Share Several of the Same Side Effects

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do.

  • Changes to your period Additional detail

    Gamma-aminobutyric Acid (gaba)

    “In one study, one patient treated with oral GABA and phosphatidylserine reported transient amenorrhea.”

    Gamma-aminobutyric Acid (gaba) · Natural Medicines adverse-effect record, reported in amenorrhea.

    1 source cited
    1. 19364. Loeb C, Benassi E, Bo, GP, et al. Preliminary evaluation of the effect of GABA and phosphatidylserine in epileptic patients. Epilepsy Res. 1987;1:209-12 . PubMed

    Cefaclor

    Listed in the ADVERSE REACTIONS section of the FDA label for Cefaclor. Read the label on DailyMed ›

  • Drowsiness Additional detail

    Gamma-aminobutyric Acid (gaba)

    “Orally, GABA may cause drowsiness, headache, or tiredness. Four children with cerebral palsy taking GABA had convulsions, and an unspecified number experienced motor restlessness. However, causality of these adverse effects was not clear, and the dose of GABA was not specified. Intravenously, GABA 50 mg has been associated with a "lack of alertness" in healthy female volunteers.”

    Gamma-aminobutyric Acid (gaba) · Natural Medicines adverse-effect record, reported in cerebral palsy.

    5 sources cited
    1. 5115. Cavagnini F, Invitti C, Pinto M, et al. Effect of acute and repeated administration of gamma aminobutyric acid (GABA) on growth hormone and prolactin secretion in man. Acta Endocrinol (Copenh) 1980;93:149-54.
    2. 19364. Loeb C, Benassi E, Bo, GP, et al. Preliminary evaluation of the effect of GABA and phosphatidylserine in epileptic patients. Epilepsy Res. 1987;1:209-12 . PubMed
    3. 112830. de Bie TH, Witkamp RF, Balvers MG, Jongsma MA. Effects of ?-aminobutyric acid supplementation on glucose control in adults with prediabetes: A double-blind, randomized, placebo-controlled trial. Am J Clin Nutr 2023;118(3):708-719. PubMed
    4. 19362. Gershman RN, Vasilenko MA, Iliushina GG, et al. [Gammalon in the rehabilitation in infantile cerebral palsy]. Pediatr.Akus.Ginekol. 1977;(6):26-7.
    5. 51159. Melis, G. B., Paoletti, A. M., Mais, V., and Fioretti, P. Interference of dopamine infusion on gamma-amino butyric acid (GABA)-stimulated prolactin increase. J.Endocrinol.Invest 1980;3(4):445-448.

    Cefaclor

    Listed in the ADVERSE REACTIONS section of the FDA label for Cefaclor. Read the label on DailyMed ›

  • Anxiety or restlessness Additional detail

    Gamma-aminobutyric Acid (gaba)

    “Intravenously, GABA 0.1-1.0 mg/kg has been shown to induce anxiety, dysphoria, and mood disturbances in a dose-dependent manner.”

    Gamma-aminobutyric Acid (gaba) · Natural Medicines adverse-effect record, reported in anxiety.

    1 source cited
    1. 5116. Nurnberger JI Jr, Berrettini WH, Simmons-Alling S, et al. Intravenous GABA administration is anxiogenic in man. Psychiatry Res 1986;19:113-7. PubMed

    Cefaclor

    Listed in the ADVERSE REACTIONS section of the FDA label for Cefaclor. Read the label on DailyMed ›

  • Reduced appetite / Constipation Additional detail

    Gamma-aminobutyric Acid (gaba)

    “Orally, minor throat burning has been associated with GABA in one study. In another study in which GABA was administered with phosphatidylserine, one patient experienced severe gastric distress, two patients reported moderate nausea, and one reported constipation. Children with cerebral palsy taking GABA experienced nausea and decreased appetite.”

    Gamma-aminobutyric Acid (gaba) · Natural Medicines adverse-effect record, reported in cerebral palsy.

    3 sources cited
    1. 5115. Cavagnini F, Invitti C, Pinto M, et al. Effect of acute and repeated administration of gamma aminobutyric acid (GABA) on growth hormone and prolactin secretion in man. Acta Endocrinol (Copenh) 1980;93:149-54.
    2. 19364. Loeb C, Benassi E, Bo, GP, et al. Preliminary evaluation of the effect of GABA and phosphatidylserine in epileptic patients. Epilepsy Res. 1987;1:209-12 . PubMed
    3. 19362. Gershman RN, Vasilenko MA, Iliushina GG, et al. [Gammalon in the rehabilitation in infantile cerebral palsy]. Pediatr.Akus.Ginekol. 1977;(6):26-7.

    Cefaclor

    Listed in the ADVERSE REACTIONS section of the FDA label for Cefaclor. Read the label on DailyMed ›

  • Tiredness / Headache Additional detail

    Gamma-aminobutyric Acid (gaba)

    Recorded for Gamma-aminobutyric Acid (gaba) in the same Natural Medicines adverse-effect record shown under Drowsiness above.

    Cefaclor

    Listed in the ADVERSE REACTIONS section of the FDA label for Cefaclor. Read the label on DailyMed ›

  • Nausea Additional detail

    Gamma-aminobutyric Acid (gaba)

    Recorded for Gamma-aminobutyric Acid (gaba) in the same Natural Medicines adverse-effect record shown under Drowsiness above.

    Cefaclor

    Listed in the ADVERSE REACTIONS section of the FDA label for Cefaclor. Read the label on DailyMed ›

Reported for Gamma-aminobutyric Acid (gaba) but not commonly for Cefaclor: muscle weakness and seizures.

Effects for Cefaclor come from the ADVERSE REACTIONS section of its FDA label; effects for Gamma-aminobutyric Acid (gaba) come from the Natural Medicines adverse-effect record, quoted above. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

How to take them

Some Cefaclor Products Have a Food Rule — Gamma-aminobutyric Acid (gaba) Should Not Break It

At least one FDA label for a product containing Cefaclor says to take it with food. If you take Gamma-aminobutyric Acid (gaba) on an empty stomach out of habit, keep them separate — and take Cefaclor with a meal where the label says to.

This may not be true of your version. Food instructions belong to the product, not the ingredient: two Cefaclor 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.

DOSAGE AND ADMINISTRATION The absorption of cefaclor extended-release tablets is enhanced when it is administered with food.

From the Dosage and Administration section of the FDA label we read for Cefaclor — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›

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.

Overlapping uses

What Cefaclor Is Prescribed For, and What Gamma-aminobutyric Acid (gaba) Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Cefaclor is a prescription medicine with approved uses on its FDA label. Gamma-aminobutyric Acid (gaba) is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.

Cefaclor is prescribed for: Cefaclor treats a range of bacterial infections. The capsule and oral suspension forms are used for ear infections (otitis media), lower respiratory tract infections including pneumonia, strep throat and tonsillitis, urinary tract infections (including kidney infections and bladder infections), and skin and skin structure infections. The extended-release tablet form of Cefaclor is approved for a narrower set of uses: acute bacterial flare-ups of chronic bronchitis, strep throat and tonsillitis, and uncomplicated skin infections. Not all infections approved for the capsule or suspension are approved for the extended-release tablet — your prescriber will choose the right form for your infection.

Gamma-aminobutyric Acid (gaba) has been studied for:

  • Chronic bronchitis studied, not established Gamma-aminobutyric Acid (gaba) has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    Gamma-aminobutyric Acid (gaba) for chronic bronchitis

    It is unclear if oral GABA is beneficial for chronic bronchitis.

Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Cefaclor on your own; if you are taking Gamma-aminobutyric Acid (gaba) for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

Everything else you take

See Every Supplement That Interacts With Cefaclor

This page covers Gamma-aminobutyric Acid (gaba) only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Cefaclor page lists 60 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Asarabacca (major), Siberian Cocklebur (major), African Wild Potato (moderate) and Aristolochia (moderate).

By severity: 3 major · 46 moderate · 11 minor.

From our pharmacist’s overview on the Cefaclor page

“The entries worth understanding before any others on this cefaclor (Ceclor) page are the kidney risks and charcoal. Cefaclor is a cephalosporin antibiotic, typically a short course for ear, sinus, throat, or skin infections, and two herbs here, Siberian cocklebur and asarabacca, can damage the kidneys on their own, so pairing either wi…”

Reviewed by 2 · Jul 18, 2026

Open the Cefaclor interaction page

One more smart check

Taking Gamma-aminobutyric Acid (gaba) as Part of a Dietary Supplement Product? Check It for Interactions

We hold 1,760 real supplement products containing Gamma-aminobutyric Acid (gaba), each one broken down to its full ingredient list — and combination products often carry several ingredients besides Gamma-aminobutyric Acid (gaba). Even though Gamma-aminobutyric Acid (gaba) itself has no known interaction with Cefaclor, 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 Gamma-aminobutyric Acid (gaba) and Cefaclor 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 Gamma-aminobutyric Acid (gaba)
Top 10%

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

29 days ago today
Medication Cefaclor
Top 10%

#274 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 Gamma-aminobutyric Acid (gaba) reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified October 4, 2026. The Gamma-aminobutyric Acid (gaba) and Cefaclor 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 Gamma-aminobutyric Acid (gaba)

What is Gamma-aminobutyric Acid (gaba)?

Gamma-aminobutyric Acid (gaba)
  • Anxiety and stress
  • Sleep problems
  • Relaxation
  • High blood pressure
  • Mood support

GABA is a calming chemical messenger (neurotransmitter) that your body makes on its own, and it is sold as a supplement for stress, anxiety, and sleep. The science behind oral GABA supplements is limited and mixed, partly because it is unclear how much swallowed GABA actually reaches the brain. It is generally well tolerated short-term, but talk with a pharmacist or doctor before using it, especially if you are pregnant, breastfeeding, or take other medicines.

Not a plant; an amino acid/neurotransmitter (made naturally in the body and produced for supplements by fermentation) · Capsules, tablets, powders, chewable tablets, gummies, drink mixes

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

Gamma-aminobutyric Acid (gaba): dosing

There is no official or standardized dose for GABA supplements. Amounts used in studies have varied widely, and there is not enough strong evidence to recommend a specific dose.The safest approach is to follow the directions on the product label and start with the lowest suggested amount.

From our Gamma-aminobutyric Acid (gaba) monograph — the full record covers uses, side effects and every documented interaction.

Read the full Gamma-aminobutyric Acid (gaba) monograph & all interactions
Medication

About Cefaclor

What Is Cefaclor Used For?

Brand names: Ceclor CD, Ceclor

Cefaclor treats a range of bacterial infections. The capsule and oral suspension forms are used for ear infections (otitis media), lower respiratory tract infections including pneumonia, strep throat and tonsillitis, urinary tract infections (including kidney infections and bladder infections), and skin and skin structure infections.

The extended-release tablet form of Cefaclor is approved for a narrower set of uses: acute bacterial flare-ups of chronic bronchitis, strep throat and tonsillitis, and uncomplicated skin infections. Not all infections approved for the capsule or suspension are approved for the extended-release tablet — your prescriber will choose the right form for your infection.

Most-Reported Side Effects for Cefaclor

From FAERS, the FDA’s public side-effect reporting system (1,535 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Drug hypersensitivity 252 reports
Nausea 159 reports
Vomiting 159 reports
Fatigue 137 reports
Fever 121 reports
See full Cefaclor drug information
Keep checking

Other Drugs & Gamma-aminobutyric Acid (gaba)

Browse every other medication we’ve checked against Gamma-aminobutyric Acid (gaba) — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
172Moderate
247Minor
2,410No known interaction
172 Moderate 247 Minor 2,410 No interaction
Moderate

172 interactions

Showing 60 of 172 moderate interactions — see all 172 on the Gamma-aminobutyric Acid (gaba) page.

Minor

247 interactions

Showing 60 of 247 minor interactions — see all 247 on the Gamma-aminobutyric Acid (gaba) page.

No interaction 2,410 drugs checked — show the list

We also checked Gamma-aminobutyric Acid (gaba) against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,410 medications checked with no known interaction — see the full Gamma-aminobutyric Acid (gaba) list.

See the full Gamma-aminobutyric Acid (gaba) interactions page
See every supplement checked against Cefaclor, ranked by severity
Evidence & sources

Gamma-aminobutyric Acid (gaba) References

The 12 references that drive our Gamma-aminobutyric Acid (gaba) 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. Cavagnini F, Invitti C, Pinto M, et al. Effect of acute and repeated administration of gamma aminobutyric acid (GABA) on growth hormone and prolactin secretion in man. Acta Endocrinol (Copenh) 1980;93:149-54.
  2. Nurnberger JI Jr, Berrettini WH, Simmons-Alling S, et al. Intravenous GABA administration is anxiogenic in man. Psychiatry Res 1986;19:113-7. PubMed
  3. Gershman RN, Vasilenko MA, Iliushina GG, et al. [Gammalon in the rehabilitation in infantile cerebral palsy]. Pediatr.Akus.Ginekol. 1977;(6):26-7.
  4. Loeb C, Benassi E, Bo, GP, et al. Preliminary evaluation of the effect of GABA and phosphatidylserine in epileptic patients. Epilepsy Res. 1987;1:209-12 . PubMed
  5. Inoue K, Shirai T, Ochiai H, et al. Blood-pressure-lowering effect of a novel fermented milk containing gamma-aminobutyric acid (GABA) in mild hypertensives. Eur J Clin Nutr 2003;57:490-95.
  6. ELLIOTT, K. A. and JASPER, H. H. Gammaaminobutyric acid. Physiol Rev. 1959;39(2):383-406.
  7. Winsky-Sommerer, R. Role of GABAA receptors in the physiology and pharmacology of sleep. Eur.J.Neurosci. 2009;29(9):1779-1794.
  8. Meldrum, B. S. GABAergic mechanisms in the pathogenesis and treatment of epilepsy. Br.J.Clin.Pharmacol. 1989;27 Suppl 1:3S-11S. PubMed
  9. Loeb, C., Marinari, U. M., Benassi, E., Besio, G., Cottalasso, D., Cupello, A., Maffini, M., Mainardi, P., Pronzato, M. A., and Scotto, P. A. Phosphatidylserine increases in vivo the synaptosomal uptake of exogenous GABA in rats. Exp.Neurol. 1988;99(2):4 PubMed
  10. Melis, G. B., Paoletti, A. M., Mais, V., and Fioretti, P. Interference of dopamine infusion on gamma-amino butyric acid (GABA)-stimulated prolactin increase. J.Endocrinol.Invest 1980;3(4):445-448.
  11. Boonstra E, de Kleijn R, Colzato LS, Alkemade A, Forstmann BU, Nieuwenhuis S. Neurotransmitters as food supplements: the effects of GABA on brain and behavior. Front Psychol. 2015 Oct 6;6:1520. doi: 10.3389/fpsyg.2015.01520. eCollection 2015. PubMed
  12. de Bie TH, Witkamp RF, Balvers MG, Jongsma MA. Effects of ?-aminobutyric acid supplementation on glucose control in adults with prediabetes: A double-blind, randomized, placebo-controlled trial. Am J Clin Nutr 2023;118(3):708-719. 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 Gamma-aminobutyric Acid (gaba) and Cefaclor Together: Common Questions

Is it safe to take Gamma-aminobutyric Acid (gaba) with Cefaclor?
We do not list a known interaction between Gamma-aminobutyric Acid (gaba) and Cefaclor. 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.
Do Gamma-aminobutyric Acid (gaba) and Cefaclor have any of the same side effects?
Yes — our sources link each of them separately to 8 of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
Should I take Gamma-aminobutyric Acid (gaba) and Cefaclor at the same time of day?
At least one FDA label for a product containing Cefaclor says to take it with food. If you take Gamma-aminobutyric Acid (gaba) on an empty stomach out of habit, keep them separate and take Cefaclor with a meal where the label says to. Food instructions belong to the product rather than the ingredient — two Cefaclor products can differ — so check the directions on your own box. This is about absorption, not an interaction.
Are Gamma-aminobutyric Acid (gaba) and Cefaclor used for the same thing?
They overlap in purpose, which usually means the real question is whether you need both rather than whether they are safe together. This page lists the shared uses and how strong the evidence is for Gamma-aminobutyric Acid (gaba) in each. That is a conversation for your prescriber, especially if Cefaclor is being adjusted to a target.
How was the Gamma-aminobutyric Acid (gaba) and Cefaclor combination checked?
Interactions in our licensed database are recorded against drug classes. Cefaclor is filed under 6 classifications, and Gamma-aminobutyric Acid (gaba) has documented interactions with 2 drug classes — none of Cefaclor's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Gamma-aminobutyric Acid (gaba) interact with any other medications?
Yes. Gamma-aminobutyric Acid (gaba) has 419 documented drug interactions in our database — Cefaclor is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Cefaclor interact with any supplements?
Yes. Cefaclor has documented interactions with 60 supplements in our database — Gamma-aminobutyric Acid (gaba) is not one of them. The Cefaclor 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

Gamma-aminobutyric Acid (gaba) monograph Uses, safety profile, and every drug interaction in one place Cefaclor drug information The full plain-English guide to this medication Cefaclor supplement interactions Every supplement checked against Cefaclor, 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 12 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Cefaclor and Gamma-aminobutyric Acid (gaba)?

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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.