ZMA (Zinc + Magnesium + B6)

Synergistic combination of zinc, magnesium, and vitamin B6 designed to enhance recovery, sleep quality, and hormonal optimization

Scientific nameZinc Monomethionine/Aspartate + Magnesium Aspartate + Pyridoxine HCl FormulaZn + Mg + C8H11NO3·HCl Molecular weightVariable based on doses g/mol CAS7440-66-6, 7439-95-4, 58-56-0

75 absorption score

8 safety / 10

25 USD per month

6 documented interactions

Check it against something

Evidence level A

ZMA (Zinc + Magnesium + B6) with:

90 out of 100

Works better together Compatible. Timing differs, so follow each supplement's own window.

Check it against your whole stack →

What it does

mechanism and evidence for each claim

Enhanced sleep quality and duration

Improves deep sleep phases and overall sleep satisfaction

Magnesium promotes GABA activity while zinc supports neurotransmitter balance Evidence B-grade 30-90 minutes before bed

Optimized testosterone levels

Supports healthy testosterone production and maintenance

Zinc essential for testosterone synthesis and hormone regulation Evidence B-grade 2-8 weeks of consistent use

Enhanced recovery between training sessions

Accelerates muscle repair and reduces recovery time

Optimal sleep and hormone levels promote faster tissue repair Evidence B-grade Nightly use with improved next-day recovery

Improved strength and muscle gains

May enhance training adaptations and muscle growth

Better sleep and hormones support muscle protein synthesis Evidence C-grade 4-8 weeks of consistent use

Enhanced immune function

Supports immune system especially during intense training

Zinc critical for immune cell function and antioxidant systems Evidence A-grade 1-4 weeks of consistent use

Others take these for the same thing

Same goal, different mechanism — check any of them against this one

Creatine Monohydrate Strength & power enhancement 3-5g A 95% Calcium Bone health & muscle function 1,000-1,200 mg A 30% Melatonin Sleep support & circadian rhythm 0.5-3mg A 50% Ashwagandha Stress management & energy 300-600mg A 75% Magnesium Glycinate Superior absorption sleep & muscle support 200-600 mg A 90% L-Theanine Calm focus & stress relief 100-400mg B 90%

Every pair we checked

12 combinations scored by the engine

ZMA (Zinc + Magnesium + B6) + Copper Bisglycinate High copper intake may antagonize zinc utilization Needs attention 22

ZMA (Zinc + Magnesium + B6) + Iron Sulfate Iron supplements reduce zinc absorption Needs attention 52

ZMA (Zinc + Magnesium + B6) + Calcium Carbonate Calcium significantly reduces zinc and magnesium absorption Needs attention 70

ZMA (Zinc + Magnesium + B6) + Caffeine No documented interaction either way No known interaction 70

ZMA (Zinc + Magnesium + B6) + Creatine Monohydrate No documented interaction either way No known interaction 70

ZMA (Zinc + Magnesium + B6) + Lactase No documented interaction either way No known interaction 70

ZMA (Zinc + Magnesium + B6) + Bovine Collagen No documented interaction either way No known interaction 70

ZMA (Zinc + Magnesium + B6) + DHA No documented interaction either way No known interaction 70

ZMA (Zinc + Magnesium + B6) + Turmeric No documented interaction either way No known interaction 70

ZMA (Zinc + Magnesium + B6) + Whey Protein Enhanced muscle recovery and growth Works better together 78

ZMA (Zinc + Magnesium + B6) + Melatonin Enhanced sleep quality and recovery Works better together 86

ZMA (Zinc + Magnesium + B6) + Vitamin D3 Enhanced testosterone and immune benefits Works better together 90

Dosage

Empty stomach before bed

DailyZMA formula before bed

Standard zma15-30mg zinc, 400-450mg magnesium, 10-15mg B6

Deficiency correctionHigher doses based on individual testing

Maintenance supportLower end of standard range for ongoing use

Athlete optimizationUpper range for intense training periods

Upper limit 100 mg NIH ODS

When to expect it

First Effects1-3 nights for initial sleep quality improvements

Peak Benefits2-8 weeks for maximum hormonal and recovery benefits

Deficiency DevelopmentZinc and magnesium deficiency common in athletes

Toxicity OnsetZinc toxicity possible with >40mg daily long-term

How to measure it

$150-300

MarkerSerum zinc, RBC magnesium, B6 status (PLP)

OptimalZinc 90-150 μg/dL, RBC Mg 4.2-6.8 mg/dL

Deficient belowZinc <70 μg/dL, RBC Mg <4.2 mg/dL

FrequencyTest before starting supplementation and after 8-12 weeks

What people actually reported to the FDA

CAERS, 4 reports naming it as the suspect

Most reported effects

Abdominal discomfort 1

Cardiac arrest 1

Cardiomyopathy 1

Death 1

Loss of consciousness 1

Named as the suspect 4 reports of 5 that mention it at all

Serious outcome 78% hospitalisation, emergency room or worse

Other Serious or Important Medical Event2

Other Serious Outcome2

Visited a Health Care Provider2

Reports are voluntary and unverified — they record what someone experienced while taking something, not what the compound caused. Counts skew towards products people take a lot of, and a serious outcome is more likely to be reported than a mild one, so these are not rates. How we filter them →

Works better with

3 documented

Vitamin D

Enhanced testosterone and immune benefits

Both support testosterone production and immune function · level B

Melatonin

Enhanced sleep quality and recovery

Complementary sleep promotion through different pathways · level B

Protein

Enhanced muscle recovery and growth

ZMA supports protein synthesis machinery · level B

What not to take with ZMA (Zinc + Magnesium + B6)

3 documented

Calcium

Calcium significantly reduces zinc and magnesium absorption

Competition for absorption transporters · high significance

Iron

Iron supplements reduce zinc absorption

Mineral competition for uptake · moderate significance

Copper Excess

High copper intake may antagonize zinc utilization

Zinc-copper balance disruption · moderate significance

Medication interactions

Discuss these with a pharmacist before combining

antibiotics-tetracycline-quinolones High

ZMA reduces antibiotic absorption and effectiveness

What to do: Separate by 2-6 hours

thyroid-medications Moderate

May reduce thyroid hormone absorption

What to do: Separate timing by 4+ hours

blood-pressure-medications Minor

Magnesium may enhance hypotensive effects

What to do: Monitor blood pressure

Available forms

bioavailability compared

ZMA (Zinc Monomethionine + Mg Aspartate + B6) 75

ZMA (Zinc Monomethionine + Mg Aspartate + B6): Synergistic formula, Enhanced sleep, Hormonal support, Proven combination

Food sources

before you supplement

Oysters (100g) 16-180mg zinc (highest source) · 80

Pumpkin seeds (30g) 2-3mg zinc, 150mg magnesium · 60

Dark chocolate (30g) 65mg magnesium · 70

ZMA supplements Standard therapeutic doses · 75

Too little

deficiency signs

Zinc deficiency symptoms:
Poor immune function and frequent illness
Slow wound healing and recovery
Low testosterone and poor libido
Poor sleep quality and insomnia
Reduced strength and muscle gains
Hair loss and skin issues

Too much

toxicity signs

Zinc toxicity symptoms (>40mg daily long-term):
Copper deficiency and anemia
Nausea and gastrointestinal upset
Reduced immune function paradoxically
Interference with iron absorption
Metallic taste and appetite loss

Who benefits most

intense-training-athletes

Higher mineral needs and benefit from enhanced recovery

15-30mg zinc, 400-450mg magnesium, 10-15mg B6 before bed

sleep-quality-seekers

Magnesium and zinc combination improves sleep quality

Standard ZMA dose 30-60 minutes before bed

testosterone-optimization-males

Zinc deficiency linked to low testosterone in men

15-30mg zinc with magnesium and B6 nightly

mineral-deficient-athletes

Addresses common zinc and magnesium deficiencies

Therapeutic doses based on deficiency status

recovery-focused-athletes

Enhanced sleep and hormones support faster recovery

Standard ZMA formula taken consistently

Where to buy it

compare forms first

Look for ZMA (Zinc + Magnesium + B6) at ZMA formula before bed per serving. The form that matters here is ZMA (Zinc Monomethionine + Mg Aspartate + B6).

Find on Amazon

Affiliate link — we may earn a commission at no cost to you.

How it works

Zinc essential for testosterone synthesis and hormone regulation
Magnesium promotes GABA activity and nervous system relaxation
B6 enhances zinc and magnesium absorption and utilization
All three support protein synthesis and muscle recovery
Zinc critical for immune function and antioxidant systems
Magnesium required for ATP production and muscle relaxation

Key findings

what the evidence supports

Zinc deficiency common in athletes and linked to low testosterone
Magnesium improves sleep quality and reduces stress
Combination more effective than individual minerals alone
Must be taken on empty stomach for optimal absorption

Sources: NIH Examine.com · data reviewed 2026-08-02

Compiled by Denis, who maintains this database and holds no medical qualification — every figure here is sourced or derived, never asserted. How we calculate it →

Common questions

What are the benefits of ZMA (Zinc + Magnesium + B6)?

Documented effects: Enhanced sleep quality and duration; Optimized testosterone levels; Enhanced recovery between training sessions; Improved strength and muscle gains. Improves deep sleep phases and overall sleep satisfaction

How much ZMA (Zinc + Magnesium + B6) should you take per day?

The common daily range is ZMA formula before bed. By goal — standard zma: 15-30mg zinc, 400-450mg magnesium, 10-15mg B6; deficiency correction: Higher doses based on individual testing; maintenance support: Lower end of standard range for ongoing use; athlete optimization: Upper range for intense training periods.

When is the best time to take ZMA (Zinc + Magnesium + B6)?

Empty stomach before bed. First effects are typically reported within 1-3 nights for initial sleep quality improvements.

What are the side effects of ZMA (Zinc + Magnesium + B6)?

At excessive doses: Zinc toxicity symptoms (>40mg daily long-term):, Copper deficiency and anemia, Nausea and gastrointestinal upset, Reduced immune function paradoxically, Interference with iron absorption. Safety rating at normal doses is 8 out of 10.

What should you not take with ZMA (Zinc + Magnesium + B6)?

Separate it from Calcium, Iron, Copper Excess by two to four hours. Calcium significantly reduces zinc and magnesium absorption

Does ZMA (Zinc + Magnesium + B6) interact with medications?

Documented interactions with antibiotics-tetracycline-quinolones, thyroid-medications, blood-pressure-medications. Discuss these with a pharmacist before combining.

How much ZMA (Zinc + Magnesium + B6) is too much?

The tolerable upper intake level is 100 mg per day for adults, per NIH ODS. Above that, the risk of adverse effects rises: Zinc toxicity symptoms (>40mg daily long-term):, Copper deficiency and anemia, Nausea and gastrointestinal upset.

How do you know if you need ZMA (Zinc + Magnesium + B6)?

The marker is Serum zinc, RBC magnesium, B6 status (PLP), optimal range Zinc 90-150 μg/dL, RBC Mg 4.2-6.8 mg/dL. Common deficiency signs: Zinc deficiency symptoms:, Poor immune function and frequent illness, Slow wound healing and recovery, Low testosterone and poor libido.

Taken for

28 Sleep & Stress

Melatonin · Magnesium Glycinate · Ashwagandha

43 Performance

Caffeine · Creatine Monohydrate · Whey Protein