Two published studies looked at magnesium and sleep. One compared magnesium with a placebo. The other followed magnesium intake and sleep over time.
The 2025 trial:
4 weeks
placebo-controlled
double-blind
randomized
Magnesium and sleep
In a clinical trial, researchers measured changes in how people rated their sleep. A larger observational study looked at the relationship between magnesium intake and sleep duration.
PLACEBO-CONTROLLED TRIAL · 2025
Improvement in self-reported sleep.
Researchers randomly assigned 155 adults who reported poor sleep to magnesium bisglycinate or a placebo. Those in the magnesium group took 250 mg of elemental magnesium each day for four weeks.
Change in sleep questionnaire score
The chart shows the adjusted change in Insomnia Severity Index (ISI) scores after four weeks. A taller bar means a larger drop in the score, which indicates improvement.
−2.3
−3.9
PlaceboMagnesium bisglycinate
Placebo: −2.3
Magnesium bisglycinate: −3.9
Magnesium: −3.9 points (95% CI −5.8 to −2.0). Placebo: −2.3 points (−4.1 to −0.4). The effect was small (Cohen’s d = 0.2; p = 0.049).
Participants reported their own sleep over four weeks. The study used a different supplement and dose from HAVN1, so these aren't clinical results for our finished product.
Higher magnesium intake was linked to lower odds of short sleep.
The study included 3,964 CARDIA participants. Those with the highest magnesium intake had lower adjusted odds of reporting less than seven hours of sleep than those with the lowest intake.
Adjusted odds ratio for short sleep
The chart compares the highest and lowest quartiles of magnesium intake. The lowest quartile is the reference at 1.00. These odds describe an association, not how well a product works.
1.00
0.64
Lowest intake quartileHighest intake quartile
Lowest intake quartile: 1.00
Highest intake quartile: 0.64
Adjusted odds ratio: 0.64 (95% CI 0.51 to 0.81) for short sleep, defined as less than seven hours.
Magnesium came from both food and supplements. The study can't establish cause and effect, and it didn't test HAVN1 or any particular form of magnesium.
Take three capsules once daily. Here's how much magnesium you get and how the servings add up to a 30-night supply.
Elemental magnesium
275 mg
You get this amount of magnesium in each daily serving.
Magnesium glycinate
2,500 mg
This is the amount of the chelated ingredient that provides your elemental magnesium.
Capsules once daily
3
Take one serving a day, following the label directions.
Servings per bottle
30
Each bottle holds 90 capsules. That's 30 nights.
Melatonin
0 mg
Melatonin-free support for restful sleep and relaxation.
Why magnesium glycinate?
In this chelated form, magnesium is bound to an amino acid called glycine. You might also see it called bisglycinate. HAVN1 uses this highly bioavailable form to support restful sleep, calm and muscle relaxation.
The 2,500 mg of magnesium glycinate in each serving provides 275 mg of elemental magnesium and approximately 2.2 g of glycine, both of which come from the same ingredient rather than separate added doses.
Your daily serving
Formula detail
HAVN1
Magnesium glycinate
2,500 mg
Provides elemental magnesium
275 mg
Capsules once daily
3
Melatonin
None
The full ingredient list
Our label names one active ingredient and four other ingredients. You can read about each one below.
Magnesium glycinate
The active ingredient. Three capsules provide 275 mg of elemental magnesium from 2,500 mg of magnesium glycinate. HAVN1 uses it to support restful sleep, calm and muscle relaxation.
Hypromellose
The capsule shell. Our label lists hypromellose as the capsule material. The finished formula is vegetarian and vegan friendly.
Magnesium stearate
Other ingredient. You'll find magnesium stearate in the other-ingredients list. The 275 mg of elemental magnesium declared per serving comes from magnesium glycinate.
Silicon dioxide
Other ingredient. Silicon dioxide is one of the four other ingredients on the label. We list all four alongside the active ingredient so you can see the full formula.
Rice flour
Other ingredient. Rice flour is the last of the four other ingredients on the label. The full list is hypromellose, magnesium stearate, silicon dioxide and rice flour.
Does it fit your dietary needs?
HAVN1 is melatonin-free, vegan friendly and free of major allergens. The formula is third-party tested, and the dietary details are listed below.
Melatonin-free
Mineral support for your routine. HAVN1 contains no melatonin. Its magnesium glycinate formula supports restful sleep, calm and relaxation, and is non-habit-forming.
Vegan friendly
Vegetarian, too. Our supplier identifies the formula as vegetarian and vegan friendly. The capsule shell is hypromellose.
Free of major allergens
Gluten-free · Lactose-free · Corn-free. Our supplier lists the formula as free of major allergens, gluten-free, lactose-free and corn-free. Check the full ingredient list to see whether it suits your dietary needs.
Non-GMO
Third-party tested. Our supplier identifies the formula as Non-GMO. Its compliance documents also list Magnesium Glycinate as third-party tested. You can request a certificate of analysis.
Make room for rest.
HAVN1 Sleep Capsules
Take three capsules once daily for 275 mg of elemental magnesium. HAVN1 supports restful sleep and calm without melatonin, as part of your evening routine.
Do not exceed the recommended dose. Pregnant or nursing mothers, children under 18, and anyone with a known medical condition should consult a physician before use. Keep out of reach of children.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
