CanPrev CanPrev - Magnesium Sleep, 120 vcap
CanPrev Magnesium Sleep Gaba & Melatonin - Extra Gentle magnesium form with melatonin and GABA, this formulation is designed to help people relax, reset their circadian biological clocks, get better sleep while reducing the time needed to fall asleep for people with delayed sleep phase disorder. This proprietary magnesium-glycine complex provides a therapeutic 125mg of magnesium bis-glycinate, 100mg of GABA (gamma-aminobutyric acid) and 2.5mg of melatonin as natural sleep aids with every vegetable capsule.

Price
Regular Canadian retail price: $33.98 CAD. Price Vault members pay below retail on this product. Member pricing is private and shown after a free opt-in, with no membership fee, no minimum order and no subscription.
In stock. Free shipping across Canada on orders over $89, flat $9.95 under that. 30 days to request a return, with return shipping paid by the customer. Ships from Victoria, BC.
Why people keep reordering it
- Highly absorbable forms
- Chelated forms your body takes up, instead of oxide that mostly passes through.
- Calm and recovery
- Supports muscle relaxation, sleep quality and everyday stress resilience.
- Gentle on digestion
- Formulated to skip the laxative effect of cheaper magnesium.
Best suited to: someone who takes melatonin but wants magnesium alongside it, people with a sensitive stomach who react to other magnesium forms, someone whose sleep schedule has drifted, like shift workers or jet lag.
What the research supports
Each vegetable capsule delivers 125 mg of magnesium as the bisglycinate (glycinate) form, along with 100 mg of GABA and 2.5 mg of melatonin. This is a combination formula meant to help you wind down at night, not a straight magnesium repletion product. The glycinate form is chosen specifically because it is gentle on digestion compared to oxide or citrate.
The 2.5 mg of melatonin sits at the higher end of the 0.5 to 3 mg range most sleep-onset studies use, so this leans toward a stronger nightly dose rather than a starter one. The 125 mg of elemental magnesium is on the low side of the 200 to 400 mg typically used in magnesium sleep and relaxation trials, so here it functions as a supporting ingredient rather than the main event.
- falling asleep faster (evidence: moderate, from human rct, meta-analysis)
- Melatonin supplementation has consistent evidence for reducing sleep onset time, particularly for circadian rhythm disruption like jet lag or delayed sleep phase.
- muscle and nervous system relaxation (evidence: moderate, from human rct)
- Magnesium supports normal nerve and muscle function and is used in relaxation-focused formulas, though the evidence is strongest at doses higher than the 125 mg here.
- calming effect from GABA (evidence: limited, from small human trial)
- Oral GABA has a hard time crossing into the brain, so evidence for relaxation from swallowed GABA is mostly small human trials with inconsistent results.
Read the literature: falling asleep faster on PubMed, muscle and nervous system relaxation on PubMed, calming effect from GABA on PubMed.
Is it right for you
Worth it if
- someone who takes melatonin but wants magnesium alongside it
- combines 2.5 mg melatonin with 125 mg magnesium bisglycinate in one capsule instead of stacking two bottles
- people with a sensitive stomach who react to other magnesium forms
- bisglycinate is bound to glycine and is generally easier on the gut than magnesium oxide or citrate
- someone whose sleep schedule has drifted, like shift workers or jet lag
- melatonin at 2.5 mg is used to help reset circadian timing, which is the specific use case named for this formula
Look elsewhere if
- someone who just wants a plain magnesium supplement for muscle cramps or general intake
- a straight magnesium bisglycinate or citrate product without melatonin would let you dose it any time of day
- someone trying to correct a real magnesium deficiency
- look for a product delivering 200 to 400 mg of elemental magnesium per serving, since 125 mg here is a modest amount
- someone sensitive to melatonin who gets grogginess or vivid dreams
- a lower-dose melatonin product, 0.5 to 1 mg, or a magnesium-only formula without melatonin would be gentler
What to expect
Melatonin at this dose typically shortens the time it takes to fall asleep within the first few nights of use, most noticeably if your sleep schedule has shifted. The magnesium and GABA are lower-dose supporting ingredients, so their contribution to relaxation is subtler and builds with consistent nightly use rather than being felt as a standalone effect.
How it compares
- Compared with plain magnesium glycinate capsules
- this adds 2.5 mg melatonin and 100 mg GABA specifically aimed at falling asleep faster, which a plain magnesium product does not offer The tradeoff: you cannot take it during the day the way you could with a standalone magnesium supplement, since the melatonin makes it a nighttime-only product
- Compared with a basic melatonin-only sleep aid
- pairs melatonin with magnesium bisglycinate and GABA for a broader relaxation effect rather than melatonin alone The tradeoff: the magnesium dose here is too low to also serve as your main magnesium source, so you may still need a separate magnesium product for that purpose
Product details
- Active ingredient
- CanPrev - Magnesium Sleep
- Ingredient form
- vcap
- Servings per container
- 120
- Country of manufacture
- Canada
- Independent testing
- independent laboratories
- Certifications
- Non-GMO, Made in Canada
- Storage
- Store in a cool, dry place
- Brand
- CanPrev
How to take it
Take 1 to 2 capsules daily with food, or as directed by your healthcare practitioner.
- Store in a cool, dry place away from direct light.
- Keep out of reach of children.
- Consult a practitioner if you are pregnant, nursing or on medication.
Interactions and cautions
- Medications
- May reduce absorption of certain antibiotics and thyroid medication.
- Timing
- Separate from medications by 2 to 4 hours unless directed otherwise by a healthcare practitioner.
- Pregnancy and breastfeeding
- Consult a healthcare practitioner before use if pregnant or breastfeeding.
- General
- Use only as directed. Discontinue and consult a practitioner if you experience an adverse reaction.
This product is not intended to diagnose, treat, cure or prevent disease. Consult a healthcare practitioner before use. Free certified advisors are available at 1-888-386-1211, Mon to Fri, 9am to 5pm PT.
Questions about CanPrev - Magnesium Sleep
- Is this the genuine, authentic product?
- Yes. It is identical to what you would pay full price for anywhere else, sourced through our authorized supplier relationships.
- How is the price below retail?
- We buy direct, with nobody in the middle taking a cut, and we sell it for close to what we paid. You see the price privately because you have unlocked the Vault.
- How fast does it ship?
- Orders placed before 12pm PT are processed the same day and ship within two business days. Shipping is free over $89, and a flat $9.95 under that.
- Can I return it?
- You have 30 days after it arrives to request a return. Product must be unused, in its original packaging, with proof of purchase, and return shipping is paid by you. Find it cheaper anywhere in Canada and we will match the price.