Classification
Product TypeIngredient
Product FormChemical salt (mineral supplement ingredient; typically used in oral dosage forms)
Industry PositionNatural health product (NHP) medicinal ingredient (Schedule 1 mineral) and potential non-medicinal ingredient (filler/pH adjuster)
Market
In Canada, magnesium citrate is listed in Health Canada’s Natural Health Products Ingredients Database (NHPID) as an approved chemical name with a medicinal role (classified as a Schedule 1 mineral) and it is also listed with non-medicinal purposes (filler, pH adjuster). Finished products positioned as natural health products (for example, vitamin/mineral supplements) require Health Canada product licensing before sale and carry an 8-digit Natural Product Number (NPN) (or DIN-HM for homeopathic medicines) on the label. Canadian businesses that manufacture, package, label, or import an NHP for sale generally require a Health Canada site licence and must comply with NHP GMP requirements. Regulatory compliance (product licence, site licence, GMP, and labelling) is therefore a primary determinant of market access for magnesium-citrate-containing supplements in Canada.
Market RoleRegulated consumer and formulation market (natural health products) requiring product licensing and GMP/site-licensed operations
Domestic RoleCommon mineral-form ingredient used in licensed natural health products (vitamin/mineral supplement category) and as a permitted formulation aid (non-medicinal purposes listed in NHPID)
Specification
Physical Attributes- NHPID proper name: 2-Hydroxy-1,2,3-propanetricarboxylic acid magnesium salt.
- NHPID common names include: Magnesium citrate; Magnesium citrate tribasic; Trimagnesium dicitrate.
- NHPID CAS registry number: 7779-25-1.
Compositional Metrics- Regulatory role classification in NHPID: Schedule 1 mineral (medicinal role), with listed non-medicinal purposes (filler, pH adjuster) depending on product formulation context.
Supply Chain
Value Chain- Ingredient identity and role check against Health Canada NHPID (medicinal vs non-medicinal role, restrictions if any) → product formulation and evidence package for NHP product licence → manufacturing/packaging/labelling/importing conducted under NHP GMP by authorized parties (site-licensed where required) → distribution and sale of the finished NHP with required label elements (including NPN/DIN-HM where applicable).
Risks
Regulatory Compliance HighIn Canada, natural health products require Health Canada product licensing (with an NPN/DIN-HM on the label) to be legally sold, and sites that manufacture/package/label/import an NHP for sale generally require a site licence and must comply with NHP GMP; non-compliance can result in the product being blocked from legal sale and trigger enforcement action.Confirm ingredient status/roles in NHPID, secure product licensing before sale (NPN/DIN-HM), ensure the responsible Canadian parties hold required site licences where applicable, and implement GMP per Health Canada guidance (including supplier qualification, testing, records, and recall readiness).
Product Quality MediumPoor GMP conditions or weak supplier controls can lead to contamination/adulteration risks even when products appear to meet specifications, creating compliance and consumer-safety risk under Health Canada’s NHP GMP expectations.Use a documented quality system (QAP oversight), qualify/monitor suppliers, test against specifications, and maintain traceable records consistent with Health Canada’s NHP GMP guide (GUI-0158).
Labeling MediumCanadian labelling requirements for natural health products include specific product-number display and evolving labelling provisions with defined coming-into-force and transition timelines; misalignment increases stop-sale and relabelling risk.Build a label compliance checklist tied to Health Canada’s NHP labelling guidance and track transition dates (including the June 21, 2025 coming-into-force and the June 22, 2028 compliance horizon referenced in Health Canada guidance).
Documentation Gap MediumMisinterpreting NHPID listing as automatic approval for safety/efficacy can lead to weak submissions or non-compliant market entry decisions; NHPID is a terminology/ingredient information tool and does not, by itself, approve products for sale.Treat NHPID as an ingredient information and classification reference, then align the finished product to applicable monographs/standards where available and compile the evidence required for product licensing.
FAQ
Is magnesium citrate an acceptable natural health product ingredient in Canada?Health Canada’s Natural Health Products Ingredients Database (NHPID) contains an ingredient record for “Magnesium citrate” (CAS 7779-25-1) and lists it with a medicinal role (classified as a Schedule 1 mineral) and also with non-medicinal purposes (filler, pH adjuster), depending on how it is used in a product formulation.
Do magnesium citrate supplements need an NPN to be sold in Canada?If the finished product is a natural health product sold in Canada, Health Canada indicates it must have product licensing before marketing, and licensed products display an 8-digit Natural Product Number (NPN) (or DIN-HM for homeopathic medicines) on the label.
Do importers in Canada need a site licence for natural health products that contain magnesium citrate?Health Canada’s site-licensing guidance and the Natural Health Products Regulations indicate that importing a natural health product for sale is a regulated activity tied to site licensing and GMP expectations; a site licence is required for the site in Canada where a party imports an NHP for sale, and the activity must be conducted in accordance with GMP requirements.
What is the current Health Canada GMP guidance reference for natural health products?Health Canada’s GMP guide for natural health products (GUI-0158) states that version 4 comes into force on March 4, 2026 and replaces the prior version, providing updated guidance on complying with Part 3 (GMP) of the Natural Health Products Regulations.