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Rainwood Magnesium Bisglycinate Capsules are designed for supplement brands seeking a clearly specified magnesium supplement for private-label development. The proposed formulation uses magnesium bisglycinate as the primary magnesium source, with a target of 100–200 mg elemental magnesium per daily serving. A 120-capsule bottle with a proposed two-capsule daily serving provides a 60-day supply. Final capsule fill weight, elemental magnesium content, magnesium source composition, and packaging specifications are subject to raw material verification and formulation confirmation.
Parameter |
Specification |
|---|---|
Product Name |
Magnesium Bisglycinate Capsules |
Ingredient |
Magnesium Bisglycinate |
Dosage Form |
Hard Capsules |
Primary Magnesium Source |
Magnesium Bisglycinate, subject to verification |
Target Elemental Magnesium |
100–200 mg per daily serving, proposed |
Suggested Serving Concept |
2 capsules daily, subject to final review |
Capsule Count |
120 capsules per bottle |
Proposed Supply Duration |
60 days at 2 capsules daily |
Flavor |
Unflavored |
Packaging Options |
Moisture-protective HDPE/PET bottle or aluminum foil blister |
Secondary Packaging |
Optional carton |
Customization |
Formula and packaging options subject to feasibility confirmation |
Target Customers |
Supplement brands, private-label businesses, and e-commerce sellers |
Rainwood Magnesium Bisglycinate Capsules are developed for supplement brands seeking a magnesium supplement with clearly defined ingredient specifications and serving information.
The proposed formulation uses magnesium bisglycinate as the primary magnesium source. The target daily serving provides 100–200 mg of elemental magnesium, with the final capsule fill weight determined by the verified magnesium content of the selected raw material and the overall formulation.
For accurate product labeling, the weight of magnesium bisglycinate should be distinguished from the amount of elemental magnesium it provides. This distinction helps brand owners communicate product strength more clearly and reduces confusion when consumers compare products with different serving sizes and ingredient specifications.
The proposed retail format contains 120 capsules per bottle, with a two-capsule daily serving concept corresponding to a 60-day supply. Final serving instructions must be confirmed through formulation review and applicable label requirements.
Rainwood can evaluate moisture-protective bottle or blister packaging options according to the product requirements. Raw material identity, elemental magnesium content, capsule capacity, source composition, and batch consistency should be established before the final product specification is approved.
Final ingredient quantities, capsule fill weight, packaging configuration, and quality claims are subject to confirmation.

Clearly Defined Elemental Magnesium
The proposed formulation targets 100–200 mg of elemental magnesium per daily serving. Final content should be calculated using verified raw material specifications and appropriate analytical data.
Magnesium Bisglycinate as the Primary Source
The product concept uses magnesium bisglycinate as its primary magnesium source. Any claim regarding full chelation or the absence of additional magnesium sources must be supported by the actual formulation and technical documentation.
Transparent Serving Information
A proposed two-capsule daily serving and 120-capsule bottle format correspond to a 60-day supply, helping brand owners communicate the serving schedule and pack value clearly.
Flexible Packaging Options
Moisture-protective HDPE/PET bottles and aluminum foil blister packaging can be evaluated according to the intended product format, shelf-life requirements, and manufacturing feasibility.
Quality Documentation
Raw material specifications, batch COA, elemental magnesium content, identity testing, and relevant contaminant data should be reviewed as part of product qualification.
Private-Label Development
Formula specifications, capsule configuration, packaging, and labeling requirements can be evaluated according to the brand's needs and confirmed manufacturing capabilities.
Private-label magnesium supplement capsules
Magnesium bisglycinate supplement product lines
Mineral supplement formulations with clearly specified elemental magnesium
Retail supplement products requiring transparent serving information
Customized capsule and packaging development for supplement brand
For product qualification, brand owners should review the applicable raw material specifications and batch Certificate of Analysis (COA).
Relevant quality parameters may include magnesium identity and content, the composition of the magnesium source, capsule fill-weight consistency, microbiological limits, heavy metals, and other risk-based contaminant requirements.
The elemental magnesium value should be distinguished from the total weight of the magnesium-containing compound. If the formulation includes magnesium oxide or another magnesium source, the ingredient declaration and product description should reflect the actual composition.
Finished-product testing and packaging compatibility should be established according to the final formulation, packaging material, intended shelf life, and destination market.
Specific test methods, acceptance limits, certifications, and quality claims should be confirmed against current supplier documentation and finished-product data before publication.

Q1. What is magnesium bisglycinate?
Magnesium bisglycinate is a chelated magnesium compound associated with glycine. The exact identity and composition of the selected ingredient should be confirmed through supplier documentation.
Q2. What is the difference between magnesium bisglycinate and elemental magnesium?
Magnesium bisglycinate refers to the magnesium-containing compound, whereas elemental magnesium refers to the amount of magnesium itself. The two values are not interchangeable and should be presented separately where appropriate.
Q3. How much elemental magnesium does each serving provide?
The proposed target is 100–200 mg of elemental magnesium per daily serving. The final amount will depend on the selected raw material, capsule configuration, and approved formula.
Q4. Does the formulation contain magnesium oxide?
The product concept identifies magnesium bisglycinate as the primary magnesium source. Whether magnesium oxide or another magnesium source is present must be confirmed against the final ingredient formula and supplier documentation.
Q5. How many capsules are included in each bottle?
The proposed retail format contains 120 capsules per bottle. At two capsules daily, the bottle provides 60 daily servings.
Q6. What packaging options can be considered?
Moisture-protective HDPE/PET bottles and aluminum foil blister packaging are proposed options, subject to manufacturing feasibility and packaging compatibility assessment.
Q7. What quality documents should brand owners request?
Relevant documents may include the COA, raw material specifications, elemental magnesium data, identity testing, source composition information, and applicable microbiological and contaminant test results.
Q8. Can the product be customized for private-label brands?
Formula specifications, capsule configuration, and packaging options can be evaluated according to the brand's requirements and confirmed manufacturing capabilities.