Calcium Supplements

Vitamin D3 is specified in micrograms. IU in parentheses is only for matching older artwork. A change in vitamin D3 potency changes the premix, the overage, and the finished vitamin D test.

Structure/function wording is reviewed for the destination market. In the United States, FDA has authorized a health claim relating calcium, or calcium and vitamin D, to a reduced risk of osteoporosis, with conditions of use in the agency’s guide [2]. A finished calcium result does not authorize the claim. ODS notes that trials of calcium, with or without vitamin D, do not all show fewer fractures [1]. Pregnancy intake stays in the brand’s prenatal file. This specification does not set a pregnancy or a children’s intake.

The salt weights above decide the tablet. About 1,500 mg of calcium carbonate, before excipients and coating, is the compound behind a 600 mg elemental target. Labels in this review print that target as one tablet. The finished tablet is heavier than the salt, and this file does not include a weighed tablet from those bottles. Citrate at the same elemental target is about 2,860 mg of salt. Labels in this review split it across two caplets.

ODS notes that the fraction absorbed is higher when the elemental calcium taken at one time is 500 mg or less [1]. Labels that go above that in a day repeat the serving. Two 600 mg servings and one 1,200 mg tablet are quoted separately. Directions on the carbonate labels say with food. ODS reports constipation, gas, and bloating more often with carbonate than with citrate, particularly for older adults, and describes a different salt, smaller amounts taken more often, or the dose with a meal as the responses [1].

A comparable price uses the same salt, the same elemental calcium, the same units per serving, the same companions, the same count per bottle, the same test scope, and the same order quantity.

The citrate file buys more kilograms of salt and usually more pieces. A liquid-calcium softgel adds an oil or paste and a shell at a lower elemental load per piece. No savings percentage is published from these comparisons.

There is no single calcium minimum. The quotation sets it from the dosage form, the changeover, pack materials and print run, tests, batch size, and material-purchasing terms. A pilot quantity is scoped to the trial. The ranges below come from the dosage-form pages. They are not a guaranteed lead time for a calcium formula. Material procurement and custom packaging sit outside the sample window.

Before the quotation, the brief needs the salt, the elemental target, the units per serving, and the dosage form. Taste, suspension, and the finished tablet weight are confirmed in the trial. MOQ, pack, test scope, and timing are confirmed after that trial, not from the ranges above alone.

1. The brief arrives as a concept, a reference label, or a BOM.
2. Salt, elemental calcium per serving, and dosage form are confirmed.
3. A trial checks load, process, taste or mouthfeel where the format has them, and pack.
4. The sample standard and the commercial specification are the same file.
5. Sample approval, production, and batch release follow that file.

A later change of salt, elemental target, dosage form, or pack is a new specification. A reorder repeats the locked specification. The calcium grade on the quotation includes assay, particle size, contaminant limits, and whether a later lot of the same grade can replace the first.

Manufacturing capacity states five bases, more than 81,000 m², and 12 production lines. Tablet compression is published above 12 million tablets a day. A calcium order uses the supplement lines and the slot that matches the format. The useful evidence for this project is the elemental-calcium calculation, the format trial, and batch release against the finished specification, not the floor area by itself. Credentials that can apply to a SKU are cGMP, ISO 9001, ISO 22000, HACCP, FSSC 22000, Halal, and Kosher, plus manufacturing practices aligned with 21 CFR Part 111. Facility cGMP is not an FDA product approval. The SKU document list is on certifications and compliance.

The incoming certificate covers the calcium salt, the assay, the particle-size grade, and the contaminant limits agreed for that material. It does not prove elemental calcium in the finished unit. The finished-product specification states what the batch must meet. The batch certificate reports that batch.

For a dietary supplement distributed in the United States, 21 CFR Part 111 requires specifications and verification that the batch meets them, including product manufactured abroad for that market [3]. It does not set one test list for every calcium product. The finished check names elemental calcium by the agreed method, vitamin D potency when vitamin D is on the label, and the microbiology, contaminant, and uniformity items that the format and the destination require. How to read those lines is covered in How to Read a COA.

Use the matching entry at the top of this page.

A concept brief names the destination market, the dosage form in mind, and the quantity under consideration. You receive a first read on what still has to be specified.

A formula-ready brief names the salt and grade, elemental calcium per serving, units per serving, vitamin D3, magnesium, zinc, or vitamin K if they are included, and the pack. You receive a feasibility read for that formula and that unit.

A comparison brief sends two labels or two quotations, the destination market, the order quantity, and the required tests. You receive the alignment of those specifications. Prices are compared after the salt, the elemental calcium, the unit count, and the pack match.

A note is typically answered within one business day. An NDA is available for a custom formula. The quotation itself follows once the specification and the pack are locked.