Rugby Ferrous Sulfate 325 mg - 100 Tablets Rugby Ferrous Sulfate 5 grams (325 mg) is a natural iron supplement. Rugby Ferrous Sulfate 325 mg. contains 100 red round tablets. Frequently Asked Questions How do I get a copy of a Material Safety Data Sheet (MSDS) for a Rugby product?Most OTC products are exempt from the requirement for an MSDS because they are: pharmaceutical products in solid oral dosage forms (i.e., tablets and capsules). over-the-counter products packaged for direct consumer sale. dietary supplements. The only required MSDS are those for specified products (liquids, creams, ointments) packaged in institutional sizes. Where do I find allergen information on Rugby products?Many of Rugby's dietary supplement products already list this information on the product labeling since it is required by FDA regulations. On some dietary supplement labels, why does the strength listed on the front of the label differ from what is listed in the Supplement Facts?In those instances, the strength listed on the front of the label refers to the compound (or salt of the product.) The Supplement Facts box lists the elemental amount of that particular mineral (calcium, magnesium, iron, zinc) which is generally the value to be used when determining your daily intake (unless otherwise specified from your doctor.) Where are Rugby products manufactured?The vast majority of Rugby products are manufactured in the United States. For those manufactured elsewhere, strict controls are in place to ensure that they meet FDA Good Manufacturing Practices.