For osteoporosis, calcium needs are 1,000 mg daily for women under 51 and men under 71, and 1,200 mg for older adults.

The RDA for calcium is 1,000 mg daily for women 19–50 and 1,200 mg daily for women over 50, per the NIH Office of Dietary Supplements.

A standard 12 fl oz can of Pepsi Max (also sold as Pepsi Zero Sugar) contains about 38 mg of caffeine.

Breastfeeding women over 18 need about 1,000 mg of calcium daily, while teen mothers aged 14 to 18 need around 1,300 mg per day to support bone.

The amount of calcium carbonate in a Tums tablet varies by product: Regular Strength contains 500 mg, Extra Strength 750 mg, and Ultra Strength 1000 mg per chew

Decaf coffee still contains trace amounts of caffeine — roughly 2 to 7 mg per 8-ounce cup, compared to 70–140 mg in regular coffee.

Your body absorbs calcium most efficiently when you take 500 mg or less at one time. Taking more than that lowers the overall absorption rate.

For most adults with osteoporosis, total calcium intake of about 1,200 mg per day and 800 to 1,000 IU of vitamin D is the typical target.

An 8-ounce cup of brewed coffee averages about 95 mg of caffeine, but total caffeine content can range from as low as 30 mg in instant coffee.

Adults 19–50 typically need 1,000 mg of calcium and 600 IU of vitamin D daily, with requirements rising after age 50 for women and after 70.