High ratio of Magnesium to Calcium plenty of V D, ZINC, V K  in a1/2 a teaspoon for better availability As this product is a marine product and ground very fine absorption is quick, and this needs to be taken into account with the amount you use as it is very available for the body to pick up 

Calcium Magnesium powder for children and adults that now break down in a small amount of water,

there are many reasons to take a good absorbable calcium with a high absorption magnesium Complex mineral formula. To aid in bone balance, may help with period pains, headaches, cramps and quietening the mind and so it will generally help sleep patterns if taken half an hour or less before bed. The Pot Lot Calcium Magnesium is a 250-gm powder 1/2 to one level teaspoon taken daily for adults and is recommended for active bone growing people, asthmatic, or people with high physical activity. Growing pains and teething pains are almost always a lack of Minerals.

usage average adult 1/2 a teaspoon [ more physically active please ask for advice may use 1/2 tsp morning with a tsp at night] 

child                              1/4 tsp or less -1/2 for sports active and depending on age and size 

3 gm teaspoon                              providing

Marine Calcium              1600mg - 480mg]

Marine Magnesium         1143mg - 400mg

Zinc citrate                    30.7           9.2mg   

Boron    Chelate               36.8          1.8 mg

V   K         50 mcg 

V. D           25 mcg        

apple or peach and lemon Powder   and Citric acid