Vitamin D has the same effect on an alkaline system. The ideas pH range which maintains the best calcium and mineral uptake, along with the best utilization, is 6.3 to 6.5. Others include calcium citrate, calcium aspartate, calcium orotate and calcium gluconate. The best forms of calcium are pure calcium gluconate, calcium lactate, and calcium citrate. In order for the calcium to react correctly in the body to control the acid-base balance the correct type must be used.
Calcium lactate is used as a strong acidifying calcium.
The others are fairly neutral in their acid-base reaction, but are very usable calcium. Calcium taken with iron reduces the effect of both minerals. Insufficient vitamin D intake or excess phosphorus and magnesium hinders the uptake of calcium. A diet that is high either in protein, fat or sugar also affects calcium uptake. Using a very narrow band pH paper measure the pH of a fresh sample of your urine and saliva and record the results.