These are the main classes of antibiotics. Most antibiotics have 2 names, the trade or brand name, created by the drug company that manufactures the drug, and a generic name, based on the antibiotic's chemical structure or chemical class. Trade names such as Keflex and Zithromax are capitalized.
Barbiturates such as Phenobarbitol or Phenobarbitone can cause depletion of calcium, folic acid, vitamin D, vitamin K, and biotin. Phenytoin such as Dilantin can deplete a wide range of nutrients including biotin, calcium, folic acid, vitamin B1, vitamin B12, vitamin D and vitamin K.
If you have never used the product (or never heard of it) Greensand is a mineral called glauconite, which is found on the ocean floor and mined for use as an organic fertilizer and soil conditioner. Greensand supplies marine potash, silica, iron oxide, magnesia, lime, phosphoric acid, and 22 trace minerals.