You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is The following is true of aluminium hydroxide gel except and explain in detail?
Neutralization of gastric acid (Antacids) (a) Systemic:- Sodium bicarbonate, Sod. citrate (b) Nonsystemic:- Magnesium hydroxide, Mag. trisilicate, Aluminium hydroxide gel, Magaldrate, Calcium carbonate. Aluminium hydroxide gel:- It is a bland, weak and slowly reacting antacid. On keeping it slowly polymerizes to variable extents into still less reactive forms. Thus, the ANC of a preparation gradually declines on storage. The Al3+ ions relax smooth muscle. Thus, it delays gastric emptying. Alum. hydrox. frequently, causes constipation due to its smooth muscle relaxant and mucosal astringent action. Alum. hydrox. binds phosphate in the intestine and prevents its absorption--hypophosphatemia occurs on regular use. This may: (a) cause osteomalacia (b) be used therapeutically in hyperphosphatemia and phosphate stones. Ref:- kd tripathi; pg num:-649,655