Both hydrogencarbonate and metal hydroxides are used to control over production of acid in the stoma...........

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Both hydrogencarbonate and metal hydroxides are used to control over production of acid in the stomach. However, metal hydroxides are a better alternative than hydrogencarbonate because

1.Excessive hydrogencarbonate can make the stomach alkaline and trigger the production of even more acid.

2.Metal hydroxides are readily soluble in stomach acid and help increase the pH of the stomach above neutrality.

Which of the above is/are correct ?

1 only

2 only

Both 1 and 2

None

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Explanation:

Over production of acid in the stomach causes irritation and pain. In severe cases, ulcers are developed in the stomach.
Until 1970, only treatment for acidity was administration of antacids, such as sodium hydrogencarbonate or a mixture of aluminium and magnesium hydroxide.
However, excessive hydrogencarbonate can make the stomach alkaline and trigger the production of even more acid. Metal hydroxides are better alternatives because of being insoluble, these do not increase the pH above neutrality.
These treatments control only symptoms, and not the cause. Therefore, with these metal salts, the patients cannot be treated easily.