Which drug group is primarily absorbed by the small intestin

Which drug group is primarily absorbed by the small intestine? Anticonvulsants Barbiturates Salicylates Xanthine derivatives

Solution

Anticonvulsants are primarily absorbed from colon and xanthine derivatives are primarily by pulmonary absorption.After oral administration,barbiturates are absorbed completely and rapidly from upper part of small intestine.Salicylates are rapidly and completely absorbed from the jejunum and small bowel when administered in aqueous solutions. However, ingestion of excessive doses does not always occur in the fasting state, so absorption and the attainment of peak plasma salicylate concentrations may be delayed by the presence of food in the stomach and by prolonged gastric emptying.So, the best answer is barbiturates.