Doctor\'s Chemicals Works Ltd. Total of 2 brands are available from this manufacturer Doctor's Chemicals Works Ltd.Brands Manufactured by Doctor's Chemicals Works Ltd.Algex (Tablet) 250 mgAluminium Hydroxide + Magnesium HydroxideDoctor's Chemicals Works Ltd.Algex (Tablet) 400 mgAluminium Hydroxide + Magnesium HydroxideDoctor's Chemicals Works Ltd.