3013. Absorbents are medicines which destroy acidities in the stomach and bowels, such as magnesia, prepared chalk, &c.
3014. Alteratives are medicines which restore health to the constitution, without producing any sensible effect, such as sarsaparilla, sulphur, &c.
3015. Analeptics are medicines that restore the strength which has been lost by sickness, such as gentian, bark, &c.
3016. Anodynes are medicines which relieve pain, and they are divided into three kinds, paregorics, hypnotics, and narcotics (see these terms); camphor is anodyne as well as narcotic.
3017. Antacids are medicines which destroy acidity, such as lime, magnesia, soda, &c.