Laudanum would represent an equivalent daily dose of between 180 mg and 480 mg of morphine. Today, morphine and codeine are available in various forms as single formulation products, which are easier to dose and are much cheaper than opium tincture. Thus, opium is rarely prescribed to treat pain in contemporary medicine. Further, opium tincture contains 17-to-19% alcohol, by volume, which may complicate its use as an analgesic in patients for whom alcohol is contraindicated. Extreme caution is advised when administering doses of Tincture of Opium. Doses should be carefully measured using an oral syringe or calibrated dropper. Apothecary measurements should
Drug eruption there is a complex interplay between a patient's inherited genetics, the pharmacotoxicology of the drug and the immune response that ultimately give rise to the manifestation of a drug eruption. Because the manifestation of a drug eruption is complex and highly individual, there are many subfields in medicine that are studying this phenomenon. For example, the field of pharmacogenomics aims to prevent the occurrence of severe adverse drug reactions by analyzing a person's inherited genetic risk. As such, there are clinical examples of inherited genetic alleles that are known to predict drug hypersensitivities and for which diagnostic testing is available.