[h2]Newcomers with questions:[/h2] Please take some time to read or at least scroll through the DXM Drugs-Wiki article. This should cover most things that need to be known. If the DXM Wiki did not answer your question, use the search engine. If a search does still not lead to anything that answers your question, post a new thread with the question. [h2]Rules[/h2] The site rules have to be respected here, obviously. Some clarifications: Please try to make an effort of not derailing threads by steering the discussion into another direction. This seriously hurts the organization of the DXM forum, and makes it harder for members and guests to find information (remember, you are never the only one gaining information from a discussion). [h2]Calculation of amounts of DXM in pharmaceuticals[/h2] Threads with such questions come up from time to time, unfortunately, so this needs to be addressed. All that is necessary to find out how much DXM is in a particular amount of a particular product can be found on the product label. This is very easy with products such as pills and capsules, but in the case of syrups & sprays it is slightly more demanding. Under the section "Active Ingredients" you should be able to find how much a dosage unit is (in the case of syrups it is generally one teaspoonful or 5 mL) and how much DXM (dextromethorphan hydrobromide) is in a dosage unit (usually 5-15 mg for syrups). If you want to find out how much DXM is in a given amount of a liquid product, divide the volume of said amount of product (in mL) by the volume of a dosage unit (in mL). Multiply the result by the amount of DXM per dosage unit. If you want to measure out a certain mg dose of DXM from a liquid product, divide the desired dose of DXM by the amount of DXM per dosage unit. This will give you the number of dosage units that equal the desired dose of DXM. Example: a cough syrup label states that each teaspoonful (5 mL) contains 15 mg dextromethorphan hydrobromide. A bottle contains 118 mL cough syrup. The number of dosage units (5 mL) in a bottle is 118 divided by 5, which is 23.6. Each dosage unit contains 15 mg DXM, which means that a bottle contains 23.6 multiplied by 15 mg DXM, which is 354 mg. Measuring a dose of 300 mg DXM in dosage units (teaspoonfuls) of said syrup can be done by dividing 300 by 15, which equals 20 teaspoonfuls. [h2]Calculating mg/kg doses and "plateaus"[/h2] mg/kg means milligram per kilogram of body weight. For an individual weighing 70 kg, 1.5 mg/kg will be 1.5 multiplied by 70, which is 105 mg. Weight in pounds (lb) can be converted into kilograms by multiplying by 0.45. For the approximate dosage ranges for different DXM plateaus, click here. Threads with questions about calculating doses in syrups, mg/kg dosage, and dosages for plateaus will be closed.