The word "methadrine" is spelled with the IPA phonetic transcription /mɛθədrin/. This transcription breaks down the word into its individual sounds, starting with the consonant blend /mɛ/ and adding the fricative sound /θ/ and vowel sound /ə/ before ending with the consonant cluster /drin/. The spelling of this word follows standard English conventions for spelling out the sounds of a word phonetically. It is important to use the correct spelling of words like "methadrine" to ensure clear communication and accurate understanding.