Reaction to certain medications. 1  Environmental irritants. 2  Poor oral hygiene. 3  Tobacco exposure or alcohol consumption. 4  Candida yeast infection (Oral Thrush) 5  Tongue inflammation, such as Glossitis. 6  Spicy foods such as habanero and jalapeÃ±o peppers contain compounds in the peppers that are correlated with white tongue.
Heroin (diacetylmorphine) is used for treatment of severe acute pain (such as severe acute pain due to myocardial infarction or heart attack, end stage cancer pain, post surgical pain, terminal illnesses etc.) in some countries (such as United Kingdom), as strong analgesic.
Methadone has long been used for the treatment of heroin addiction. It is a long-acting opioid that is substituted for the shorter-acting drug. Methadone stays active in the bloodstream for an entire day in most cases, meaning that less of the drug will need to be taken at a time.