Heroin Withdrawal Symptoms
Heroin is a potent opioid drug that, when smoked, snorted, or injected, binds to the opioid receptors in the brain and makes chemical changes that produce feelings of euphoria but also change the way the brain controls the heart rate, and pain, pleasure, breathing and sleeping. The brain becomes dependent on having the heroin in the body and begins to be unable to function normally without it (dependence), leading to compulsive heroin use and addiction.