increase in heart rate Medline Plus: Methamphetamine overdose Medline Plus: Methamphetamine overdose "Methamphetamine Overdose" http://www.nlm.nih.gov/medlineplus/ency/article/007480.htm http://www.nlm.nih.gov/medlineplus/ency/article/007480.htm http://www.nlm.nih.gov/medlineplus/ency/article/007480.htm http://www.nlm.nih.gov/medlineplus/ency/article/007480.htm "Methamphetamine Overdose" Medline Plus http://www.nlm.nih.gov/medlineplus/ency/article/007480.htm Medline Plus: Methamphetamine overdose Retrieved on 05/02/2016. Methamphetamine overdose http://www.nlm.nih.gov/medlineplus/ency/article/007480.htm