Detox symptoms can vary depending on what drugs and alcohol have been introduced into your system. There are Acute and Post Acute withdrawal symptoms that you can experience, depending on which drugs and alcohol and how much you have consumed.  Acute withdrawal is intense, lasts 3-7 days, and can be life-threatening if not detoxed properly by the correct medical professionals. Post-acute withdrawal is after the acute symptoms have passed and more latent, longer-lasting but less intense symptoms are present.