Introduction: Heroin can be adulterated with various substances that may or may not have pharmacological effects. Here we report a case series of 8 patients who presented to the emergency department after overdose with intravenous heroin preparation adulterated with the synthetic cannabinoid methyl 2-(1-(5-fluoropentyl)-1H-indazole-3-carboxamido)-3. 3-dimethylbutanoate (5F-MDMB-PINACA... https://countryscenesaddleryandpetsuppliers.shop/product-category/gift-ware/