Cartouche Pod RePuff Ma Petite Vape 1% de nicotine The flavoring and not the nicotine content is a decisive factor for the effects of refill liquids of electronic cigarette on the redox status of endothelial cells ScienceDirect Recently, there's been some confusion on the amount of nicotine in e liquids. The problem comes from the difference between freebase nicotine and nicotine salts. Freebase nicotine is the purest form of nicotine. Does the Nicotine Level in e Liquids Affect the Flavor? eJuiceDirect