Hello and welcome to the forum
@Jarred. Glad to have you here!
No. Most flavorings found in grocery stores contain sugar, preservatives, coloring, etc. and are totally unsuitable for DIY.
Flavor Arts, The Flavor Apprentise, Inawara, Hangsen & Capella are some of the more well known flavoring companies for DIY. There are many others as well.
Since you are new to DIY may I suggest some recommended research to get you started. Kudos given to member
@dannyv45 who contributed and assembled all this information.
Dannyv45's blogs will give insight into all aspects of DYI, from steeping to what supplies to have on hand to a basic walk
through mixing your first E-
juice.
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E-Cigarette Forum - dannyv45 - Blogs
Hoosier's blogs concentrate on fine tuning your mix and give insight on additives.
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E-Cigarette Forum - Hoosier - Blogs
Boletus's blog's concentrate on formulation of nicotine bases regarding proper calculations methods for figuring Nicotine concentration as well as safety.
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E-Cigarette Forum - Boletus - Blogs
Ginger's book "E-Cigarettes 102: DIY
e-liquid" delivers an in depth easy to follow guide in the art of DYI.
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E-Cigarettes 102: DIY E-Liquid
I recommend viewing VPLive Vape Team Episode #82: DIY Safety and bookmark it for future reference. It explains safety in all aspects of DYI.
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VPLive Vape Team Episode #82: DIY Safety
The "stickies" pinned at the top of the
DIY E-Liquid Forum page will explain a lot of the how's and why's.