When Ensure markets itself to the general public the makers responsibly say it&#x27;s a supplement. But if you&#x27;re a medical professional you get the other marketing - which is clear that ensure etc can be used as a sole source of nutrition under medical supervision.  They have a variety of products to cover a variet of needs. They have ensure plus which has more calories than ensure; they have products for NG tubes; they have low protien versions; there are version for children; etc.<p><a href="http:&#x2F;&#x2F;abbottnutrition.com&#x2F;brands&#x2F;abbott-brands" rel="nofollow">http:&#x2F;&#x2F;abbottnutrition.com&#x2F;brands&#x2F;abbott-brands</a><p>The fact that they limit this marketing to registered healthcare professionals and have a bunch of caveats about &quot;under medical supervision&quot;, and Soylent doesn&#x27;t, is something you can draw your own conclusions about.<p>Some people will see this as disruptive and an example of a small nimble supplier filling a niche; other people will see it as SV pathologically avoiding reasonable regulation.