Momo is one of the first health stores in the area, and it's an old school health food store with a full range of products.
(0228) 462 765
Open M-F from 8 to 8 o'clock, Saturdays to 6pm
Hans- Böckler- Strasse 1, 53225 Beuel
They have a cafe and offer delivery service (also with 'abo' or subscription)
On their online store, they list a category for 'vegan' to simplify shopping for vegan products.