Manufacturers
- K-Link International
- K-mart
- K.C. Herb Product Ltd. H.K.
- K2 Incense
- Kaboom Action Strips
- Kaged Muscle
- Kaizedo
- KAL
- KALA Health BV
- Kala Health Inc.
- Kalchem International
- Kali Muscle
- Kallistia
- Kam Yuen Medicine Company
- Kami Sante
- Kamsut Inc dba The Kama Sutra Company
- Kan Herb Company
- Kancor Ingredients Ltd
- Kanec USA Inc.
- Kaneka North America, LLC
- Kanematsu Wellness Corporation
- Kangniling (KNL) Pharmaceutical Company
- Kankaisten Öljykasvit Ltd
- Kaplan Laboratory, LLC
- Kappa Nutrition
- KaraMD, Inc.
- Kare & Hope Inc.
- Kare ~N~ Herbs
- KareMor International
- Karuna Corporation
- Kashi Company
- Kat's Naturals
- Katalyst Nutraceuticals
- Katz Group
- Kaya Naturals
- Kaymall
- Kayson Hong Enterprises Limited
- Kaz, Inc.
- KBS Research, Inc., LLC
- KDA Global LLC
- KE Health
- Kee Sun Enterprises Inc
- Kei Two Communications
- Kellogg's
- Kemin Industries, Inc.
- Kemol Ventures Ltd
- Kempo LLC
- Kendy Canada Products Limited
- Kenko Zoshin Co Ltd
- Kenkoukazoku Co Ltd
- Kenote Marketing Ltd.
- Kenwood Therapeutics
- Kenzayu Inc
- Ketality, LLC
- Keto Bodytone
- Ketolabs
- KetoLogic, LLC
- Ketologie LLC
- Ketond Nutrition
- Ketone Advanced
- KetoneAid Inc
- Ketonedrops.com Inc
- Ketopharm USA
- KetoSports, Inc.
- Kevis Rejuvenation Programs, Inc.
- KeVita
- Kewlify
- Key Nutrients
- Key Therapeutics, LLC
- Key2Health, Inc.
- Keyview Labs, Inc.
- Khaolaor Laboratories Co., LTD.
- Khroma Herbal Products
- Kibow Biotech, Inc.
- kidsWellness
- Kikkoman Nutricare Japan Inc.
- Kill Cliff, Inc.
- Kilo Labs
- KiloSports Nutrition
- Kimera Koffee
- Kin Euphorics
- Kin Kwok Trading Co
- King Bio Inc.
- King ELV
- King Fisher Media
- King Nutrition
- King Triple Eight Manufacturing and Distribution
- Kingdom Honey
- KingFisher Media, LLC
- KingPin Concepts
- Kingsbro Investments Ltd.
- Kingsway Trading Inc
- Kinobody
- Kinray
- Kion, LLC
- Kip Solutions LLC
- Kiriko, LLC
- Kirkland Signature
- Kirkman Laboratories
- Kiss Me Organics LLC
- Kiss My Face
- Kiss My Keto
- KJ Performance Nutrition, LLC
- Klaire Laboratories
- Klean Athlete
- KleenIq
- Klein-Becker
- KMS
- KNH Online Inc.
- Knight Pill
- Knight-McDowell Labs
- Knowledge Products
- Knowles Enterprises
- Knox
- Kodiak Cakes
- Kodiak Labs
- Kodiak Nutrition
- Koech Corp
- Koehler
- Koge Canada Inc
- Koios
- Kolmar BNH Co., LTD.
- KonaRed
- KonPharma
- Konsar Future Nutrition Suppliers And Distributors Inc
- Konscious LLC
- Konsyl Pharmaceuticals
- Kordel's
- Kordial Nutrients
- Korea Ginseng Corp.
- Korea Pharma Co.
- KOS Inc.
- Kowa Company Ltd
- Kowa Health Care America, Inc
- KPN Group
- Kraft
- Kraft Canada Inc
- Kraken Kratom
- Kramer-Novis
- Krazzy Rhino Group
- Krewel Meuselbach GmbH
- Krill Doctor
- Kripps Pharmacy
- Krka
- Kroeger Herb Products Co., Inc.
- Kroger
- Kuhnil Pharm
- Kukamonga Bienestar y Salud
- Kuli Kuli, Inc.
- Kumato Labs
- Kunming Dali Industry & Trade Co. Ltd.
- Kunnath Pharmaceuticals
- Kurashiikiiki Co., Ltd.
- KwangChow First Chinese Medicine Factory
- Kwangchow Pharmaceutical Industry Co.
- Kweilin Drug Manufactory
- Kyani Inc
- Kyowa Hakko U.S.A., Inc.
