L-Theanine and CBD are two ingredients owners come across again and again when they compare chews for dogs, and the names alone do not tell you much. This article sets out what each one is, where it comes from and how it is regulated. It does not compare what they do, and it is not a guide to your dog’s behaviour — if something about how your dog behaves worries you, your vet is the right first call, and a behaviourist may follow.
L-Theanine: A Natural Amino Acid
L-Theanine is an amino acid that occurs naturally in tea leaves, particularly green tea, and the material used in supplements is generally produced by fermentation. It has a long history of use in food for people and in feed for animals. There is no authorised health claim for L-Theanine in Great Britain, so we describe what it is and how much of it is in each chew rather than what it does.
CBD: A Different Kind of Ingredient
CBD, or cannabidiol, is a compound extracted from the hemp plant. In the UK it sits under a different regulatory regime from ordinary feed and food ingredients, and the stated concentration, purity and labelling vary a good deal between brands. Biotic’s Gain chews do not contain CBD. If you are considering a CBD product for your dog, raise it with your vet before you buy.
What Is in Our Chew
Biotic’s Gain Dog Calming Treats contain L-Theanine, and the full ingredient list and the amount per chew are printed on the pack. They are a complementary feed, fed alongside a complete diet rather than in place of it, and the daily amount is set by your dog’s body weight. As above, there is no authorised health claim for L-Theanine in Great Britain, so what we can tell you is what is in the chew, not what it will do for your dog.
Where to Buy
Biotic’s Gain Dog Calming Treats with L-Theanine are available now on Amazon.
Biotic’s Gain chews are complementary pet feed, given alongside a complete, balanced diet. They are not medicines and are not a substitute for veterinary advice. If your dog is unwell, on medication or has an ongoing condition, speak to your vet.



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