Amino acid analog from green tea that crosses the BBB and increases GABA, serotonin, and dopamine levels in the brain. Also modulates glutamate receptors and promotes alpha brainwave activity (relaxation without sedation).
At a glance
Class
Amino Acid Anxiolytic / Nutraceutical
Storage
Store at room temperature
Dosing
Used for mild anxiety, noise phobias, and stress
Used for feline anxiety, vet visit stress, and environmental changes
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →Safety
Behavioral responseNo routine monitoring required
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →Interactions
No documented interactions.
FAQs
Frequently asked questions
›What is L-Theanine?
L-Theanine is a amino acid anxiolytic / nutraceutical used in pets. Amino acid analog from green tea that crosses the BBB and increases GABA, serotonin, and dopamine levels in the brain. Also modulates glutamate receptors and promotes alpha brainwave activity (relaxation without sedation).
›What is L-Theanine used for in pets?
L-Theanine is used in veterinary medicine for: Used for mild anxiety, noise phobias, and stress; Used for feline anxiety, vet visit stress, and environmental changes.
›What is the L-Theanine dose for dogs?
For dogs, L-Theanine is typically dosed as follows — Used for mild anxiety, noise phobias, and stress: undefined undefined PO q12h. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›What is the L-Theanine dose for cats?
For cats, L-Theanine is typically dosed as follows — Used for feline anxiety, vet visit stress, and environmental changes: 25–50 mg/cat PO q12h. Always consult your veterinarian for a dose tailored to your pet's weight, age, and condition.
›Does L-Theanine need a prescription?
L-Theanine is available over the counter. Even so, you should consult your veterinarian before giving any medication to your pet.
Educational reference only
This information is provided for educational purposes and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian before administering any medication to your pet.
Find a vet near you →References
References
The PetCare.AI drug reference is built from 13 authoritative sources cited across 580 drug monographs.
Textbooks & handbooks — 5
- Plumb's Veterinary Drug Handbook
- Withrow & MacEwen's Small Animal Clinical Oncology
- Merck Veterinary Manual
- NRC Nutrient Requirements of Dogs and Cats
- Veterinary Pharmacology and Therapeutics (Riviere & Papich)
Clinical guidelines & consensus — 4
- ASPCA Animal Poison Control Center Guidelines
- AAHA Diabetes Management Guidelines
- ASPCA Poison Control Guidelines
- RECOVER CPR Guidelines
Journals & peer-reviewed studies — 2
- EPIC Study (J Vet Intern Med 2016)
- JVIM FAT CAT Study
Regulatory & approvals — 1
- CDSCO Veterinary Drug Approval Registry (1969–2026)
Databases — 1
- Washington State University VCPL MDR1 Database