Safety Rating: Acceptable
L-threonine is rated Acceptable by Chowmark — an amino acid ingredient. It is generally considered safe in pet food when used at appropriate levels.
| Product | Brand | Score |
|---|---|---|
| Hill's Prescription Diet k/d Kidney Care Dry Dog Food 27.5 lb | Hill’s Prescription Diet | 73/100 — Good |
| Prescription Diet k/d Feline Pâté with Tuna | Hill's | 63/100 — Fair |
| Adult Chicken & Brown Rice Recipe | Heritage Ranch by H-E-B | 52/100 — Fair |