Coconut oil is safe for cats, if given in moderation.
Potential side effects include:
- Upset stomach
- Weight gain
- Allergic reaction to coconut oil
Since you've been letting your cat have small amounts without any allergic reactions, I would think it is safe to assume that he is not allergic.
Coconut oil has many benefits for cats and can be used internally or topically for a wide range of reasons:
- Treat allergies, eczema, and other skin irritations
- Moisturise dry skin
- Relieve itchiness
- Improve overall coat health
- Act as a barrier against environmental allergens and chemicals
- Cleaning skin folds
- Treat allergies
- Aid in passing hairballs
- Reduce arthritis inflammation
- Improve bad breath
- Treat mild gingivitis
- Relieve constipation
- Improve stomach health
- Fight bacterial infections
- Improve brain energy
The research that I've done suggests 1/8 to 1/2 teaspoon once or twice daily. Here's the catch, extra virgin coconut oil contains 92% saturated fat, or 117 calories per tablespoon, 14g fat and 12g saturated fat. This is a high-calorie supplement. If your cat has existing weight issues, or if he gains weight, it may become necessary to cut back, or reduce his caloric intake elsewhere.
As with anything, if you see any side effects, stop immediately and consult with your local vet.