Choosing fish oil for pets: rTG vs TG vs EE — what really affects absorption?

Form matters (TG/rTG often absorb better than EE), but dosage (EPA+DHA), oxidation control, and how you feed it usually matter more.

## Quick takeaway

- **EE (ethyl ester)** often requires extra digestion steps.

- **TG** resembles natural fish oil.

- **rTG** is a re-structured TG form that can deliver high EPA/DHA while keeping a TG-like structure.

## What to prioritize

1. Clear EPA/DHA label (not just “1000 mg fish oil”)

2. Third-party testing (heavy metals + oxidation metrics)

3. Storage and freshness

4. Start low, give with meals, adjust by stool/skin response