Review this post to ensure you've implemented all the basics to promote a lower triglyceride level:
How to Lower Triglycerides
If you've implemented everything in this post for at least 4-6 weeks and haven't seen improvements then discuss using fish oil with your physician. It often takes a fish oil dose greater than 3000 mg to help lower triglycerides, so you'll want to consult your physician.
All the best,
Lisa Nelson RD
How to Lower Cholesterol in 8 Simple Steps