Hello you should eat after work out your Omega3 with some food for  better absorption.  Don't eat during workout.  Multivitamins you can have another time.

We need details about your meals and nutrition options and lifestyle then we can discuss things further suggest anything plz choose direct consultation for proper guidance and help

Hello, Better Not to take it together.

Hi I would recommend you to take a food as your first medicine. Multivitamin contain vitamins and minerals which are micronutrients and are required in very small quantity in your body. You can surely cover your vitamins and minerals through the diet itself. May be for a time you can take multivitamin if you're feeling that you not able to keep check on diet due to some reason but not for long as it may have adverse effects on your health. I would recommend you to meet any expert or me for a counselling session so that you can know how you can include the vitamins snd minerals through your diet. If you wanna connect with me you can opt for a personal chat option or call me or WhatsApp me at the number mentioned on my Practo profile. I work online globally I will be doing your counselling through Skype or zoom, it will be 45 minute to 50 minute session. If you want to get more educated about diet, health, nutrition then you can follow me on Instagram. My Instagram handle name is @dietitianVidhi