Flax seed and hemp seed are two plant based options of DHA and EPA. These are both excellent for general health.
Omega 3 is a type of fatty acid that is in fish oil. EPA-DHA is docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), which are in fish oil. The 1000mg part is telling you how much fish oil is in each capsule. See the Related Link.
RDA (Recommended Daily Allowances)
DRI-daily recommended intake RDA- recommended daily allowance
RDA stands for Recommended Daily Amount
It depends on where the fatty acids are derived from. Even with fish oils, the amounts of EPA and DHA can vary depending on the kind of fish used and the production methods used to make the oil.
RDA means recommended daily allowance. The RDA says how much of a nutrient is recommended for maintenance of health.
It is "Recommended Daily Allowance"
As outlined in a 2003 review in the "American Journal of Clinical Nutrition", the conversion of ALA (Alpha-Linolenic Acid) to EPA (Eicosapentaenoic Acid) and thence to DHA (Docosahexaenoic Acid) is quite poor under normal circumstances, so EPA and DHA are now considered essential fatty acids, of EFAs. For optimal cardiovascular protection, the American Heart Association recommends that you consume from 0.5 to 1.8 g of EPA plus DHA, and from 1.5 to 3 g of ALA daily. You should also consume around 15 g of LA (Linoleic Acid) daily, according to a 2010 review in "Current Opinion in Clinical Nutrition and Metabolic Care". Read more: http://www.livestrong.com/article/397671-dosage-requirements-for-essential-fatty-acids/#ixzz1dtMnrtqk ... the needed balance of the Essential Fatty Acids is 5 (five) Omega-6 to 1 (one) Omega-3. This is the Omega-6 to Omega-3 balance. But, what is needed to counteract all the negative effects of eating the normal Western diet is about 1:2. For every one portion of Omega-6 you eat, you will need 2 portions of Omega-3 An optimum amount of essential fatty acid has been suggested as 3 to 6% of our daily calorie intake. Read more: http://www.mcvitamins.com/essential%20fatty%20acids.htm
RDA (Recommended Daily Allowances)
Eicosapentaenoic acid (EPA) and Docosahexanoic acid (DHA)
75mg daily