What is DHA Supplement?
Docosahexaenoic acid (DHA) supplement is an omega-3 fatty acid found in fish and fish oil supplements. Omega-3 fatty acids provide numerous benefits for your heart and brain.* While DHA can be consumed through food, most individuals do not get enough from their diet. 
Omega-3 DHA Benefits
Fish oil has proven beneficial for supplementing heart and cardiovascular health.* Because of this, it is recommended that individuals eat fatty fish such as salmon two times per week. However, for those who cannot eat fish or do not wish to, taking DHA fish oil supplements are an excellent way to meet your dietary needs.
DHA is also supplemental for cognition, and may promote healthy growth and functioning.* 
DHA is able to promote healthy working memory, as well as memory formation.* [2,3]
This is particularly true in individuals who do not consume enough fish to maintain adequate levels of DHA.  DHA also promotes healthy blood flow to the brain.* 
DHA Fish Oil Dosage
1-2 softgels per day have been recommended. Ingesting DHA softgels with other fat-soluble supplements can enhance absorption.