Fatty acids are organic acids with at least one carboxyl (-C(=O)OH, -COOH or -CO2H) group and a long carbon chain that can be joined by double bonds, as in unsaturated fatty acids, or single bonds ...

L-tyrosine is an amino acid that's often used in supplements to improve cognitive function affected by stress. Supplements containing L-tyrosine supplements may also help treat phenylketonuria (PKU).

However, supplements are sometimes necessary. For example, a healthcare provider may recommend taking an omega-3 fatty acid supplement for a specific health condition. Omega-3 supplements have been ...