DHA, especially when combined with eicosapentaenoic acid (EPA), has been studied much more than most dietary supplements and seems to be effective for several uses. Some uses have more scientific evidence in their favor than others.
(Click Does DHA Work? for more information.)
Although good dosing information is available for DHA plus EPA, there is less information for DHA alone. The best dosages have not yet been established.
(Click DHA Dosage for more information.)
DHA can cause several side effects, such as:
- Prolonged bleeding.
(Click DHA Side Effects to learn more, including potentially serious side effects you should report immediately to your healthcare provider.)
DHA can potentially interact with several medications (see DHA Drug Interactions).
Normal doses of DHA are probably safe for most people, although high doses can cause problems. Some people may be more likely to experience problems than others. Therefore, you should talk with your healthcare provider prior to taking it if you have:
- High blood pressure
- A bleeding disorder
- Any allergies, including allergies to foods (especially fish), dyes, or preservatives.
Also, let your healthcare provider know if you are:
- Pregnant or thinking of becoming pregnant (see DHA and Pregnancy)
- Breastfeeding (see DHA and Breastfeeding).
Make sure to tell your healthcare provider about all other medicines you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.
(Click Is DHA Safe? for more information, including any available warnings and precautions.)