You can visit the Herbal Bliss in Central or go to the Asia Pacific Aromatherapy Ltd. in Central. By the way, the evening primrose oil is better to blend with the other base oil for use because of the expensive cost and the high content of hormone like essense. In addition, because of the high GLA, you better not to buy a big size because it is easily oxidized. I am a qualified aromatherapist, if you have any question, you can email me at beautescents1608@gmail.com
I've seen a bottle of capsules at a Mannings pharmacy in Causeway bay, in the vitamins section right near the vitamin C! Remember seeing it because I've also been contemplating getting some too. : ) If you end up buying, let me know how it works out!