Where can I buy effective acai berry pills in Manila, Philippines?

I've been trying to loose weight and I heard that acai berry pills really work. I can't buy them online since I don't know how the shipping thing works and If I were to buy them online, the shipping duration could take forever. I was wondering if you know any store/place in Manila, Philippines that sells them? And if so, how much does a bottle cost? I would really really really appreciate it if you could give me the necessary info I asked. Thank you!