How should I invest on my medical supplements using a credit card?

I fancy the OCBC 365 credit because it has cash rebate of $80, but only after you full fill their criteria. They require a minimum spending of $800 per month which in turn earns interest from different spending. This card suits me just fine being that I have broad spending habit and in the process it gives me $80 cash rebates every month. My only dislike is the rebate on the general spending which is 0.3%.

The Citi SMRT card is a pretty decent card for spending but they unfortunately exclude travel related online merchants. This to me is the downside of the card and may be a reason to get another card for travel websites.

For me nothing beats the 5% year-round cash rebates on dining, groceries, petrol and transport (that is taxis, ride hailing, trains and buses inclusive), locally and overseas when you spend minimum S$600 per month. And the cash rebate is capped at S$150 per month. So if you don’t drive, not to worry as you can enjoy 5% cash rebate for your transportation needs, be it a taxi ride, a booking made via ride hailing apps, or trains/buses.

I find it very pleasant and rewarding the Platinum Wellness offerings of the AMEX Express Platinum Credit Card as I get to rest and replenish after a hard week at work. I treat myself to spa privileges that come with my Card Membership with spa vouchers from Adeva Spa, Spa Rael and The Ultimate. I do this one’s a week and enjoy up to 40% off à la carte spa services at Adeva Spa, Spa Rael and The Ultimate. Simply relaxing and feels good to be pampered.

I have had this card for a long while. The good thing with the card is that AMEX have been waiving my annual fees which is probably why I still have the card. The pros with this card include – Great customer service officers that are friendly and will do their best to help you with prompt follow ups, direct credit of miles to your Krisflyer account, many small promos every few months with a fantastic sign up promo, no minimum spending and perfect for concert lovers as AMEX offers priority to provide tickets.

I would recommend the card for use by people who frequently purchase clothing and electronics and also in particular from known on online merchants like AliExpress, Amazon, Lazada, Shopee and Taobao.You get 10X points when you shop at retails for babies and children's wear, clothes, bags and shoes, department stores, electronics and gadgets; which cover almost all retails. Also the OCBC Reward is a $10 rebate for 3600 points which I think is fare.