Talk to Eye Specialist on Dry Eyes .. Drops Suggestion Needed

hello dr iam age 28.. i have been using systane eye drops in the night for the last 2 3 years because of my dry eye problem .. but now a days my doctor is out of reach .. as systane is short from the market .. what else alternate we can use it .. can u please suggest between these three 1 tears natural 2 2 blink eyelub .. which one is more better and safe .. thanks in advance