Can i take "pre-workout" supplements while using the medications called sucralfate 1 gm & omeprazole dr 40mg ?

Depends on the : Supplement, but most of the common supplements, such as creatine or Amino Acids will be fine to take with these medications. However, more importantly, i would not recommend taking these supplements with a history of pckd. Also, some of the stimulant supplements(again, do not recommend for you), can cause stomach irritation, and would avoid those as well with an apparent hx of ulcers.Best of luck!

Ulcer?: Those two medicines are for acid reduction in ulcer or gastritis. They should not have contraindication to your intake of food or supplement unless the food defeats the purpose of the medicines like some pain meds, alcohol or cigarette..