Drop chances

ItemStage 10Stage 50Stage 100Avg count
Cloth Fragment27%27%27%0.58
Paper27%27%27%0.58
Scrap Polymers27%27%27%0.58
Medical Journal20%20%20%0.2
Sewing Kit18%18%18%0.18
Bandage18%18%18%0.18
Aloe Cream14%14%14%0.15
Painkillers11%11%11%0.11
Vitamins11%11%11%0.11
Steroids9.0%9.0%9.0%0.09
Blood Bag7.4%7.4%7.4%0.07
First Aid Bandage7.3%7.3%7.3%0.07
Jar of Honey5.9%5.9%5.9%0.06
Splint5.7%5.7%5.7%0.06
Plaster Cast2.9%2.9%2.9%0.03
Fort Bites1.7%1.7%1.7%0.02
First Aid Kit1.6%1.6%1.6%0.02
Recog1.6%1.6%1.6%0.02
Herbal Antibiotics0.72%0.72%0.72%0.01
Antibiotics0.10%0.10%0.10%0

Average count per open at loot stage 50. From 40,000 simulated opens per stage; perks that raise loot are not counted.