OE 50MG Tablets NOT 50 MG!

Okay so I’ve been taking 15-20 mg tablets for 1 year now from local shops. I ordered 14 50mg strawberry for OE & let me just say… that’s pretty much 3-4x as many mg as I would get at the price they offer…. I got them 5 days ago & have one left not to mention they threw in an extra one. Why are they not strong at all? 40mg of opia & I can’t keep my eyes open. 100mg of OE & I had to go to my local shop & picked up some 18mg 7 lives tabs & one of those kicked harder that 2 strawberry. NOBODY EVER COMPLAINS ABOUT OE!! WHAT IS GOING ON??!! What should I do? I’m kinda upset about this!! I was so excited when I ordered!!