I have these pills I order over the internet - about 8 weeks later I get an envelope with these - Small Orange Round Pill - Cross Score on one side and C20 on the other – I order some Generic Equivalent To Cialis

I hope they are it; I don’t get any info only the pills – now I get more pills from the same place in small packages marked – Megalis-20 which I know is a Generic Equivalent To Cialis

Can you tell me what the - Small Orange Round Pill are?
Thank You :-)