I did TT oral Primo when it first came out a few years back. Before taking them, I read something like they were only ~30% absorbed. So I was doing between 150-200mg. Were they effective? -- yes, but honestly for the money I think Var would have been better well spent.
For a girl, I am sure they would be great at 50mg to get real toned, but for a guy it just takes too much to see any real results.
I never did inj. Primo, but I am sure it would have taken in at least the 150-200mg range to see an equivalent 500mg/wk inj.