Nothing alike, DHB is more like a tren/EQ hybrid while Primo is the ultimate aesthetic compound. DHB makes you hard and lean, Primo makes your muscle bellies explode.
1-test is chemically just primo with an added 1-methylation so they’re definitely somewhat alike but I guess you’re just talking about their effects on the user... But I had seen it said that there effects were similar but 1-test didn’t need as large of a dose
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