any injectable will shut down hpta cos it stays in blood 24hrs/day
and as primo is very inefficient @ 200mg/week it is no point doing it at this dosage i say that u go for 2 on 4 off cycle. inject primo 1000mg first day and another 400 third day. u will be ON for around 2 weeks and will recover in about 2 weeks or three. then repeat this cycle again and again.
BArPk