A lot of confusion about primo... It has sides just like everything else. It will shut you down, sure the bounce back is easier than Tren, but all AAS shut you down.
I think the info on Anavar and Primo comes from the early 90's and passed down over the years. Anavar is NOT a weak steroid, one of the strongest mg for mg. Primo is not without side effects. Guys would use 20mg of Var and 200mg of Primo since it was so scarce, or they would use fakes which obviously gave them no sides and very little gains. Anavar is now widely used and good material is available at an affordable price, not 2.5mg tabs at $10 a pop. We know 60-100mg ED is not weak and has strong body recomp changes. Many guys have notices sides from var not previously reported, like decrease in libido, irritabillity, stomach pains, decrease in appetite, sometimes joint pain, liver and cholesterol problems, etc...
Primo is still not widely used. My take as someone who used lab tested primo at 600mg per week;
1-If you are on a budget, don't waste your money. There are far better bangs for your buck.
2-Primo has a UNIQUE cosmetic effect that usually disappears with cessation of the compound.
3-It has a large potential for shedding hair.
4-It definetely contributes to HPTA shutdown.
5-It will not build large amounts of mass.
6-Under 400mg is a waste.
7-It's effects don't seem to be as dependent on what you eat or how much you eat as compared to other steroids like nandrolone.
8-It increases sex drive greatly.
In conclusion, if money is not an issue, Primo is a fun add-on to any cycle, but it will definetely not create structural or permanent skeletal muscle changes.