1-andro and 4-andro cycle advice

[Domg]

Alright so I've cycled a low dose of 1-andro alone successfully with decent results but was going to do a cycle of 1-ad and 4-ad together (Supermandro and andro the giant) my question is for pct should I use a serm or is an otc pct sufficient. I've heard mixed opinions. Any advice is appreciated, thanks!