Reta just isn't the right fit for every research subject — it's popular in bodybuilding circles specifically because it's less appetite-suppressing and lets subjects eat more protein, but that's actually a drawback when the goal is weight loss. A lot of subjects I've observed in my cohorts have struggled with appetite control on it and ended up miserable. The researchers seeing the best results tend to be the ones whose subjects already have their diet dialed in.

I've moved many of my subjects over to Tirz or Tirz+Reta and seen much better outcomes. Since you're still fairly early, you could try bumping the dose first, but if things don't improve I'd seriously consider the switch. And don't let anyone pressure you about dosing low being ineffective — my RS started Tirz back in 2022 on micro doses once a week, did incredibly well, and is now 3.5 years in at only 6.9mg for maintenance when most subjects at that point are up around 15mg.

For the diarrhea in the meantime, bananas are great since they have both pectin and potassium, and adding electrolytes can really help too. Subq KPV is also worth looking into for GI issues — it's been a solid addition for some of my subjects dealing with similar problems.