Yes, peptide stacking is common

Outcomes Primary and Secondary Outcome Patients in the semaglutide study arm experienced a significantly lower rate of the primary outcome (cardiovascular composite end-point) (6.5% vs 8.0%, HR 0.80 (95% CI 0.72-0.90) No significant difference in rates of cardiac death (HR 0.85, 95% CI 0.71-1.01) however significantly lower rates of heart failure (HR 0.82, 95% CI 0.71-0.96) and all-cause mortality (HR 0.81, 95% CI 0.71-0.93) Adverse Events Rates and types of adverse events were fairly similar between control and intervention groups Permanent premature discontinuation of semaglutide or placebo occurred in 2351 patients (26.7%) in the semaglutide group and 2078 (23.6%) in the placebo group In obese and overweight patients with cardiovascular comorbidities but without diabetes, treatment with weekly semaglutide was superior to placebo in reducing the incidence of death from cardiovascular causes, nonfatal myocardial infarction, or nonfatal stroke at a mean follow-up of 39.8 months

The right choice depends on individual factors that vary from person to person
This medication is also used off-label for lowering body weight in obese (body mass index 30 or more) and overweight (BMI 27 or more) individuals
What they tell you is that dosing instructions matter enormously, and that you should follow them exactly as written - not adjust doses yourself, not guess at unit conversions, not copy another patient's protocol