If the goal is specifically to drink less, naltrexone tends to be the more straightforward option
How to Administer a GLP-1 Injection: Step-by-Step Guide GLP-1 injection needles are very fine typically 29-gauge to 31-gauge designed specifically for subcutaneous delivery
The findings do need to be confirmed in randomized controlled trials
Frankel AH, Wahba M, Ashworth V, et al
You can find GHK-Cu sold in gray-market "research" formats with no physician oversight, no sourcing transparency, and no plan
Some side effects of phentermine that have been reported include pulmonary hypertension, valvular heart disease, palpitations, increased heart rate or blood pressure, insomnia, restlessness, dry mouth, diarrhea, constipation and changes in sexual drive