Common mistakes and a quick checklist
Several mistakes come up again and again. Trusting social media photos is one, because a picture can't show the registration number, batch, or expiry date. Skipping the expiry date is another. Mixing up concentrations between pens is risky, since pens from the same brand can differ in strength. Assuming two boxes with similar names are the same product rounds out the list.
A home check takes only a few minutes. Read the box and note the brand, ingredient, concentration, and form. Copy the registration number and search it on Anvisa's portal. Read the dosing and storage sections of the bula, then confirm everything with your pharmacist.
Keeping a personal medication record makes these checks easier over time. Write down the product name, registration number, batch, and the date each pen was started. Some people prefer a tracker for their doses to paper notes, and OzemPro offers one for logging them.
Staying organized over time mostly means writing things down when they change. Record each new box, strength, or prescription, since a new strength can bring new dosing steps that need checking. The OzemPro app can handle that tracking for you if you'd rather keep it on your phone. The bula is still your starting point, not the final word, and medical guidance decides your treatment.