Low Cost Weight Loss Injections: What People Already Prescribed Them Need to Know

Mounjaro and Wegovy are once-weekly injectable medicines used alongside diet and exercise for weight management. Mounjaro's active substance is tirzepatide, which acts on both GIP and GLP-1 receptors; Wegovy's active substance is semaglutide, which acts on GLP-1 receptors. Both are supplied as pre-filled pens and are started at a low dose, with any adjustments made by your prescriber over time — never on your own.

Because these are prescription-only medicines, access to them is always through a qualified prescriber and a registered pharmacy in your country. GLP Trackr does not sell, supply, or help you source either medicine, and no price information is listed here. If you have questions about access or cost, your prescriber or doctor and a registered local pharmacy are the right people to ask.

For a broader overview of how these medicines work and what the injection process involves, see our guide to weight loss injections. If cost is a specific concern, you may also find it useful to read about weight loss injection prices and finding best-priced weight loss injections — both of which cover the topic factually and without facilitating purchase.

Injection sites and rotation

Mounjaro and Wegovy are both injected subcutaneously — under the skin — typically into the abdomen, outer thigh, or upper arm. Rotating the injection site with each dose is generally recommended to reduce the chance of localised skin reactions at any one spot. Your prescriber or the patient information leaflet that came with your pen will give you the specific guidance that applies to your medicine.

Keeping track of which site you used last — and when — is easy to forget on a weekly schedule, especially over several months of treatment. That is where a consistent logging habit makes a genuine difference.

The single most valuable thing you can do to get the most from a prescribed weight loss injection is to stay consistent — and the most common way people lose consistency is by losing track of where they are in their schedule. GLP Trackr's injection-site tracking is built specifically for this: log each injection and the app records which site you used, then suggests your next rotation automatically so you are never repeating the same spot without realising.

Alongside site tracking, the app logs each dose — the strength, the date, and the time — so you always have a clear record of your treatment history. This is especially useful to bring to prescriber appointments, where your doctor can see exactly how your schedule has looked over recent weeks.

If you ever notice a reaction at an injection site — redness, tenderness, or any localised response — you can log that too using the side-effect tracker, noting the site and timing so you have a pattern to discuss with your healthcare professional rather than relying on memory.

Always follow the guidance of your prescriber or doctor regarding your injection technique, dose, and schedule. If you notice anything severe, persistent, or concerning at an injection site or elsewhere, contact your healthcare professional promptly. GLP Trackr helps you record what is happening so you can have an informed conversation — it is not a substitute for clinical advice.

Ready to stay on top of your injections and make every dose count? Download GLP Trackr on the App Store or Google Play and start a free 7-day trial — log your sites, track your rotation, and keep your weekly schedule clear from day one.