Before you
start a GLP-1.
What these drugs actually do, the side effects most providers skip, and how to protect your muscle. For the person doing the research.
```It does more than shrink a number.
Semaglutide lowers heart attack and stroke risk in cardiovascular disease with excess weight.
Tirzepatide is approved for moderate-to-severe obstructive sleep apnea.
Semaglutide slows kidney disease progression in type 2 diabetes.
Its original, proven job: strong glucose control in type 2 diabetes.
Quieter food noise and less desire to drink. Early studies support it.
In a 1.6 million patient study, GLP-1 users had lower rates of most obesity-related cancers. Association, not proof.
What the loss really looks like.
First two weeks: 1-4 lbs, mostly intake and fluid. The big averages, ~15% on semaglutide and ~21% on tirzepatide, come after a year at full dose. Weigh weekly, not daily.
The scale cannot tell fat from muscle. About 25% of the loss can be muscle, up to 40% in some studies. With protein and training that drops, and I aim to keep muscle loss under 15%.
Why an expert, not an app
It is not just the shot.
The medication quiets appetite. What you do with that window decides the result. That is the part a refill mill never touches.
An endocrinologist sees things a prescribing app cannot. The thyroid dysfunction slowing your metabolism before the first dose. The insulin resistance pattern that predicts how you will respond to dose escalation. The perimenopause shift that changes how your body handles fat loss, and whether hormones should come before, alongside, or instead. The dose that is too high for your size, producing side effects that look like failure when they are actually a titration problem.
The four factors that determine your result:
- Protein and whole foods, enough to protect muscle and keep energy steady.
- Resistance training two to three times a week, the best defense against muscle loss.
- Sleep, too little raises hunger hormones and stalls weight loss and glucose control.
- Alcohol and stress, both slow progress and make side effects worse.
BEFORE YOU COMMIT
The cost.
Brand-name semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) run $900-$1,100/month at retail. That number stops more patients than side effects do. Here's what can actually change it.
Manufacturer savings cards
Can bring monthly cost to $25 with commercial insurance. They do not work for Medicare or Medicaid patients.
Insurance coverage
Improving steadily. Select commercial and employer plans now cover anti-obesity medications. Always worth a prior authorization attempt. Denials can be appealed.
Cash-pay / GoodRx pricing
Without insurance, many patients pay $400-$600/month depending on the agent and dose. Prices are falling as more medications reach the market.
I do not prescribe compounded versions. The FDA has flagged quality and safety concerns at many compounding pharmacies, including incorrect dosing and contamination. The cost savings are real. So are the risks. If price is the barrier, I would rather have that conversation with you directly than have you manage an unmonitored medication on your own.
WHAT TO MANAGE
The side effects.
Small, bland meals. Skip greasy food. Consider injecting at night.
Water, fiber, and a stool softener if needed. Don't wait until it becomes severe.
Usually self-resolving. Avoid high-fat meals during dose increases.
Smaller meals and avoiding lying down after eating often help.
Often a dosing issue. Contact your clinician if it persists.
Eat enough. This is not the time to aggressively restrict calories.
Hydration usually helps. Most headaches improve as your body adjusts.
Rotate injection sites and allow medication to reach room temperature before use.
A GLP-1 is a medical decision.
Treat it like one.
If you're considering a GLP-1, start with a conversation. You'll complete a short intake form, about five minutes, and then we'll schedule a phone consultation to see if we're a good fit. No commitment required at that stage.
Start the Conversation →