Mounjaro FAQ

Mounjaro is the brand name for tirzepatide, a once weekly injectable medication made by Eli Lilly. It is a dual GIP and GLP-1 receptor agonist used for type 2 diabetes and chronic weight management. In SA it is distributed by Aspen Pharmacare and registered with SAHPRA.

No. Both are weekly injectable medications in the same family, but Mounjaro is tirzepatide (acts on two pathways, GIP and GLP-1) while Ozempic is semaglutide (acts on GLP-1 only). Mounjaro produces larger average weight reduction in trials. See full comparison.

Not at the time of writing. Wegovy is not yet registered with SAHPRA. Mounjaro is the practical option for SAHPRA approved weight management treatment in SA right now.

Yes. SAHPRA registered, distributed by Aspen Pharmacare. Approved for type 2 diabetes (December 2024) and chronic weight management (October 2025). Availability at individual pharmacies varies, so confirm with your pharmacy.

Yes. Mounjaro is a prescription only medicine in SA. You need a valid script from a registered SA medical practitioner to fill at a SAPC registered pharmacy.

Adults with a BMI of 30 or higher, or BMI of 27 or higher with at least one weight related condition such as type 2 diabetes, high blood pressure, sleep apnoea, or high cholesterol. Used alongside a reduced calorie diet and increased physical activity.

Mounjaro is not appropriate or approved for weight management in people below the BMI threshold. Other approaches are usually more suitable in this range.

No. The medication is approved for adults aged 18 and over only.

No. Mounjaro is not used in pregnancy. If you are planning to conceive, stop the medication at least one month before trying to fall pregnant.

No. The medication is not used during breastfeeding because of insufficient safety data.

It mimics two natural gut hormones, GIP and GLP-1. This reduces appetite, slows gastric emptying so food stays in the stomach longer, and improves the body's insulin response to food. The combination reduces calorie intake and improves blood sugar control. Full explanation.

Appetite changes are often noticeable within the first week or two. Meaningful weight changes typically appear over the first few months. Most clinical trial weight reduction happens over twelve months at therapeutic doses.

Not directly. It reduces appetite and slows digestion so you eat less, and the resulting calorie deficit leads to fat loss. There are also indirect effects on how the body handles glucose and fat.

Some lean mass loss is expected with any significant weight loss. Resistance training and adequate protein intake during treatment reduce this. More on exercise during treatment.

Almost always 2.5 mg weekly for the first four weeks. This is a starting dose, not a therapeutic dose, and exists to let the body adapt to the slowed gastric emptying.

Generally every four weeks in 2.5 mg steps, until the therapeutic target is reached or maximum tolerated dose. The titration can be slowed if you are still having side effects at the end of four weeks.

15 mg weekly is the maximum approved dose. Many people reach a therapeutic effect at lower doses (5 mg, 7.5 mg, or 10 mg) and do not need to escalate further.

If less than four days late, take it as soon as you remember and resume your normal schedule. If more than four days late, skip the missed dose and take your next dose on your regular day. Do not double up.

Yes. To change days, take the new day's dose at least three days after your previous injection.

Abdomen (avoiding the area around the belly button), front of the thigh, or back of the upper arm. Rotate sites week to week. Full guide.

The needle is very fine. Most people describe it as a brief pinch rather than pain. Letting the pen warm to room temperature before injecting helps.

Refrigerated between 2 and 8 degrees Celsius. Do not freeze. After first removal from the fridge, a pen can be at room temperature (below 30 degrees) for up to 21 days, but not returned to the fridge.

Yes. Use a small insulated travel pouch or cooler bag to keep it within range. Most airlines allow refrigerated medical pens in carry on luggage with appropriate documentation.

Nausea, vomiting, diarrhoea, constipation, indigestion, abdominal discomfort, fatigue, and reduced appetite. Mostly gastrointestinal and most prominent in the first month and after dose increases. Usually settle.

Smaller meals, eaten more slowly. Stop eating when comfortable. Avoid fatty or greasy food in the first day or two after injection. Stay hydrated. Ginger or peppermint helps some people. If nausea is severe, the doctor can prescribe anti-nausea medication or slow the dose schedule. More tips.

No. For most people the gastrointestinal effects are worst in the first month and after each dose increase, and improve as the body adapts. By the time you reach a stable therapeutic dose, many people have minimal side effects.

In rat studies tirzepatide caused C-cell tumours. Whether this applies to humans is unclear and no causal link has been established in human use. The medication is contraindicated in people with a personal or family history of medullary thyroid cancer or MEN2 syndrome.

Rare but recognised risk. Severe persistent abdominal pain radiating to the back, with nausea, warrants urgent assessment. Previous pancreatitis is a contraindication.

Single dose pens at lower strengths (2.5 mg, 5 mg) sit at the lower end of the range, higher doses cost more per pen. Monthly cost typically falls in a range from R3500 to over R5000 depending on dose and pharmacy. Confirm current pricing with your pharmacy. Cost details.

Some plans cover it for type 2 diabetes. Cover for weight management is more variable and depends on the scheme. Call your medical aid directly to check formulary status and any criteria.

Any SAPC registered SA pharmacy. Major retailers like Clicks, Dis-Chem, and Alpha Pharm, plus independent pharmacies and online dispensing pharmacies. Confirm stock availability with your pharmacy before paying for the consultation.

Importing prescription medication for personal use is restricted in SA. Overseas online suppliers selling tirzepatide outside the regulated pharmacy chain are unreliable and often unsafe. SAHPRA has warned about substandard and falsified products. The locally distributed Aspen version is the safe regulated route.

Light to moderate drinking is usually fine. Heavy drinking increases nausea, dehydration, and pancreatitis risk. Many people find they want less alcohol on Mounjaro anyway.

Yes, and it is recommended. Resistance training and adequate protein during weight loss protect muscle mass. Cardio supports cardiovascular health and helps maintain results. Start gradually if fitness is currently low.

It can affect absorption of oral medications due to slowed gastric emptying. Specific concerns include oral contraceptives, narrow therapeutic index drugs like warfarin or levothyroxine, and combinations with insulin or sulfonylureas where hypoglycaemia risk increases. The consulting doctor reviews this.

It can reduce absorption of oral contraceptives. Use additional contraception for four weeks after starting and after each dose increase, or switch to a non oral method.

Appetite returns and weight tends to come back over time. The medication is intended as long term treatment for a chronic condition, not a short cycle. Stopping should be discussed with the treating doctor. More on stopping.

Short breaks (a few weeks) are sometimes necessary for surgery, severe illness, or other medical reasons. Longer breaks essentially restart the conditioning process and benefits may regress.

That depends on your situation. Many people use it long term, similar to medication for blood pressure or cholesterol. Some are able to taper after sustained results, others find continued use is needed. The treating doctor reviews periodically.

Sometimes, particularly where weight regain has occurred. The altered gut anatomy needs to be factored in and dosing may differ. Discuss with the consulting doctor.

Often yes. PCOS with significant metabolic features (insulin resistance, type 2 diabetes risk, BMI in the eligibility range) is one of the conditions for which weight management treatment is supported. The consultation reviews individual suitability.

Generally no direct effect on mood. Weight loss itself can affect mood positively or negatively depending on circumstances. Any concerning mood changes during treatment should be discussed with the treating doctor.

While on the medication, yes (to varying degrees). The appetite reduction is the mechanism by which it works. After stopping, appetite tends to return.