Weight Loss Medication Comparison South Africa 2026: Which One Is Right for You?
Ozempic vs Wegovy vs Mounjaro vs Contrave vs Saxenda vs Phentermine vs Orlistat — costs, effectiveness, and side effects compared
Last updated: 28 May 2026 | Medically reviewed content — always consult your doctor
South Africa now has more prescription weight loss medication options than ever before. From weekly GLP-1 injections like Ozempic and Mounjaro to oral medications like Contrave, choosing the right one can feel overwhelming. This guide compares every major option available in SA — with real 2026 pricing in Rands, clinical effectiveness data, and practical guidance to help you and your doctor make the best decision.
The Big Comparison Table
Here is every weight loss medication available in South Africa in 2026 — both prescription and over-the-counter — compared head-to-head on the factors that matter most:
| Factor | Ozempic | Wegovy | Mounjaro | Contrave | Saxenda | Phentermine | Orlistat OTC |
|---|---|---|---|---|---|---|---|
| Generic Name | Semaglutide | Semaglutide | Tirzepatide | Naltrexone/ Bupropion | Liraglutide | Phentermine | Orlistat |
| Drug Class | GLP-1 agonist | GLP-1 agonist | Dual GIP/GLP-1 | Opioid antagonist + antidepressant | GLP-1 agonist | Sympathomimetic | Lipase inhibitor |
| How Taken | Weekly injection | Weekly injection | Weekly injection | Oral tablet (2x daily) | Daily injection | Oral tablet (daily) | Oral capsule (3x daily with meals) |
| Monthly Cost (ZAR) | R2,400 – R6,500 | R4,000 – R7,500 | R3,500 – R7,000 | R1,200 – R1,800 Cheapest Rx | R3,000 – R5,500 | R300 – R800 Budget | R250 – R900 No Rx Needed |
| Avg Weight Loss | 12–15% | 12–16% | 15–22% Most Effective | 5–8% | 5–10% | 5–7% | 3–5% |
| Time to See Results | 4–8 weeks | 4–8 weeks | 4–8 weeks | 8–12 weeks | 4–8 weeks | 2–4 weeks | 2–4 weeks |
| Approved Use Duration | Long-term | Long-term | Long-term | Long-term | Long-term | Short-term (12 weeks) | Long-term |
| SAHPRA Registered | Yes | Yes | Yes | Yes | Yes | Yes (Schedule 6) | Yes (60mg OTC / 120mg Rx) |
| Medical Aid Cover | Partial (diabetes) | Limited | Limited | Rare | Rare | No | Rare (120mg Rx only) |
| Main Side Effects | Nausea, constipation, fatigue | Nausea, diarrhoea, fatigue | Nausea, diarrhoea, injection site | Nausea, insomnia, dry mouth | Nausea, diarrhoea, headache | Insomnia, dry mouth, elevated heart rate | Oily stools, flatulence, urgency |
| Needle Required | Yes (weekly) | Yes (weekly) | Yes (weekly) | No (tablet) No Needles | Yes (daily) | No (tablet) | No (capsule) |
| Availability (SA) | Good | Moderate | Moderate (growing) | Good | Good | Good | Excellent (OTC at Dis-Chem/Clicks) |
| Read More | Full guide | Wegovy guide | Mounjaro guide | Contrave guide | Saxenda guide | Info | Orlistat guide |
Each Medication in Detail
Ozempic (Semaglutide)
GLP-1 receptor agonist | Weekly injection | Novo Nordisk
Ozempic is the most well-known weight loss medication in South Africa. Originally developed for type 2 diabetes, it works by mimicking the GLP-1 hormone to reduce appetite, slow gastric emptying, and improve blood sugar control. Most SA doctors use it as a first-line option because of strong clinical data and relatively good medical aid coverage when prescribed for diabetes.
Best for: People with type 2 diabetes who also need weight loss, or anyone looking for the most established GLP-1 option with the strongest prescriber familiarity in SA.
Pros
- Most prescribed GLP-1 in SA
- Strong clinical evidence base
- Medical aid may cover (diabetes)
- Once-weekly dosing
- Heart health benefits proven
Cons
- Nausea in first 4-8 weeks
- Injection required
- Expensive at maintenance dose
- Weight regain if stopped
- Supply shortages happen
Wegovy (Semaglutide 2.4mg)
GLP-1 receptor agonist | Weekly injection | Novo Nordisk
Wegovy is essentially a higher-dose version of Ozempic, specifically approved for weight management rather than diabetes. It reaches a maximum dose of 2.4mg compared to Ozempic's 2mg. In South Africa, Wegovy is gaining availability but remains more expensive and harder to find than Ozempic. Many SA doctors still prefer prescribing Ozempic off-label for weight loss due to better availability and pricing.
Best for: People whose primary goal is weight loss (not diabetes management) and who want the medication specifically approved for obesity, with budget flexibility.
Pros
- Approved specifically for weight loss
- Slightly higher max dose than Ozempic
- Same proven semaglutide molecule
- Once-weekly dosing
Cons
- Most expensive semaglutide option
- Less available in SA than Ozempic
- Limited medical aid coverage
- Same side effect profile as Ozempic
Mounjaro (Tirzepatide)
Dual GIP/GLP-1 receptor agonist | Weekly injection | Eli Lilly
Mounjaro is the newest and most powerful weight loss medication available in South Africa. It works on two receptors (GIP and GLP-1) instead of just one, which is why clinical trials show it produces greater weight loss than semaglutide-based medications. The SURMOUNT trials demonstrated average weight loss of 15-22% of body weight — with some participants losing over 25%.
Best for: People with significant weight to lose (BMI 35+), those who haven't achieved target results on Ozempic/Wegovy, and anyone willing to invest in the most effective option currently available.
Pros
- Highest average weight loss of any medication
- Dual-action mechanism (GIP + GLP-1)
- Excellent blood sugar improvements
- Once-weekly dosing
- Better tolerated by some than semaglutide
Cons
- Expensive (R3,500-R7,000/month)
- Newer — less long-term data than Ozempic
- Availability can be inconsistent
- Limited medical aid cover in SA
- Injection required
Contrave (Naltrexone/Bupropion)
Opioid antagonist + antidepressant combination | Oral tablet | Currax Pharmaceuticals
Contrave takes a completely different approach to weight loss. Instead of targeting GLP-1 receptors, it combines naltrexone (which blocks opioid receptors involved in food reward) with bupropion (an antidepressant that reduces appetite). This makes it particularly effective for emotional eaters, stress eaters, and people whose weight gain is driven by cravings rather than portion sizes.
Best for: Emotional eaters, people who can't afford GLP-1 injections, anyone who hates needles, and those whose weight gain is primarily driven by cravings and reward-based eating.
Pros
- Most affordable prescription option
- No injections — oral tablet
- Targets cravings and emotional eating
- May improve mood (bupropion component)
- Good availability in SA pharmacies
Cons
- Lower average weight loss than GLP-1s
- Slower onset (8-12 weeks for results)
- Insomnia can be problematic
- Cannot use with opioid medications
- Not suitable for seizure history
Saxenda (Liraglutide)
GLP-1 receptor agonist | Daily injection | Novo Nordisk
Saxenda was one of the first GLP-1 medications approved specifically for weight management in South Africa. It uses liraglutide, an older GLP-1 molecule that requires daily injection. While it's been largely overshadowed by Ozempic and Mounjaro, Saxenda remains a solid option — particularly for people who want to start with a lower-potency GLP-1 before committing to stronger options.
Best for: People who want a GLP-1 approach but prefer to start with a milder option, those who have concerns about the stronger semaglutide-based medications, and patients who've been on liraglutide for diabetes already.
Pros
- Longest track record of any weight loss GLP-1
- Specifically approved for weight management
- Dose can be finely adjusted daily
- Good for GLP-1 beginners
Cons
- Daily injection (vs weekly for Ozempic)
- Lower weight loss than semaglutide
- Expensive for the results delivered
- Limited medical aid coverage
Phentermine
Sympathomimetic amine | Oral tablet | Various manufacturers
Phentermine is the oldest weight loss medication still in use in South Africa. It works as an appetite suppressant by stimulating the central nervous system — similar to amphetamines. In SA, phentermine is classified as a Schedule 6 substance due to its abuse potential, meaning it requires a special prescription. It is only approved for short-term use (up to 12 weeks) and is typically used as a kickstart before transitioning to longer-term options.
Best for: Short-term weight loss kickstart, people on a strict budget, and as a bridge medication while waiting for GLP-1 supply or medical aid approval.
Pros
- Cheapest prescription option
- Fast-acting (results within 2 weeks)
- No injection required
- Widely available in SA
Cons
- Short-term use only (12 weeks max)
- Schedule 6 controlled substance
- Elevated heart rate and blood pressure
- Insomnia and anxiety common
- Abuse potential
- Weight regain after stopping is common
Orlistat (Xenical / Alli) OTC Available
Lipase inhibitor | Oral capsule | Roche (Xenical) / GSK (Alli)
Orlistat is the only weight loss medication you can buy over the counter in South Africa without a prescription (at the 60mg dose). It works completely differently from every other medication on this list — instead of suppressing appetite or targeting hormones, it blocks roughly 25-30% of dietary fat from being absorbed by inhibiting the lipase enzyme in your gut. The unabsorbed fat passes through your system, which is why dietary fat management is essential.
Best for: People who want to start weight loss medication without a doctor's visit, budget-conscious users, those who prefer a non-systemic approach (the drug barely enters your bloodstream), and anyone whose diet is high in fat.
Pros
- Available OTC at Dis-Chem and Clicks (60mg)
- No prescription needed for starter dose
- One of the cheapest options available
- Long safety track record (approved since 1999)
- Minimal systemic absorption
- Can be used long-term
- No injection required
Cons
- Modest weight loss compared to GLP-1 medications
- Oily stools and flatulence if fat intake is too high
- Must take with every meal containing fat
- Can reduce absorption of fat-soluble vitamins (A, D, E, K)
- Gastrointestinal side effects can be socially embarrassing
- Only effective if diet contains significant fat
Which Medication Is Right for You?
The best weight loss medication depends on your specific situation. Here's a quick decision guide based on common South African patient profiles:
On a Tight Budget?
If cost is your primary concern, Orlistat 60mg is available OTC from R250/month at Dis-Chem or Clicks — no doctor's visit needed. For prescription options, Contrave at R1,200-R1,800/month offers the best value long-term. Phentermine is the cheapest Rx option at R300-R800/month but limited to 12 weeks.
Recommended: Orlistat (OTC, cheapest) or Contrave (Rx, long-term)
No Prescription / No Doctor?
Orlistat is the only weight loss medication available in South Africa without a prescription (at the 60mg dose). You can walk into Dis-Chem or Clicks and buy it today. Results are modest (3-5% weight loss) but it is a legitimate, SAHPRA-registered starting point.
Recommended: Orlistat 60mg (OTC)
Want Maximum Weight Loss?
Mounjaro delivers the highest average weight loss at 15-22% of body weight. If Mounjaro is unavailable or unaffordable, Ozempic/Wegovy at 12-16% is the next best option.
Recommended: Mounjaro or Wegovy
Hate Needles?
Contrave and phentermine are the only oral options. Contrave is preferred for long-term use, while phentermine is limited to 12 weeks. Some compounding pharmacies offer oral semaglutide, but this is not standard in SA.
Recommended: Contrave
Emotional Eater?
If your weight gain is driven by cravings, stress eating, or emotional eating patterns, Contrave's naltrexone component specifically targets food reward pathways. GLP-1 medications mainly work on appetite and satiety.
Recommended: Contrave
Have Type 2 Diabetes?
Ozempic is the clear winner here — it's approved for diabetes, likely to be covered by your medical aid, and delivers excellent weight loss alongside blood sugar control. Mounjaro is also approved for diabetes with even greater glucose improvements.
Recommended: Ozempic or Mounjaro
New to Weight Loss Meds?
If you're cautious and want to start with something milder, Saxenda offers a gentler introduction to GLP-1 therapy with daily dosing flexibility. Alternatively, start Ozempic at the lowest 0.25mg dose.
Recommended: Saxenda or low-dose Ozempic
Cost Comparison: What You'll Actually Pay
Here's what a 12-month treatment course would cost at mid-range pricing at a typical Dis-Chem or Clicks pharmacy in South Africa:
| Medication | Monthly (est.) | 6 Months | 12 Months | Cost per kg Lost* |
|---|---|---|---|---|
| Orlistat 60mg (OTC) | R400 | R2,400 | R4,800 | ~R175 |
| Phentermine | R550 | R1,650** | R1,650** | ~R275 |
| Contrave | R1,500 | R9,000 | R18,000 | ~R300 |
| Ozempic | R4,000 | R24,000 | R48,000 | ~R400 |
| Saxenda | R4,200 | R25,200 | R50,400 | ~R630 |
| Mounjaro | R5,000 | R30,000 | R60,000 | ~R350 |
| Wegovy | R5,500 | R33,000 | R66,000 | ~R500 |
*Based on average results for a 90kg person. **Phentermine limited to 12 weeks maximum. Costs exclude doctor consultations (typically R500-R1,200 per visit) and blood tests.
Medical Aid Coverage in South Africa
Getting weight loss medication covered by your medical aid in SA requires strategy. Here's the current landscape:
| Medical Aid | Ozempic | Wegovy | Mounjaro | Contrave | Orlistat |
|---|---|---|---|---|---|
| Discovery Health | Covered (diabetes ICD-10 E11) | Motivation required | Motivation required | Unlikely | 120mg Rx only, motivation required |
| Bonitas | Covered (diabetes) | Limited | Case-by-case | Unlikely | Unlikely (OTC not covered) |
| Momentum | Covered (diabetes) | Limited | Limited | Unlikely | Unlikely |
| GEMS | Covered (diabetes) | Not listed | Not listed | Not listed | Not listed |
| Medihelp | Covered (diabetes) | Limited | Limited | Unlikely | Unlikely |
The diabetes loophole: Most SA medical aids cover Ozempic readily when prescribed for type 2 diabetes (ICD-10 E11). If you have both diabetes and obesity, your doctor can prescribe Ozempic under the diabetes indication, which significantly improves your chances of coverage. This is a legitimate medical indication, not a loophole — managing diabetes with semaglutide is its primary approved use.
Side-by-Side: Side Effects Comparison
All weight loss medications have side effects. Here's how they compare so you can discuss the trade-offs with your doctor:
| Side Effect | Ozempic/Wegovy | Mounjaro | Contrave | Saxenda | Phentermine | Orlistat |
|---|---|---|---|---|---|---|
| Nausea | Very common (40%+) | Common (25-30%) | Common (30%+) | Very common (40%+) | Uncommon | Uncommon |
| Constipation | Common | Common | Common | Common | Common | Rare |
| Diarrhoea | Common | Common | Uncommon | Common | Rare | Common (oily) |
| Insomnia | Uncommon | Uncommon | Common (20%+) | Uncommon | Very common | Rare |
| Headache | Common | Common | Common | Common | Common | Common |
| Increased Heart Rate | Mild increase | Mild increase | Possible increase | Mild increase | Significant increase | None |
| Injection Site Reactions | Common | Common | N/A (oral) | Common | N/A (oral) | N/A (oral) |
| Fatigue | Common | Less common | Uncommon | Common | Rare (stimulant) | Rare |
| Mood Changes | Rare | Rare | Possible (bupropion) | Rare | Possible (anxiety) | Rare |
| Oily/Fatty Stools | N/A | N/A | N/A | N/A | N/A | Very common (27%+) |
| Flatulence | Uncommon | Uncommon | Uncommon | Uncommon | Uncommon | Very common (24%+) |
Combining Diet and Exercise with Medication
No weight loss medication works well in isolation. Every clinical trial that produced the results listed above also included diet and exercise interventions. Here are South African-specific tips to maximise your results:
SA-Friendly Eating Tips on Medication
- Protein first: GLP-1 medications reduce appetite significantly — make every meal count. Start with lean biltong, grilled chicken, or fish before carbs. Woolworths rotisserie chicken is an easy, affordable protein source.
- Manage nausea with small meals: If you're on Ozempic or Mounjaro, eat 5-6 small meals instead of 3 large ones. Keep plain Provita crackers or dry toast on hand for nausea spells.
- Budget-friendly protein: Lucky Star pilchards (R18-R25 per tin), eggs (R45-R55/dozen), and dried lentils are protein-packed and gentle on the stomach when starting medication.
- Braai smart: You don't have to skip the braai. Choose chicken breast, lean wors, or kebabs over fatty chops. Skip the white rolls — use lettuce wraps instead.
- Stay hydrated: All weight loss medications can cause dehydration. Aim for 2-3 litres of water daily. Rooibos tea (caffeine-free) is a great SA option that counts toward your fluid intake.
- Jungle Oats for slow-release energy: A small portion of Jungle Oats in the morning provides steady energy and helps manage the blood sugar fluctuations some medications cause.
Exercise That Works Alongside Medication
- Park Run SA: Free 5km events every Saturday at 180+ locations across South Africa. Perfect for building fitness alongside medication. Find your nearest at parkrun.co.za.
- Planet Fitness: From R99/month — one of the most affordable gym options in SA. Focus on resistance training to preserve muscle mass during weight loss.
- Walking: Start with 30 minutes daily. Many SA neighbourhoods have excellent walking routes. If safety is a concern, walk in shopping centres or join a walking group.
- Strength training is essential: Weight loss medications can cause muscle loss alongside fat loss. Aim for 2-3 resistance training sessions per week to maintain muscle mass and metabolic rate.
How to Get Started in South Africa
Here is the step-by-step process to get prescription weight loss medication in SA:
- Book a GP appointment — or see an endocrinologist or weight management specialist. Telehealth platforms like Kena Health and DrConnect also offer online consultations.
- Get your baseline tests — your doctor will typically request fasting blood glucose, HbA1c, thyroid function (TSH), liver function, and kidney function tests. Budget R800-R1,500 for blood work at Pathcare or Lancet.
- Discuss your options — share this comparison with your doctor. Ask specifically about which medications they have experience prescribing and which align with your budget and goals.
- Check medical aid — before filling your script, call your medical aid to confirm coverage and any pre-authorisation requirements. Get the reference number in writing.
- Fill your prescription — compare prices between Dis-Chem, Clicks, and independent pharmacies. Dis-Chem's app shows live stock levels. Some medications require cold-chain storage, so confirm with the pharmacist.
- Follow up — schedule a follow-up appointment for 4-6 weeks after starting. Your doctor will assess your response, manage side effects, and adjust dosage if needed.
Frequently Asked Questions
Ready to Explore Your Options?
Read our detailed guides for each medication available in South Africa:
Ozempic Guide Mounjaro Guide Contrave Guide Saxenda Guide Orlistat Guide (OTC)