Clinical study · 12 weeks
Average loss: 18.4 kg.
Independently audited results across 1,200+ participants on the VLCD program. Peak loss of 2.5kg per week, sustained for 12 weeks.


As a proudly Australian-owned company, we are committed to making healthy living more achievable through nutritionally balanced meal replacements, convenient wellness products, and proven weight management programs that fit into real lifestyles.
Our products are carefully developed to support healthy and effective weight loss while delivering essential daily nutrition.
We proudly deliver high-quality health and nutrition products designed for Australians.
With decades of experience in health and nutrition, Optislim has become one of Australia's recognised weight loss brands, trusted by customers nationwide.
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Meal Subscriptions | Generic shakes | |
|---|---|---|---|
| Price per meal | $1.50 | ~$11.50 | $3–6 |
| 30 day weight loss guarantee | 100% refund | None | None |
| Clinical trial backing | 12 week study | Not published | Varies |
| Rapid (VLCD) program | Up to 2.5kg / wk | Portion only | Often no |
| Cancel anytime | Two click process | Hidden & confusing | |
| Made in Australia | 100% AU-owned | Not always | Mostly imported |
Clinical study · 12 weeks
Independently audited results across 1,200+ participants on the VLCD program. Peak loss of 2.5kg per week, sustained for 12 weeks.


Customers transformed
10,000
Real Australians lost real weight on Optislim. Since 2001.
Customer rating
4.8★
Average across 5,800+ verified Australian reviews.
Per shake
Protein, fibre, and 25 essential vits & minerals. Protects lean muscle while the kilos come off.
7 flavours
Join thousands of Australians who have chosen Optislim as their trusted partner in weight management and healthy living.