Green Prescription vs Optifast:Which is more popular in New Zealand?
In October 2026, Optifast had more branded searches than Green Prescription among weight loss programmes in New Zealand. Optifast had about 4,360 branded searches, while Green Prescription had 1,900. Optifast made up 57% of all weight loss programme searches we track, and Green Prescription accounted for 24.8%. When we asked ChatGPT and Google AI Overviews about weight loss programmes, Green Prescription appeared in three of the five answers and Optifast in one.
Who do people search for more?
Optifast, about 2 searches for every 1 for Green Prescription
Who does AI mention more?
Green Prescription, mentioned in 3 of 5 answers, Optifast in 1
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Top weight loss programmes in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Green Prescription was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. Optifast was mentioned in one out of five: not in any of the three ChatGPT answers, but in one of the two Google AI Overviews.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- Green Prescription3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Optifast1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Weight Watchers1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Jenny Craig0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about weight loss programmes
5 answers
Asked ChatGPT
“Which weight loss programme should I join in New Zealand?”
Asked ChatGPT
“What are the best weight loss programmes in New Zealand?”
Asked ChatGPT
“What's the best weight loss programme in New Zealand for steady weight loss?”
Searched Google, AI Overview
“weight loss programme nz”
Searched Google, AI Overview
“weight loss plan nz”
Not named in any answer:
Brands are shown in the order each answer named them. The survey took place in New Zealand on October 21, 2026.
Is Green Prescription or Optifast more popular in search?
This chart shows how often people search Google for Green Prescription and Optifast by name. Each line represents a brand's share of searches for all four weight loss programmes we track, month by month, from searches in New Zealand.
Share of searches by month for Optifast, Green Prescription. The figures are in the table below the chart.
View monthly share of searches table
| Month | Optifast | Green Prescription | Weight Watchers | Jenny Craig |
|---|---|---|---|---|
| Nov 2025 | 57.2% | 14.7% | 21.7% | 6.5% |
| Dec 2025 | 45.7% | 14.4% | 32.1% | 7.8% |
| Jan 2026 | 47.2% | 13.2% | 31.8% | 7.8% |
| Feb 2026 | 53% | 17.5% | 22.7% | 6.8% |
| Mar 2026 | 49.4% | 22% | 22% | 6.6% |
| Apr 2026 | 50.7% | 17.7% | 23% | 8.5% |
| May 2026 | 46.2% | 21.3% | 26.2% | 6.4% |
| Jun 2026 | 50.3% | 21.6% | 21.6% | 6.5% |
| Jul 2026 | 55.7% | 18.5% | 18.5% | 7.2% |
| Aug 2026 | 56.1% | 18.4% | 18.4% | 7.2% |
| Sep 2026 | 56% | 21.2% | 16.3% | 6.4% |
| Oct 2026 | 57% | 24.8% | 13.1% | 5.1% |
How has branded search for Green Prescription and Optifast changed in New Zealand over the last 12 months?
3 findings
- Optifast was ahead of Green Prescription in every measured month of the 12 months ending October 2026.
- Across the 12 months ending October 2026, Green Prescription’s share of searches among weight loss programmes in New Zealand moved from 14.7% to 24.8%, and its estimated monthly branded searches moved from 880 to 1.9K.
- Across the 12 months ending October 2026, Optifast’s share of searches among weight loss programmes in New Zealand moved from 57.2% to 57%, and its estimated monthly branded searches moved from 3.4K to 4.4K.
How did search popularity change for New Zealand weight loss programmes in October 2026?
2 changes
In October 2026, Green Prescription gained share of searches among weight loss programmes in New Zealand, from 21.2% to 24.8%.

In October 2026, Optifast gained share of searches among weight loss programmes in New Zealand, from 56% to 57%.
How are Green Prescription’s and Optifast’s branded searches counted?
11 search terms
Brandwave collects information about searches that people make online using Green Prescription’s and Optifast’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
Green Prescription
1 branded search term
- green prescription
Optifast
10 branded search terms
- chocolate optifast
- optifast
- optifast bars
- optifast chocolate bars
- optifast dessert
- optifast diet
- optifast protein plus
- optifast soup
- optifast vlcd
- optifast weight loss
Other head-to-heads among weight loss programmes

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