Brandwave

Optifast vs OptiSlim:Which is more popular in New Zealand?

In October 2026, Optifast and OptiSlim were level in searches among meal replacement brands in New Zealand, with an estimated 5.5K branded searches each, at 23.2% of the total each. When we asked ChatGPT and Google AI Overviews about meal replacement brands, Optifast appeared in two of the five answers and OptiSlim in one. Optifast was mentioned before OptiSlim in every answer that named either.

Among meal replacement brands in New Zealand in October 2026

Who do people search for more?

Optifast and OptiSlim are searched for about as often as each other.

Optifast 5.5K searchesOptiSlim 5.5K searches

Who does AI mention more?

Optifast, mentioned in 2 of 5 answers, OptiSlim in 1

Optifast in 2 of 5OptiSlim in 1 of 5

Who does AI recommend more?

Optifast, named ahead of OptiSlim in 2 of 2 answers

Optifast first in 2OptiSlim never first

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Top meal replacement brands in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Optifast was mentioned in two out of five: in one of the three ChatGPT answers and in one of the two Google AI Overviews. OptiSlim was mentioned in one out of five: not in any of the three ChatGPT answers, but in one of the two Google AI Overviews. Optifast was listed before OptiSlim in every answer that named either.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. The Lady Shake1st
  2. The Man Shake2nd
  3. Optifast3rd
  4. Huel4th
  5. OptiSlim5th
  6. Muscle Nation–

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • The Man Shake5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Optifast2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • The Lady Shake2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • OptiSlim1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Huel1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Muscle Nation0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about meal replacement brands

5 answers

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 Optifast or OptiSlim more popular in search?

This chart shows how often people search Google for Optifast and OptiSlim by name. Each line represents a brand's share of searches for all six meal replacement brands we track, month by month, from searches in New Zealand.

Optifast and OptiSlim among meal replacement brands in New Zealand, by month

Share of searches by month for Optifast, OptiSlim. The figures are in the table below the chart.

View monthly share of searches table
MonthMuscle NationOptifastOptiSlimThe Man ShakeThe Lady ShakeHuel
Nov 202555.4%12.7%11.9%12.5%6.3%1.2%
Dec 202538.1%18.8%18.7%14.4%7.8%2.2%
Jan 202622.3%21%25.4%18.8%9.9%2.6%
Feb 202631.9%21%20.7%14.6%8.9%3%
Mar 202639.6%16.9%17.3%15.2%7.3%3.7%
Apr 202636.3%18.3%19.4%15.1%8.2%2.7%
May 202631.6%19.4%20.4%16.1%9.6%2.9%
Jun 202656.1%13.8%13.5%9.3%5.6%1.6%
Jul 202632.7%22.3%22.6%12.3%7.4%2.7%
Aug 202645.1%17.2%17.9%11.2%6.2%2.3%
Sep 202634.7%21.6%20.1%13.1%7.9%2.6%
Oct 202634.4%23.2%23.2%10.6%7%1.7%

How has branded search for Optifast and OptiSlim changed in New Zealand over the last 12 months?

3 findings
  • The lead changed hands 6 times in the 12 months ending October 2026: OptiSlim took it in January 2026, Optifast took it in February 2026, OptiSlim took it in March 2026, Optifast took it in June 2026, OptiSlim took it in July 2026, Optifast took it in September 2026.
  • Across the 12 months ending October 2026, Optifast’s share of searches among meal replacement brands in New Zealand moved from 12.7% to 23.2%, and its estimated monthly branded searches moved from 4.1K to 5.5K.
  • Across the 12 months ending October 2026, OptiSlim’s share of searches among meal replacement brands in New Zealand moved from 11.9% to 23.2%, and its estimated monthly branded searches moved from 3.9K to 5.5K.

How did search popularity change for New Zealand meal replacement brands in October 2026?

2 changes

  1. In October 2026, OptiSlim gained share of searches among meal replacement brands in New Zealand, from 20.1% to 23.2%.

  2. In October 2026, Optifast gained share of searches among meal replacement brands in New Zealand, from 21.6% to 23.2%.

How are Optifast’s and OptiSlim’s branded searches counted?

26 search terms

Brandwave collects information about searches that people make online using Optifast’s and OptiSlim’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.

Optifast

14 branded search terms

  • chocolate optifast
  • optifast
  • optifast bars
  • optifast chocolate bars
  • optifast chocolate shake
  • optifast dessert
  • optifast diet
  • optifast meal replacement
  • optifast powder
  • optifast protein plus
  • optifast shake
  • optifast soup
  • optifast vlcd
  • optifast vlcd shake

OptiSlim

12 branded search terms

  • optislim
  • optislim bars
  • optislim life
  • optislim nutrition
  • optislim platinum
  • optislim platinum plus
  • optislim powder
  • optislim shake
  • optislim soup
  • optislim variety pack
  • optislim vlcd
  • optislim vlcd shakes

How the Brand Demand Index is measured

Other head-to-heads among meal replacement brands

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