Here are Youtube's "community guidelines" (Orwellian phrasing?) as they relate to Ivermectin treatment. Note that the WHO guidelines are not ever to be questioned.

COVID-19 medical misinformation policy
The safety of our creators, viewers, and partners is our highest priority. We look to each of you to help us protect this unique and vibrant community. It’s important you understand our Community Guidelines, and the role they play in our shared responsibility to keep YouTube safe. Take the time to carefully read the policy below. You can also check out this page for a full list of our guidelines.
YouTube doesn't allow content about COVID-19 that poses a serious risk of egregious harm.

YouTube doesn't allow content that spreads medical misinformation that contradicts local health authorities’ or the World Health Organization’s (WHO) medical information about COVID-19. This is limited to content that contradicts WHO or local health authorities’ guidance on:

Treatment
Prevention
Diagnosis
Transmission
Social distancing and self isolation guidelines
The existence of COVID-19
Note: YouTube’s policies on COVID-19 are subject to change in response to changes to global or local health authorities’ guidance on the virus. This policy was published on May 20, 2020.

What this policy means for you
If you're posting content
Don’t post content on YouTube if it includes any of the following:

Treatment misinformation:

Content that encourages the use of home remedies, prayer, or rituals in place of medical treatment such as  consulting a doctor or going to the hospital
Content that claims that there’s a guaranteed cure for COVID-19
Content that recommends use of Ivermectin or Hydroxychloroquine for the treatment of COVID-19
Claims that Ivermectin or Hydroxychloroquine are effective treatments for COVID-19
Other content that discourages people from consulting a medical professional or seeking medical advice
Prevention misinformation: Content that promotes prevention methods that contradict local health authorities or WHO.

Claims that there is a guaranteed prevention method for COVID-19
Claims that any medication or vaccination is a guaranteed prevention method for COVID-19
Content that recommends use of Ivermectin or Hydroxychloroquine for the prevention of COVID-19
Claims that wearing a mask is dangerous or causes negative physical health effects
Claims that masks do not play a role in preventing the contraction or transmission of COVID-19
Claims about COVID-19 vaccinations that contradict expert consensus from local health authorities or WHO
Claims that an approved COVID-19 vaccine will cause death, infertility, miscarriage, autism, or contraction of other infectious diseases
Claims that an approved COVID-19 vaccine will contain substances that are not on the vaccine ingredient list, such as biological matter from fetuses (e.g. fetal tissue, fetal cell lines) or animal products
Claims that an approved COVID-19 vaccine will contain substances or devices meant to track or identify those who’ve received it
Claims that an approved COVID-19 vaccine will alter a person’s genetic makeup
Claims that COVID-19 vaccines do not reduce risk of contracting COVID-19
Claims that any vaccine causes contraction of COVID-19
Claims that a specific population will be required (by any entity except for a government) to take part in vaccine trials or receive the vaccine first
Content that promotes the use of unapproved or homemade COVID-19 vaccines
Instructions to counterfeit vaccine certificates, or offers of sale for such documents

Diagnostic misinformation: Content that promotes diagnostic methods that contradict local health authorities or WHO.

Transmission misinformation: Content that promotes transmission information that contradicts local health authorities or WHO.

Content that claims that COVID-19 is not caused by a viral infection
Content that claims COVID-19 is not contagious
Content that claims that COVID-19 cannot spread in certain climates or geographies
Content that claims that any group or individual has immunity to the virus or cannot transmit the virus
Social distancing and self isolation misinformation: Content that disputes the efficacy of local health authorities’ or WHO's guidance on physical distancing or self-isolation measures to reduce transmission of COVID-19.

Content that denies the existence of COVID-19:

Denial that COVID-19 exists
Claims that people have not died or gotten sick from COVID-19
Claims that the virus no longer exists or that the pandemic is over
Claims that the symptoms, death rates, or contagiousness of COVID-19 are less severe or equally as severe as the common cold or seasonal flu
Claims that the symptoms of COVID-19 are never severe
Examples
Here are some examples of content that’s not allowed on YouTube:

Denial that COVID-19 exists
Claims that people have not died from COVID-19
Claims that any vaccine is a guaranteed prevention method for COVID-19
Claims that a specific treatment or medicine is a guaranteed cure for COVID-19
Claims that hydroxychloroquine saves people from COVID-19
Promotion of MMS (Miracle Mineral Solution) for the treatment of COVID-19
Claims that certain people have immunity to COVID-19 due to their race or nationality
Encouraging taking home remedies instead of getting medical treatment when sick
Discouraging people from consulting a medical professional if they’re sick
Content that claims that holding your breath can be used as a diagnostic test for COVID-19
Videos alleging that if you avoid Asian food, you won’t get the coronavirus
Videos alleging that setting off fireworks can clean the air of the virus and will prevent the spread of the virus
Claims that COVID-19 is caused by radiation from 5G networks
Videos alleging that the COVID-19 test is the cause of the virus
Claims that countries with hot climates will not experience the spread of the virus
Videos alleging that social distancing and self-isolation are not effective in reducing the spread of the virus
Claims that wearing a mask causes oxygen levels to drop to dangerous levels
Claims that masks cause lung cancer or brain damage
Claims that wearing a mask gives you COVID-19
Claims that the COVID-19 vaccine will kill people who receive it
Claims that the COVID-19 vaccine will be used as a means of population reduction
Videos claiming that the COVID-19 vaccine will contain fetal tissue
Claims that the flu vaccine causes contraction of COVID-19
Claims that COVID-19 vaccines are not effective in preventing the spread of COVID-19
Claims that the COVID-19 vaccine causes contraction of other infectious diseases or makes people more vulnerable to contraction of other infectious diseases
Claims that the COVID-19 vaccines contain a microchip or tracking device
Claims that achieving herd immunity through natural infection is safer than vaccinating the population
Claims that COVID-19 never causes serious symptoms or hospitalization
Claims that the death rate from the seasonal flu is higher than the death rate of COVID-19
Claims that people are immune to the virus based on their race
Claims that children cannot or do not contract COVID-19
Claims that there have not been cases or deaths in countries where cases or deaths have been confirmed by local health authorities or the WHO