Q and A

Question

What are the pills marked with M171 and D100?

Answer

If your doctor prescribed HIV medication that looks like the pill in the picture and has M171 embossed, this is likely to be Tribuss.

tribuss

Picture: Tribuss, manufactured by Aspen.

The picture is not very clear, but M171 is one one side and D100 is on the other.

This is based on the information at this website.

http://www.events.za.bz/news-archive.aspx?ID=697

Tribuss is a generic version of Atripla and it is manufactured by Aspen. It is widely used in South Africa.

Just like Atripla, Tribuss contains three active HIV drugs – efavirenz, tenofovir-DF and emtricitabine.

Sometimes Tribuss is mainly used as an HIV treatment by people who are HIV positive. However, this is an older treatment that is steadily being switched to newer drugs in many countries.

Some countries use Tribuss as a way to prevent HIV after recent risk for people who are HIV negative. This way of using HIV meds is called PEP. Tribuss is not recommended as PEP in most countries though because of the risk of side effects that are higher in people who are HIV negative.

This answer was updated in December 2019 from an orginal question posted in September 2016.

211 comments

  1. Simon Collins

    Hi Aristote, everything will be okay, just take your next pill at the regular time. Missing one pill withe these meds is okay, so long as you don’t do this regularly.

  2. Aristote

    Hey my name’s aristote yesterday I did shifts for a nother place and I was then I forgot to take my antroiza. Please help me what gonna happen to me and what I must do please help

  3. Lisa Thorley

    Hi Khatliso,

    Info about PrEP and PEP can be found here including what meds you’d take:

    http://i-base.info/pep-and-prep/

    Please see the above post for what is M171.

  4. Khatliso

    I would love to know what are the pills used before unprotected sex or after unprotected sex? The person using M171 is the one negative or positive?

  5. Lisa Thorley

    Hi Ellen,

    Please speak to your boyfriend about this.

  6. Ellen

    My boy friend use atroiza. So he is positive or not

  7. Lisa Thorley

    Hi Bolade,

    If your partner is taking Atrozia and their viral load is undetectable, you aren’t at any risk. Please see here for more info:

    http://i-base.info/htb/32308

    Some people do use ARVs when they aren’t positive. This is to help prevent HIV.

  8. bolade

    My partner is on the Antroiza treatment. He did not disclose the information to me. When I tested , I was negative and now I am afraid to test again since we are having unprotected sex.

    He is confident that I can go and test . Is it possible for someone to take treatment even if they are negative?

  9. Lisa Thorley

    Hi Lebogang,

    Please see the following link:

    http://i-base.info/htb/32308

  10. Lebogang

    My partner is on the Antroiza treatment. He did not disclose the information to me. When I tested , I was negative and now I am afraid to test again since we are having unprotected sex.

    He is confident that I can go and test . Is it possible for someone to take treatment even if they are negative?

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