I don't like women who took marihuana.

[Silverobama]

Hi.

I told my friend two weeks ago that I was dating a woman, but yesterday I told my friend that I gave up dating her. My friend asked me why and I said "I don't like women who took marihuana".

This woman took marihuana when she was in Canada. Maybe it's good for her but it's definitely not good for me.

I wonder if the italic sentence is natural.

[GoesStation]

No. You need the present perfect.

We usually spell it marijuana nowadays.

[emsr2d2]

You need either the present perfect or the present simple:

I don't like women who have taken marijuana.
I don't like women who take marijuana.

Note that the more common collocation is "smoke marijuana". Even though it's possible to take it in things like cookies, generally marijuana is inhaled. "took/take" sound odd to me.

I'd say "I don't like people who smoke dope/pot/weed".

[SoothingDave]

Or "used marijuana." Or "cannabis," as it's usually called in legit business. It's perfectly legal in Canada. They have regulated stores that sell it. You can't use it in public, but in a private place you can.