Well, where do I start.
First there's the fire. As stated in the news a "crazy" man suspected his wife of an affair under the influence of drugs. Then set the house on fire. Maybe it's explicitly stated maybe just implied.
Rachel takes unknown pills of unknown origin subscribed to her by somebody. It leaves her vulnerable and open to suggestion. Though I now believe it just lowers her inhibitions.
The person who gave her the pills told her to take them at home or in a safe environment. And be alone for half an hour (?). So that person clearly knew about the (side) effect. Does that mean mean they meant her no harm? Why would they warn her and not exploit it otherwise? What is the main effect then? Are the person or people making them not the same as the one who prescribed them to Rachel? When did she start taking them?
And who the hell was the person on the phone?! Rachel's friend? An acquaintance? Her one time only (lesbian) affair? She said she had an affair / one night stand with a woman, didn't she? But that they were only friends now. Or are they still friends? Is she maybe trying to manipulate Rachel? Is
she the one who gave her the pills? Her doctor that
does take / took advantage of her during a visit (when she(?) asked her to take a pill)? I.e. not at home, which would be suspicious.
Or does she know the doctor and
she is taking advantage of her.
No matter which one of the two is trying to exploit the side(?) effects, the doctor may have warned her / advised her to stay safe because they knew of the effects and didn't want anybody else to exploit it / ruin their work. That being said if no suggestion is given / nothing is done while they are in effect, what would be the meaning in taking them. We don't know the
true, intended effect. It may be that or the polls stay in the patients system for a while, like antibiotics and have a longer lasting effect over a longer period of time.
Still, if I got my hands on the person responsible, I would castrate them (if male) or stuff them full of the pills and have them work as a prostitute (if female).
Rant over.