AIO for asking my wife to stay at her mom’s after I caught her putting something odd in my coffee?

I’m 46M really shaken and need advice to know if I went too far. My wife 49F and I have been married for 4 years, together for 7. She’s always been so kind, always making my morning coffee, and we’ve had a good life together. English isn’t my first language, I speak it well, but sometimes I struggle to explain feelings, so bear with me.

For the past few weeks, I’ve been feeling off after drinking my coffee. Dizzy, nauseous, sometimes my hands shake. I thought maybe it’s work stress or something I ate. But two days ago, I came home early and saw my wife in the kitchen, dropping some kind of powder into my coffee mug from a small, unmarked vial. It wasn’t sugar or creamer—it looked strange, like medicine or worse. When she saw me, she slipped the vial into her pocket and said it was “just a new coffee mix.” But her voice was shaky, and she wouldn’t look at me.

That evening, I asked her calmly to tell me what it was. She said it was a “natural supplement” to help me “feel better,” but she couldn’t say what it was or why there was no label. I got scared—those symptoms I’ve been having aren’t normal, and she’s never hidden things before. I told her I needed space to think and asked her to stay at her mom’s for a few days. She got upset, started crying, and said I was overreacting and breaking her trust. She left last night, and now she’s texting me, saying it was nothing harmful and I’m making a big deal out of it.

I kept the vial, but I’m too nervous to test it. I love her—she’s my everything—but I’m scared she might be putting something bad in my coffee. AIO for asking her to leave? I can’t sleep, and I keep checking the locks on the door, feeling paranoid in my own home. 😔 Please tell me if I’m wrong here.

Update: Thank you all for your response, you guys really helped me clear my head. I was hesitant, but I called 911, and they said they’ll look into it. I’m feeling worse each day, dizzy, weak, and my stomach’s still off, so I’m heading to the hospital today to get checked out. My wife keeps texting, begging to come back and saying it was just a “herbal energy boost” she found online, but she still can’t explain why she hid it. I told her to stay at her mom’s until I know more. I’m scared and exhausted, but I’ll keep you all updated when I get answers. Thanks for making me feel like I’m not going crazy.