DOSE: T+ 0:00	40 mg	oral	Lisdexamfetamine
T+ 0:00		oral	Caffeine	(liquid)
T+ 1:49	20 mg	oral	Lisdexamfetamine

BODY WEIGHT:

175 lb

Substance: Lisdexamfetamine (Vyvanse)
Dosage: 60mg total (40mg at 4:59 PM, 20mg at 6:50 PM)
Other Substances: Energy drink (caffeine)
Setting: At home, mostly in my room

Experience Level: Moderate — I’ve only used Vyvanse, methylphenidate, and caffeine as stimulants before, plus some other drugs like cannabis, gabapentin, nicotine, alcohol, triazolam, and lorazepam.

This was my first time taking more than 40mg of my ADHD meds. I took 40mg at 4:59 PM along with an energy drink. During the come-up, I started building a model kit and felt pretty productive for a couple of hours. I was also hungry up until the second dose.

At 6:50 PM, I took another 20mg. Around 9 PM, when this dose peaked, I couldn’t sit still anymore. I started scrolling Twitter but got bored fast. I tried watching YouTube and shows, but nothing really interested me. Music was the only thing that sounded good and held my attention.

Time got weird — I’d check my phone thinking only 20 minutes had passed, but it was closer to an hour. This peak lasted until around 10 PM, then the comedown slowly started.

During the first couple hours of the comedown, I still felt euphoric and focused on the music with a cool body high. Before this, I barely had any jaw clenching or muscle tension, but then it hit hard. I also got tightness in my chest and some anxiety.

I finished the main part of the model kit around 2 AM, but when I tried to sleep, my body wasn’t tired while my mind was exhausted . Eventually, as the sun came up around 4 AM, I managed to get about 3 hours of sleep. I woke up feeling upset and uncomfortable.

Now, it’s 7 PM the next day and I feel normal again. Overall, it was a decent experience. I learned not to take stimulants late in the day. Next time, I’ll try using tyrosine to help with the comedown.

Exp Year: 2025	ExpID: 118968
Gender: Female
Age at time of experience: 17
Published: Nov 19, 2025	Views: Not Supported
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Lisdexamfetamine (589), Caffeine (11) : General (1), Combinations (3), Alone (16)