Weed Shakes: What They Are and How to Manage Them
At CB1 Medical, we often hear questions about unexpected side effects of cannabis-based medicines. One lesser-known but fairly common experience is what many refer to as “weed shakes” — involuntary muscle tremors or spasms that can occur after consuming THC-rich medical cannabis.
Although unsettling, these shakes are usually harmless and short-lived. In this guide, we explore what causes them, how to manage them, and why regulated medical cannabis is safer than unregulated alternatives.
Contents
What are Weed Shakes?
“Weed shakes” is an informal term used to describe temporary muscle tremors that some individuals experience after consuming cannabis. These involuntary spasms can feel similar to shivering, trembling, or mild twitching and typically occur shortly after use.
They are most commonly linked to higher doses of THC (tetrahydrocannabinol) and are usually short in duration, especially when cannabis is consumed via inhalation.
Why do Weed Shakes happen?
There are several reasons a person might experience tremors after consuming cannabis-based products:
- Too Much THC: Overconsumption of THC can overstimulate the nervous system, especially in those with low tolerance — often seen with oils or edibles due to delayed onset.
- Anxiety or Panic: THC can increase anxiety in sensitive individuals, leading to physical symptoms like trembling, sweating, or a racing heartbeat.
- Cold Environments: Cannabis may slightly lower core body temperature, making tremors more likely in chilly surroundings.
- Combining with Stimulants: Caffeine or nicotine can amplify overstimulation when used alongside THC, increasing shakiness.
- Unregulated Cannabis: Products from unregulated sources may contain unpredictable THC levels or contaminants, increasing the risk of adverse effects like spasms.
How long do Weed Shakes last?
In most cases, weed shakes resolve within 20–60 minutes when cannabis is inhaled. If consumed through edibles, effects may last longer due to slower absorption. While uncomfortable, these tremors are rarely harmful.
If tremors persist or recur frequently, consult your medical professional to adjust your treatment plan.
How to manage and prevent Weed Shakes
Although usually harmless, there are steps you can take to reduce the likelihood and severity of weed shakes:
- Stay Hydrated: Dehydration can worsen muscle spasms. Drink water before, during, and after cannabis use.
- Use Relaxation Techniques: Deep breathing, mindfulness, or gentle stretching can reduce stress-related tremors.
- Consume CBD: CBD has calming properties that may counterbalance THC’s overstimulating effects.
- Switch Strains or Products: Choose strains higher in CBD or those with calming terpenes like linalool or myrcene.
- Avoid Stimulants: Limit caffeine and nicotine, especially on days when using cannabis.
- Start Low and Go Slow: Begin with low doses, especially if you’re new to medical cannabis or returning after a break.
Why regulated Medical Cannabis matters
One of the best ways to avoid side effects like weed shakes is to use prescribed medical cannabis under the guidance of a specialist clinic.
At CB1 Medical, every product is lab-tested, quality-controlled, and tailored to your needs. Medical cannabis in the UK is:
- Tested for consistency, purity, and cannabinoid content
- Free from harmful additives or contaminants
- Prescribed by qualified clinicians with ongoing support
Final thoughts: Weed Shakes and Medical Cannabis
Weed shakes can be alarming, but they’re typically short-lived and manageable. Understanding the potential causes and how to prevent them can lead to a smoother treatment journey.
If you experience recurring symptoms or unwanted side effects, speak to your clinician — a change in product, dose, or formulation may help.
At CB1 Medical, we’re committed to supporting safe and effective treatment plans with expert-led medical cannabis care.
Curious if you’re eligible?
Try our free eligibility checker to see if medical cannabis is right for you.
