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Does LSD Accelerate Heart Rate?

Does LSD Accelerate Heart Rate?

Giordano Novak

Giordano Novak

Medically reviewed by Giordano Novak, University of São Paulo on April 3rd 2022

Key Takeaways:

  • LSD does increase heart rates temporarily
  • The effects of LSD may last up to 24 hours
  • Researchers suggest that the increase in heart rate is due to the body’s response to stress and fear caused by the change in perception when taking LSD
  • Studies have shown that there is an increased risk of developing arrhythmias, or abnormal heart rhythms, after taking large doses of LSD for long periods of time.


When you take acid, you’re probably going to have an exciting and illuminating experience. However, while the high is good, there are potential side effects that you need to be aware of. 

After all, you want to know what to expect if your trip doesn’t quite go as planned.

LSD can increase heart rate, leading to palpitations and a racing heart that might leave you feeling a little anxious and on edge. 

Despite this, it is important to note that an increased heart rate isn’t dangerous unless you have an underlying health condition that advises against it.

In this guide, I’m here to ease your mind and take you through everything you need to know about what LSD is and how it affects the heart. That way, you’ll be more than prepared and can also determine if acid is the right drug for you.


What Is Acid (LSD)?

LSD (lysergic acid diethylamide) is a semi-synthetic PSYCHEDELIC drug. It’s derived from ergotamine, which is found in certain fungi and rye [3]. 

Acid has been around for quite some time, as it was FIRST synthesized in 1938 by chemist Albert Hoffman.

Acid is a hallucinogenic drug that’s known for its mind-altering effects and DISTORTED sense of reality. It does not have a taste, so it’s usually consumed ORALLY in liquid form or on small pieces of paper (called blotter tabs).


Pro Tip: The high from LSD can last anywhere from 8 – 12 hours and is characterized by changes in sensory perception, intense emotions, and transcendental states of awareness.


How Does LSD Affect the Heart?

LSD does indeed increase your heartrate and RAISE your blood pressure. This occurs because LSD activates the sympathetic nervous system, which is responsible for REGULATING various bodily processes such as breathing, digestion, and heart rate.

When you take LSD, it stimulates this system and leads to an INCREASED heartrate. In some cases, this can lead to palpitations and a RACING heart, which can be quite uncomfortable [2].

Studies have shown that there is the POTENTIAL for an increased risk of developing arrhythmias, or abnormal heart rhythms, after taking large doses of LSD for long periods of time.

The increased risk does NOT appear to be related to any long-term damage, and the extent of risk has not been studied in enough detail. 

Currently, it is primarily COMPARATIVE studies with MDMA (which can cause heart problems) that are being used [1].


Does Acid Accelerate Heart Rate?

Yes, LSD does accelerate heart rate. When taken, it can stimulate the sympathetic nervous system and lead to an INCREASED heart rate and palpitations. For most people, this does NOT pose any danger but could be uncomfortable.

It’s important to note that for most people, the increased heart rate IS NOT dangerous and does not indicate an underlying health issue.


Pro Tip: If you have any pre existing cardiac conditions or are on any medications that interact with LSD, it is important to avoid taking acid.


What Else Can LSD Do?

What are the other effects of LSD? Increased blood pressure and body temperature, and feeling ANXIOUS or on edge. 

Some of the other side effects include dizziness, sweating, and nausea. You may also feel like you are LOSING control.


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Pro Tip: It is possible that the effects could last up to 24 hours, so it’s important to take extra care if you’re planning a trip.


LSD isn’t known for its physical effects and usually has more of a PSYCHOLOGICAL impact. 

Those who struggle with mental illness should AVOID taking acid as it can lead to Hallucinogen Persisting Perception Disorder (HPPD), which is flashbacks to the high [4].

These flashbacks can last from days to YEARS and can be more severe than any physical withdrawal symptoms would have been.

On the flip side, there is promise for LSD doses being used to HELP treatment-resistant depression, among other therapeutic benefits for the human brain [5].


Pro Tip: LSD users don’t have to worry about addiction as it cannot cause physical dependence. However, you can build a tolerance to LSD makes it open to drug abuse.


Can I Take LSD if I Have Heart Problems?

No. If you have any underlying heart conditions, it is best to avoid taking LSD altogether. It is important to talk to your doctor BEFORE beginning any new drug regimen and ask if acid is safe for you.

Heart conditions such as arrhythmia, congestive heart failure, and hypertension can all be exacerbated by LSD, so it is important to take extra PRECAUTIONS if you have any of these conditions.


Pro Tip: LSD should never be mixed with other drugs, and you should stick to the same dose to help ease the drug’s effects and avoid adverse effects.


Best Place to Buy LSD Online in Canada

If you want to buy LSD online, you need to ensure you’re being safe when you do so. Dodgy dealers out there will water down their acid with FILLER chemicals to maximize profits, and these ingredients can have an ADVERSE effect on your health.

With our trusted seller, you are guaranteed a PURE product that hasn’t been laced or tampered with in any way. 

We pride ourselves on working with REPUTABLE people so that you stay safe if you decide you want to take acid. If you’re ready, why not check out our chosen vendor?


To Conclude

LSD does cause an INCREASED body temperature and heart rate when taken. For most people, this does not pose any danger but could be uncomfortable. It is important to AVOID taking acid if you have pre existing heart conditions or are on any medications that interact with LSD.

LSD can have POSITIVE effects on the mind, and there is a lot of promise through a systematic review of the beneficial effects of classic hallucinogens.

If you do decide to buy LSD online, make sure you use a trusted vendor and never purchase from anyone who cannot provide proof of purity. With our chosen seller, you are guaranteed a SAFE product that hasn’t been tampered with in any way. 



1: Mladěnka P, Applová L, Patočka J, et al. Comprehensive review of cardiovascular toxicity of drugs and related agents. Medicinal Research Reviews. 2018;38(4):1332-1403. doi:10.1002/med.21476

‌2: Ghuran A. The cardiac complications of recreational drug use. Western Journal of Medicine. 2000;173(6):412-415. doi:10.1136/ewjm.173.6.412

‌3: Liechti ME. Modern Clinical Research on LSD. Neuropsychopharmacology. 2017;42(11):2114-2127. doi:10.1038/npp.2017.86

‌4: Hermle L, Simon M, Ruchsow M, Geppert M. Hallucinogen-persisting perception disorder. Therapeutic Advances in Psychopharmacology. 2012;2(5):199-205. doi:10.1177/2045125312451270

‌5: Fuentes JJ, Fonseca F, Elices M, Farré M, Torrens M. Therapeutic Use of LSD in Psychiatry: A Systematic Review of Randomized-Controlled Clinical Trials. Frontiers in Psychiatry. 2020;10. doi:10.3389/fpsyt.2019.00943

6: Krans, B. (2013, August 22). Psychedelic Drugs Linked to Lower Risk of Mental Illness. Healthline. Available at:


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