From the Guidelines
Creatine supplementation is not directly known to cause eye shaking (nystagmus), but it may lead to dehydration and electrolyte imbalances that could affect neurological function and result in nystagmus. While creatine is generally considered safe for most people when used at recommended doses (typically 3-5 grams daily) 1, it does not have established mechanisms that would lead to eye movement disorders. Eye shaking could potentially be related to other factors such as dehydration, which can occur if someone taking creatine doesn't increase their water intake sufficiently. Creatine causes water retention in muscles, and inadequate hydration might lead to electrolyte imbalances that could affect neurological function. Additionally, if someone experiences dizziness or vertigo while taking creatine (possibly due to blood pressure changes or dehydration), this might be accompanied by nystagmus.
Key Considerations
- Dehydration and electrolyte imbalances are potential side effects of creatine supplementation that could contribute to nystagmus 1
- Creatine supplementation may lead to changes in blood pressure, which could also contribute to nystagmus 1
- If you're experiencing eye shaking while taking creatine, you should stop supplementation and consult a healthcare provider immediately, as this symptom could indicate a neurological issue unrelated to creatine or a rare adverse reaction that requires medical attention
Recommendations for Use
- Follow the recommended dosage of 3-5 grams daily 1
- Increase water intake to avoid dehydration and electrolyte imbalances
- Monitor for potential side effects, such as dizziness or vertigo, and seek medical attention if they occur It is essential to prioritize the potential risks and benefits of creatine supplementation and to consult with a healthcare provider if you experience any adverse effects, including eye shaking. The most recent and highest quality study on creatine supplementation recommends a loading phase of 20 g/day for 5-7 days, followed by a maintenance phase of 3-5 g/day 1. However, individual results may vary, and it is crucial to weigh the potential benefits against the potential risks and to prioritize your overall health and well-being.
From the Research
Creatine and Eye Shaking
- There is limited research directly linking creatine supplementation to eye shaking, also known as nystagmus 2, 3.
- However, one case study reported a central retinal vein occlusion associated with creatine supplementation and dehydration in a 25-year-old man, which may be related to eye problems 4.
- Electrolyte disturbances and acid-base balance can affect the nervous system, including the peripheral nervous system and central nervous system, and may cause symptoms such as muscle weakness, seizures, and encephalopathy 5, 6.
- It is possible that creatine supplementation, particularly at high doses or in combination with dehydration, may contribute to electrolyte imbalances or other neurometabolic disturbances that could lead to eye shaking or other neurologic complications.
- Further research is needed to fully understand the potential relationship between creatine supplementation and eye shaking.