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Calcium and Gabapentin: what the research found

PubMed indexes 8 records that name Calcium and Gabapentin together, either in the title or in an interaction, co-administration, or pharmacokinetic context. The key findings come first, in the authors’ own words, followed by every study with its design and PubMed link.

A summary of published research, not medical advice. A pharmacist can check any combination against your full list of medicines and supplements.

Key findings

What the studies concluded.

Reviews and human studies first. Each quote is the authors’ own conclusion about their study, not a NutriStack assessment, and a single study is not a consensus.

“This updated review showed that RLS is two to three times more common in patients with CKD compared to the general population. More patients with CKD-A-RLS demonstrated increased mortality, increased incidence of cardiovascular accident, depression, insomnia and impaired quality of life than those with CKD without RLS.”

Safarpour et al. · 2023 · Review or meta-analysis · details

“Long-term use of gabapentinoids is associated with detrimental musculoskeletal outcomes, including increased fracture risk. Therefore, understanding potential complications is essential for clinicians to guide appropriate treatments.”

Reyes Fernandez et al. · 2022 · Human study · details

“By purifying the protein to which gabapentin bound, and determining its identity as the α2δ1 subunit of voltage gated calcium channels, it was possible to make progress in developing new compounds with similar activities to gabapentin, including pregabalin. The recognition of the α2δ1 subunit as the receptor for these drugs also meant that related proteins, such as α2δ3, may be interesting targets for novel pain…”

The research

8 studies naming Calcium and Gabapentin.

Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.

Gabapentin lactam induces neurodevelopmental deficits via calcium-mitochondria-ROS cascade.

Journal of hazardous materials · 2025 · PMID 41075634

Animal study

“Transcriptomic analyses further validated the calcium-mitochondria-ROS cascade as the critical toxicity pathway. This study provides the first evidence that GBP-L, a persistent pharmaceutical transformation product, can disrupt neurodevelopment by perturbing calcium signalling at environmentally relevant concentrations, highlighting the need to establish a comprehensive risk assessment framework that includes transformation products.”

Gu et al. · From the abstract

Names both Calcium and Gabapentin in its title.

Effects of Gabapentin and Pregabalin on Calcium Homeostasis: Implications for Physical Rehabilitation of Musculoskeletal Tissues.

Current osteoporosis reports · 2022 · PMID 36149592

ReviewResearch Support, N.I.H., ExtramuralHuman subjects

“Long-term use of gabapentinoids is associated with detrimental musculoskeletal outcomes, including increased fracture risk. Therefore, understanding potential complications is essential for clinicians to guide appropriate treatments.”

Reyes Fernandez et al. · From the abstract

Names both Calcium and Gabapentin in its title.

Drugging the undruggable: gabapentin, pregabalin and the calcium channel α2δ subunit.

Critical reviews in biochemistry and molecular biology · 2015 · PMID 27112431

ReviewHuman subjects

“By purifying the protein to which gabapentin bound, and determining its identity as the α2δ1 subunit of voltage gated calcium channels, it was possible to make progress in developing new compounds with similar activities to gabapentin, including pregabalin. The recognition of the α2δ1 subunit as the receptor for these drugs also meant that related proteins, such as α2δ3, may be interesting targets for novel pain therapeutics.”

Offord et al. · From the abstract

Names both Calcium and Gabapentin in its title.

The novel anticonvulsant drug, gabapentin (Neurontin), binds to the alpha2delta subunit of a calcium channel.

The Journal of biological chemistry · 1996 · PMID 8621444

Animal study

“Finally, purified L-type Ca2+ channel complexes were fractionated, under dissociating conditions, on an ion-exchange column; [3H]gabapentin binding activity closely followed the elution of the alpha2 delta subunit. [3H]Gabapentin is the first pharmacological agent described that interacts with an alpha2delta subunit of a voltage-dependent Ca2+ channel.”

Gee et al. · From the abstract

Names both Calcium and Gabapentin in its title.

Restless Legs Syndrome in Chronic Kidney Disease- a Systematic Review.

Tremor and other hyperkinetic movements (New York, N.Y.) · 2023 · PMID 37008995

Systematic ReviewHuman subjects

“This updated review showed that RLS is two to three times more common in patients with CKD compared to the general population. More patients with CKD-A-RLS demonstrated increased mortality, increased incidence of cardiovascular accident, depression, insomnia and impaired quality of life than those with CKD without RLS.”

Safarpour et al. · Authors' conclusion

Names Calcium and Gabapentin together in an interaction, co-administration, or pharmacokinetic context.

Patient Case Report: Gabapentin-Induced Hypoglycemia.

Journal of pharmacy practice · 2022 · PMID 32990167

Case ReportsHuman subjects

“Gabapentin appears to have effects on several voltage-gated calcium channels. Hypoglycemia may be due to gabapentin binding to the alpha2delta subunit of the calcium channels in the pancreas. Future research should investigate gabapentin and the potential for hypoglycemia.”

Hayes et al. · Authors' conclusion

Names Calcium and Gabapentin together in an interaction, co-administration, or pharmacokinetic context.

A comparison of the pharmacokinetics and pharmacodynamics of pregabalin and gabapentin.

Clinical pharmacokinetics · 2010 · PMID 20818832

Comparative StudyReview

“As an antiepileptic, pregabalin may be more effective than gabapentin, on the basis of the magnitude of the reduction in the seizure frequency. In conclusion, pregabalin appears to have some distinct pharmacokinetic advantages over gabapentin that may translate into an improved pharmacodynamic effect.”

Bockbrader et al. · From the abstract

Names Calcium and Gabapentin together in an interaction, co-administration, or pharmacokinetic context.

Limitations

What this evidence cannot tell you.

Search-based evidence indexes have real limits, and it is worth being explicit about them:

How to read this page

A literature summary, not guidance.

NutriStack

Track what you actually take.

NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers Calcium, Gabapentin, and several hundred other substances.

Log your routine, get reminders at the times you choose, and scan a label to add a product. The checker is a research and organisation tool, not a clinical decision aid.

NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.