Your high heart rate and high blood pressure could be influenced by several factors, but your vitamin D level of 20.7 ng/mL is considered low and might contribute indirectly to cardiovascular issues. Your potassium (3.7 mmol/L) and magnesium (1.7 mg/dL) levels are within normal ranges, so they are less likely to be the direct cause.

• Low vitamin D has been associated with increased risk of hypertension (high blood pressure) and may affect heart function, potentially contributing to a higher heart rate.
• Other common causes of high heart rate and blood pressure include stress, dehydration, medication effects, or underlying heart or endocrine conditions.
• Since your vitamin D is low, continuing or starting supplementation like the Gen-D3 Nano 60K Chewable Tablet (containing cholecalciferol) as advised by your doctor may help improve your levels and overall cardiovascular health.

It is important to consult a cardiologist or an internal medicine specialist to evaluate your symptoms thoroughly, rule out other causes, and tailor treatment accordingly. If you experience chest pain, severe headache, dizziness, or shortness of breath, seek emergency care immediately.