Your
Vitamin B12 (86) and
Vitamin D (4.5) levels are significantly low, so supplementation is appropriate. The exact treatment and duration depend on your symptoms, CBC and the cause of the deficiency.
For Vitamin B12, please share your CBC/Hb/MCV report and let me know whether you have symptoms such as tingling/numbness, weakness, balance problems or marked fatigue. If you have neurological symptoms or significant anaemia, injections may be preferable; otherwise, adequate-dose oral B12 can often be used.
For Vitamin D, sunlight can help, but it is difficult to prescribe an exact amount of sun exposure because vitamin-D production varies with skin type, season, time of day and location. UV exposure can also increase skin-cancer risk, so prolonged unprotected sun exposure is not recommended. Vitamin D supplementation is generally more reliable for treating a level as low as 4.5
Regarding your
calcium of 10 mg/dL, this is generally within or around the normal range in many laboratories and does not by itself mean that you have hypercalcaemia. Please do not try to lower your calcium on your own or stop calcium-containing foods without medical advice.
I would first confirm the calcium with the laboratory reference range and, if necessary, check
albumin (for corrected calcium) or ionized calcium. If calcium is genuinely elevated, further evaluation may include PTH,
creatinine/eGFR, phosphate and urinary calcium, depending on the clinical situation.
Also, because vitamin D treatment can affect calcium levels, I would review your calcium level and any current calcium/vitamin-D supplements before deciding the vitamin-D dose.
Please send me:
1. Vitamin B12 report
2. Vitamin D (25-OH vitamin D) report
3. CBC with Hb and MCV
4. Calcium + albumin
5. Your age and symptoms
6. Current B12/Vitamin D/calcium supplements and their doses
Then the treatment can be tailored appropriately.