With a vitamin B12 level of 208 and vitamin D3 deficiency, symptoms like muscle weakness in your back and neck are common and should be addressed promptly. -For vitamin B12, both oral supplements and injections are effective, but the best option depends on your absorption and severity of symptoms. Consult a healthcare professional before starting any supplement to ensure the right form and dosage for you. -When choosing a whey protein, look for products with minimal added sugars, no artificial additives, and a clear ingredient list. Choose a variant that suits your digestion (such as isolate if you are lactose intolerant). -Nutrient deficiencies can also be improved through diet: include more lean meats, eggs, dairy, fish, fortified cereals, and legumes for B12, and fatty fish, eggs, and fortified foods for vitamin D.

Please ask me directly for details.

Hi You have not mentioned your gender, age, in case there are other medical issues. For general Vitamin B deficiency eat whole grains, green leafy vegetables and fruits( various colors basically, different fruits). I also do not know your foods preferences Especially are you veg or non veg,

Kindly consult with me for  detailed discussion  and further guidance through practo .

For male 34, Good whey protein supplements A good whey protein should be low sugar , no artificial fillers, lab tested for quality, easy to digest Trusted whey protein brands Optimum Nutrition gold standard whey Muscle blaze raw whey isolate Myprotein impact whey Dymatize nutrition elite whey ISO pure low carb whey Take 1scoop (20-25 gm ) within 30-60 min after exercise Mix with water or milk ( if you tolerate) Good vitamin B12 supplements For adults weak muscle, tingling or fatigue, methyl cobalamin form form is best absorbed Healthkart HK vitals B12+ D3 Carbomide forte B12 Garden of Life mykind organics B12 spray Pure Encapsulations B12 Dose : 1000mcg daily or as your doctor suggest Take after food for better absorption Add back and neck stretches daily Do basic strength exercises: superman , planks , gentle rows Get vitamin D checked Stay hydrated and eat enough lean protein: eggs, fish , chicken, dal , tofu

Good morning focus on proper diet for meeting up your nutritional needs rather than focusing on supplement inclusion.

Please connect over consultation As only supplements will not help you better we have to correct other elements also