Common symptoms include: Dry, itchy skin Hair thinning or excessive hair shedding Fatigue and weakness Numbness or tingling in hands and feet Difficulty concentrating or brain fog If left unaddressed, a deficiency can lead to more serious issues, such as anemia or neurological complications

Medications to avoid A person who thinks they have a sulfa allergy should either avoid the following medications or talk to their doctor about taking any of them: antibiotic combination drugs , such as trimethoprim-sulfamethoxazole (Septra and Bactrim) and erythromycin-sulfisoxazole dapsone , a treatment for Hansens disease (leprosy), dermatitis, and some types of pneumonia sulfasalazine (Azulfidine) , which treats Crohns disease, rheumatoid arthritis, and ulcerative colitis sulfacetamide (BLEPH-10) , which are eye drops for treating eye infections sulfadiazine silver (Silvadene) , a cream that doctors prescribe to treat burn infections However, not every medication that contains sulfonamides will trigger a reaction in people with a sulfa allergy
You want to aim for 1.0 to 1.5 grams of protein intake per kilogram of body weight every day
Genetic variability in the VDR may also affect individual responsiveness to supplementation (121)
Soriano FX, Baxter P, Murray LM, Sporn MB, Gillingwater TH, Hardingham GE