If you do not have enough red blood cells, your body will not function properly due to a lack of oxygen in your organs and tissue
It also helps to bring the stress hormone down to a healthy level in the nervous system, which is how vitamin B12 injections help to alleviate anxiety and decrease levels of fatigue, as well as boost your metabolism at the same time

Testosterone Replacement Therapy: Nausea or vomiting Infertility or decreased sperm count Testicular shrinkage Worsening of obstructive sleep apnea Increase in cholesterol levels Abnormal spike in blood sugar levels, which can increase the risk of developing Type 2 diabetes Yellowing of the skin or around your eyes Uncomfortable swelling or enlargement of breast tissue (gynecomastia) Redness, warmth around lower leg area Unusual increase in red blood cell count, which can result in high blood pressure, joint/muscle pain, trouble with eyesight or thrombosis (blood clotting) Frequent need to urinate Fluid retention Acne or oily skin Headaches Lumps or hardening around injection site Clomid: Headaches Nausea Bloating Mood swings Diminished sex drive Sperm counts decrease (can be reversed by changing Clomid to another type of estrogen blocker, such as tamoxifen.) Acne Chest tenderness Blurry vision Weight gain High blood pressure (hypertension) Altered taste Asthma Flushing Excess thirst Joint aches Enclomiphene Libido issues Acne A temper if levels get too high Mood swings Depression Mood irritability Anxiety Gynecomastia Headache Nausea Diarrhea Dizziness Common Cold Hot flush Joint pain NOTE: Enclomiphene is the purified isomer of Clomid (Clomiphene Citrate)

Peptides are not foreign substances
I had no symptoms of deficiency
25(OH)D Level Status Typical Approach 100 ng/mL Caution Medical review required before any supplementation