# 5-Alpha Reductase vs Adenosylcobalamin (Dibencozide, B12) — Head-to-Head Comparison

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**Data Source:** Hermetica Superfoods Ingredient Encyclopedia

| Attribute | 5-Alpha Reductase | Adenosylcobalamin (Dibencozide, B12) |
|---|---|---|
| **Evidence Score** | 8/10 | 8/10 |
| **Category** | Enzyme | Vitamin |
| **Also Known As** | 5α-reductase, Steroid 5α-reductase, 3-oxo-5α-steroid 4-dehydrogenase, DHT synthase, Testosterone 5α-reductase, 5AR, Type I and Type II 5α-reductase | 5'-deoxyadenosylcobalamin, Dibencozide, Coenzyme B12, AdoCbl, Vitamin B12 coenzyme, 5'-deoxy-5'-adenosylcobalamin, Active B12 |
| **Overview** | 5-alpha reductase is an enzyme that converts testosterone to dihydrotestosterone (DHT), playing a crucial role in androgen metabolism. Inhibiting this enzyme helps reduce DHT levels, supporting prostate health and potentially slowing male pattern hair loss. | Adenosylcobalamin is the mitochondrial form of vitamin B12 that serves as a cofactor for methylmalonyl-CoA mutase in cellular energy production. It directly supports ATP synthesis and maintains myelin sheath integrity through its role in fatty acid metabolism. |
| **Mechanism of Action** | 5-alpha reductase catalyzes the conversion of testosterone to dihydrotestosterone (DHT) using NADPH as a cofactor. The enzyme exists in two isoforms: Type I (primarily in skin and liver) and Type II (concentrated in prostate tissue). DHT binds to androgen receptors with 3-5 times greater affinity th | Adenosylcobalamin functions as a cofactor for methylmalonyl-CoA mutase, converting methylmalonyl-CoA to succinyl-CoA in the citric acid cycle for ATP production. It facilitates odd-chain fatty acid metabolism and branched-chain amino acid catabolism, supporting mitochondrial energy synthesis. The co |
| **Dosage** | No direct supplementation; modulation through lifestyle and dietary choices. Consult a healthcare provider before use. | Typical dosages range from 1,000 mcg to 5,000 mcg daily, often used in sublingual or injectable forms. Consult a healthcare provider before use. |
| **Safety** | Common side effects include decreased libido (3-5%), erectile dysfunction (2-4%), and reduced ejaculatory volume (1-3%). Post-finasteride syndrome, characterized by persistent sexual and neurological symptoms, affects approximately 1-2% of users even after discontinuation. The enzyme inhibitors may  | Adenosylcobalamin is generally well-tolerated with minimal side effects at doses up to 5mg daily. It may interact with metformin, proton pump inhibitors, and H2 blockers by reducing B12 absorption. Patients with Leber's optic neuropathy should avoid B12 supplements due to potential vision deteriorat |

## 5-Alpha Reductase — Full Health Benefits

- Regulates androgen levels by converting testosterone to dihydrotestosterone (DHT), which helps maintain hormonal balance. - Supports prostate health by reducing DHT accumulation, lowering the risk of benign prostatic hyperplasia (BPH) by up to 35% in clinical studies. - Influences hair growth and scalp health by modulating DHT, a key factor in male and female pattern hair loss. - Enhances skin health by balancing sebum production, reducing acne flare-ups linked to excess androgens. - Promotes reproductive health by ensuring optimal androgen activity, which is essential for libido and fertility. - May support cardiovascular wellness by influencing androgen-mediated lipid metabolism. - Helps maintain muscle mass and bone density by regulating androgenic effects on tissues. - Modulates mood and cognitive function through its impact on neurosteroids derived from androgen metabolism.

**Full profile:** [https://ingredients.hermeticasuperfoods.com/ingredients/5-alpha-reductase](https://ingredients.hermeticasuperfoods.com/ingredients/5-alpha-reductase)

## Adenosylcobalamin (Dibencozide, B12) — Full Health Benefits

- Enhances mitochondrial function, boosting cellular energy production and reducing fatigue. - Supports nerve health by maintaining the integrity of the myelin sheath, protecting against nerve damage. - Improves muscle strength and endurance by facilitating energy metabolism, essential for active lifestyles. - Aids in the synthesis of neurotransmitters, enhancing mood and cognitive performance. - Supports cardiovascular health by reducing homocysteine levels, lowering the risk of heart disease. - Boosts immune function by supporting the production of white blood cells, enhancing the body's defense mechanisms. - Promotes healthy skin by aiding in the production of collagen, improving skin elasticity and reducing wrinkles.

**Full profile:** [https://ingredients.hermeticasuperfoods.com/ingredients/adenosylcobalamin-dibencozide-b12](https://ingredients.hermeticasuperfoods.com/ingredients/adenosylcobalamin-dibencozide-b12)


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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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