M1 Tesbol — 17α Methyl 1-Testosterone

Pharmaceutical Form: Oral Tablets | Category: Anabolic Androgenic Steroid

Presentation

Each 5mg tablet is light beige, film-coated, round, and concave, with KF wording imprinted on one side. Supplied in plastic blister packs (5 strips × 10 tablets = 50 tablets per box). Each box includes a 10-digit authentication code for verification.

About M1 Tesbol

M1 Tesbol (17α Methyl 1-Testosterone) is the methylated version of the steroid 1-Testosterone. This structural modification enhances oral bioavailability by preventing rapid breakdown in the liver.

Once available legally in the U.S. (now banned but still accessible in some regions), it earned a reputation as one of the most potent prohormone/steroid products, though also known for numerous side effects and limited long-term safety data.

Properties

• Does not aromatize to estrogen.
• Highly anabolic and moderately androgenic.
• Compared to methyltestosterone, it is 910–1600% as anabolic and 100–220% as androgenic.

Reported Side Effects

• Lethargy (mild to severe).
• Increased blood pressure, bloating, joint pain, and cramps.
• Mild headaches, insomnia, aggressiveness, and irritability.
• Decreased appetite (may be beneficial or harmful depending on goals).
• Hepatotoxicity: poses liver toxicity risks similar to other methylated steroids.

Precautions

To minimize side effects:

• Reduce dosage or split into smaller, more frequent doses.
• Avoid alcohol and other liver-toxic substances.
• Support liver health with supplements such as milk thistle, alpha-lipoic acid, or N-acetyl-cysteine (NAC).