Zhewitra 20 mg is commonly used to treat erectile dysfunction (ED), containing the active ingredient vardenafil, which improves blood flow to the penis. If you're looking for natural alternatives, several options may help with ED:

1. L-arginine – An amino acid that helps improve blood circulation by increasing nitric oxide levels in the body.

2. Panax Ginseng – Known as "herbal Viagra," it has been traditionally used to improve sexual function and stamina.

3. Maca Root – Often used to enhance libido and sexual performance.

4. Horny Goat Weed – Contains icariin, which may help increase sexual function.

5. Citrulline – A natural compound found in watermelon, which may also improve blood flow.

While these natural alternatives can support erectile health, it's essential to consult a healthcare provider before trying them, especially if you are currently using prescription medications.