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Source Naturals

L-Methionine Powder, 3.53 oz (100 g)

4.6 · 227 reviews
1,692 ₽

Dietary Supplement Free-Form L-Methionine is an essential sulfur-containing, free-form amino acid. It contributes to the synthesis of S-adenosyl-L-methionine (SAMe), which is necessary for normal brain function, and L-cysteine, which is a component of glutathione, an important antioxidant molecule in the body. L-Methionine is also a transporter of the antioxidant mineral, selenium.

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Dietary Supplement Free-Form L-Methionine is an essential sulfur-containing, free-form amino acid. It contributes to the synthesis of S-adenosyl-L-methionine (SAMe), which is necessary for normal brain function, and L-cysteine, which is a component of glutathione, an important antioxidant molecule in the body. L-Methionine is also a transporter of the antioxidant mineral, selenium.

Customer reviews

5.0
verified purchase
It’s working!

I bought this product for my cat who has kidney issues and crystals. Giving him the proper dosage has kept his levels in an appropriate level and there are no more crystals forming. I am so pleased. If it would just help his waistline I would be even more excited 😉😉😉

11/14/2024
5.0
verified purchase
EXCELLENT!

A few years ago, I had an amino acids test done. I was lacking L-Methionine, among others. I am really happy IHerb carries this great amino acid. I take it especially for it's function on the liver. TX

8/5/2025
5.0
verified purchase
transporter of the antioxidant mineral, selenium.

L-Methionine is an essential sulfur-containing, free-form amino acid. It contributes to the synthesis of S-adenosyl-L-methionine (SAMe), which is necessary for normal brain function, and L-cysteine, which is a component of glutathione, an important antioxidant molecule in the body. L-Methionine is also a transporter of the antioxidant mineral, selenium.

12/15/2024
5.0
verified purchase
Lasts the journey

Quality product that has benefit of internal brain tissue health. Energy boost in middle of day. Taste is similar to cooked potato aroma. Some may find it slight sour, but overall very digestible. Recommended to be consumed between meals. Package size has adequate quantity and stable ingredient composition to last the journey on your supplements supplies box or shelf.

4/22/2025
5.0
verified purchase
great!

I use this as needed to acidify my cats' urine in the case of struvite crystals and/or stones and/or at the first sign of a UTI... It is a great and economical solution as only a tiny little bit is needed... The powder is the perfect format to use in this way.

8/6/2025
5.0
verified purchase
Great Quality and Convenient L-Methionine Powder

I’m happy to find this high-quality, free-form L-Methionine powder from Source Naturals. The powder form is a great option since it tends to have a cleaner composition, free from unnecessary ingredients often found in capsules. This 100 g package size lasts up to two months, which is very convenient. Methionine is an essential amino acid typically found in animal proteins, making it a useful addition to a balanced diet. I’ve noticed benefits for muscle support and energy, especially during training. Overall, I’m satisfied with this product!

9/23/2024
5.0
verified purchase

Methionine is an important amino acid with many benefits, it helps with muscle recovery, skin, brain health, body composition.. Coming in powder form is also very nice, the 100 g size will last a couple of months.

3/12/2026
5.0
verified purchase
Great supplement

This is a great supplement to add to pea protein. It helps complete that protein source apparently, aiding my plant based lifestyle. I think I get value for what I pay for.

1/8/2026
5.0
verified purchase
Methionine!

Good powder easily mixes into any liquid. Not a fan of the smell or taste but that’s hardly an issue once mixed. Supports my overall wellness and I would purchase again!

11/29/2025
5.0
verified purchase
great

yes this was good but my body didnt really like it, wee bit over stimulating, but i still like it

11/19/2025