Alpha Lipoic Acid Benefits, Side Effects and Dose: 8 Claims Scored on Human Studies

More ALA brought more side effects, not more relief. In the 5-week study, nausea, vomiting and dizziness were rare at 600 mg and more common at 1,200 and 1,800 mg ¹. That is one reason 600 mg is the usual amount.

Heartburn is the complaint owners write about most, and it usually comes from one habit: taking it on an empty stomach. “Started this and had terrible reflux. Then took it with lunch or dinner. Day one nightmares!” Others get a burning throat if they take it with too little water.

Some owners report itching and hives, a few badly enough to need the ER. Stop at the first sign of a rash.

Hair loss is the other big worry: “I have, however, started losing heaps of hair.” No controlled study has measured this. Owners believe ALA uses up biotin, so some take a biotin tablet at a different time of day.

Expect a smell. Many owners notice sulfur-smelling urine, which they call “asparagus pee.” It is harmless and comes from the ALA itself.

Low blood sugar is the one that matters most. ALA can lower blood sugar a little, and that adds up if you take insulin or a pill like glipizide. One owner writes, “it makes me jittery, anxious, and hypoglycemic every time I take it.” Talk to your doctor if you take medicine for blood sugar.

There is also a rare one. A 2021 review found 37 reported cases where ALA set off an immune reaction that caused low blood sugar, mostly at night ¹³. Most were in people of East Asian background, and the lows stopped after ALA was stopped. Food and timing prevent most of these, so here is how much to take, and when.

600 mg a day is the dose used in the biggest nerve studies ^1,4. Owners say the same: “I was taking 600 mg because that was the dose that I saw had been studied.” In the 5-week study, 1,200 and 1,800 mg worked no better and caused more nausea ¹.

Food cuts how much ALA reaches your blood. In a study of 12 volunteers, a big breakfast lowered it by about a quarter ¹². We still side with food, because it is kinder to the stomach and lowers the risk of a low. Owners who take it on an empty stomach are the ones who write about heartburn.

Owners ask how to tell the R from the S kind: “My bottle has neither on it.” Regular ALA is a 50/50 mix of the R and S forms, and it is the form the big nerve studies used. R-ALA absorbs better ¹² and costs 2 to 4 times more, but no study shows it eases burning feet better than 600 mg of regular ALA. The dose and form are settled. Next are the six traps that catch people buying ALA anywhere.

You can buy alpha lipoic acid anywhere. Most bottles we looked at fail at least one of these.

A store bottle can say 600 mg on the front and hold 300 mg per capsule. We checked the kinds of bottles you find at the pharmacy, at big-box stores, online and in TV ads. Six checks separate a useful bottle from a costly one.

We listed the 8 benefits people search for and read the human studies behind each one. We used PubMed, and we preferred large reviews and studies with a placebo group. Every number links to the paper.

We scored only what was studied in people. If a claim rests on lab dishes or animals, it scores low no matter how good it sounds. We also read 924 owner comments from reviews and forums for side effects, timing and dose.

Buying ALA, benfotiamine and B12 as three separate bottles comes to near $30 a month. Owners say what feels fair: “$8 for a one month supply” of ALA and “$15 or less” for benfotiamine. Most are retired and on a budget. “When dealing with neuropathy anything is worth trying, but you can go broke doing so,” one writes.

The $8 bottle is real ALA, and it is fine if ALA is all you want. Read the back first. Many are 200 or 300 mg per capsule, so 600 mg means 2 or 3 pills.

The mail-order nerve formulas are where people get hurt. One owner wrote, “Spin the wheel...oh, that discount doesn't apply.” Another wrote, “I hope they cancel before my next ship date or I'll be out another $50.00.”

The bottle we recommend is $17.50 a bottle. That is less than three separate bottles and most bottles that fail the checks above, so there is no reason to gamble on a cheaper one. The full price shows before you pay, US shipping is free, and the 30-day money-back guarantee needs nothing sent back. The last question is what happens if you wait.

Up to half of people with diabetic nerve damage feel no symptoms at all ¹⁵. It shows up in 10% to 15% of people at type 2 diagnosis and in about half after 10 years ¹⁵.

The numbness is the dangerous part, not the burning. Between 19% and 34% of people with diabetes will get a foot ulcer at some point ¹⁶. Owners describe the slow loss of feeling: “my foot slipping off the brake,” and “I can't feel the pedals on my car to drive.”

Waiting does not make the burning go away on its own. A month of the studied amount is a small step to try while you work on your numbers with your doctor. See the bottle with 600 mg ALA and benfotiamine. Below are the questions owners ask most before they start.

If you have a sore, blister or color change on your foot, this is not your answer. See a doctor or podiatrist today. If your main goal is a lower A1c, ALA is a weak choice, and berberine has much stronger studies.

If you have burning, tingling or pins and needles in your feet, ALA is worth a fair try at 600 mg a day ¹. Most who are helped notice by week 6, and the man with the ice packs stopped needing them. Judge it by 3 months, then try the stop test. About 4 in 10 owners say it did nothing, so judge it on your own feet.

Check our work. Find another bottle with 600 mg ALA, benfotiamine, B1 and methyl B12 in two capsules, a 30-day count and every mg printed, for $17.50 or less. We did not find one. See Dosera's bottle.