Just to be clear - Weightlifting/Body Building is not my primary fitness goal unlike the vast majority of participants at this site. My primary fitness goal is marathon running and the training leading up to that goal. However, I do lift because I don't want to look like a typical long-distance runner. I'm just not anywhere near as 'swole' as most people here! But I saw the other review and thought I'd share my positive experience. I hope it will be helpful to some.
For lifting I started using ArA in early 2014 and, as some ArA reviews have stated, it had a drying affect on my joints - specifically, my knees. I discontinued use but gave ArA another run in early 2015. Again, it noticeably and negatively impacted my knees. In addition, I really stepped-up the HIIT workouts on the treadmill (due to horrible weather here in Ohio - streets were unpassable) which aggravated my knees further.
I researched treatment and stumbled upon reviews for Achilles by Antaeus Labs. If I remember correctly, I found the most convincing reviews at a site that specialized in steroid use. Steroid users took Achilles for relief due to drying of their joints. I thought that - in a round-about way - was a very convincing reason.
I ordered a bottle and followed the recommended dosage. It took a few weeks (3-4) to start feeling relief but there was definitely improvement. After that initial bottle, I did not re-order. I kept my running regimen and my knee pain returned.
I ordered another bottle and have not been without Achilles since (probably since April or May). The dosing calls for 2 caps, 2x per day. I admit I sometimes take 2 caps three times per day. That may not be beneficial but I've not noticed negative effects of an extra dose.
Overall, I attribute Achilles with relieving the initial discomfort in my knees and keeping them relatively pain-free even after putting in close to 1,000 miles of running this year.
5-Stars (backed by repeat purchases).