Testosterone is an essential hormone for the muscle building process. It promotest protein synthesis and the growth of protein tissues with receptors. Its anabolic effects in building more bone and muscle mass allows testosterone to play a vital role in the growth of muscle mass and increased strength.

All together, testosterone plays a pivotal role for muscle tropism in which this hormone will play and important role in replenishing muscle tissue and fiber broken down during workouts. Hence, testosterone is vital for those looking to increase muscle mass, strength, and to improve muscle tone and definition.

With higher levels of testosterone, you’ll be ready to dominate your workout! Higher testosterone levels help promote protein synthesis and muscle growth, higher metabolism, increased bone density and strength, and may have a positive effect on your sexual well-being!

3,120mg D-Aspartic Acid: In a recent clinical trial, subjects who took D-Aspartic Acid increased their testosterone serum levels by an average of 42% in just 12 days. Their luteinizing hormone (LH) levels also increased. By contrast, the placebo group only saw a 2.1% increase in testosterone. Subjects took 3,120mg of D-Aspartic Acid a day - the exact amount in each daily dose of Syntheroid.

D-Aspartic Acid is non-functional amino acid produced naturally in your body. It’s primarily found in the “hotspots” of hormone production - the testes, pituitary gland and hypothalamus.

d-aspartic acid graph

300mg Tribulus Terrestris (40% saponins): A potent, all-natural compound that delivers statistically significant increases in testosterone levels, as well as increasing dihydrotestosterone and dehydroepiandrosterone. It has been shown to improve aphrodisiac activity. Tribulus terrestris is a non-hormonal herb that has been used for hundreds of years to restore and improve libido in men.

Terrestris works with the body to stimulate the production of testosterone and boosts sexual performance. But, more importantly, Tribulus Terrestris helps improve athletic performance. Since this ingredient not in itself is not a hormone, Tribulus Terrestris works to maximize your muscle and gain strength.

300mg Horny Goat Weed (10 Icariin): Also known as epimedium, this powerful sexual enhancer has been shown to improve sexual desire and function in men. Discovered by a Chinese goat herder who found goats who ate this herb to have increased sexual activity, this amazing ingredient has been shown to promote nitric oxide levels in the bloodstream. Horny goat weed promotes greater energy and relaxes smooth muscle simultaneously!

200mg Maca Root: Maca , AKA the “Peruvian SuperFood”, is a root cultivated high the Andes mountains. It’s rich in phytonutrients, amino acids, vitamins and fatty acids. We included it in Syntheroid because it contains sterols that not only boost testosterone levels, but may also blunt the body’s production of estrogen.

200mg Mucuna Pruriens: Mucuna has been used for years to increase muscle mass and boost libido. It works by encouraging the endogenous production of testosterone and human growth hormone. It is a muscle-boosting staple you shouldn’t go without.

200mg Eurycoma Longifolia 20:1: This powerful extract is also known as LongJack and increases IGF1 levels. It is well-known for its ability to improve athletic performance, boost testosterone levels, and inhibit SHBG. Eurycoma longifolia also allows more free testosterone to remain in the bloodstream without increasing estrogen levels, making it the perfect testosterone booster. Eurycoma longifolia also enhances muscle strength and tone, and boosts immune system functions. The bonus is that Eurycoma can reduce body fat levels, fight fatigue, and prevent physical exhaustion.

10mg Boron (Boron AAC): Boron is the forgotten nutrient. In reality, it’s a important trace mineral that’s essential for bone health. In a 2011 clinical study, boron was found to increase free testosterone, decrease SHBG, and decrease estradiol levels in just 7 days.

10mg Bioperine: This patented ingredient is the glue that holds this amazing formula together. It has been proven to improve nutrient absorption and also increases the effectiveness of digestion. It does this safely and makes the intestinal wall more permeable. This acts to increase absorption levels leading to improve the effectiveness of the supportive nutrients that are taken in.


“At 47 years old, I've been weightlifting since I was a teen. Seen and used many different products, especially as I age. I recently started a new job and stopped hitting the gym for four months. Lost lots of strength and some size. Finally started working out again and thought I try a little 'help' in the form of Syntheroid, after reading about it online. After my first workout back I knew, from experience, my recovery time was expected to be 6-7 days. Well after only 4 days I was ready to hit the weights again! Seen gains in strength every work out since. After 4 weeks I'm virtually back lifting as heavy as I was when I stopped for the aforementioned 4 months. Also put on 15 pounds. You get results with Syntheroid. But you need to put hard quality time in the gym.”

Todd R.



Russell Gensler


“Very good supplement!!! Noticed really good improvements in strength, size, endurance and Libido... I'm very well pleased.... So is my wife!”

Marcel F.


“I have tried a number of items similar to this product with varying results. The ingredients in this are well known to promote an increase in natural testosterone production. I have been using it for 3 weeks or so now and have noticed a definite difference in mood and strength. This is not steroids by any means, but it will help out in cases where you want to increase your production due to age etc.”



“I was eating horribly while working out and taking theses supplements. I didn't notice anything but better sleep and energy in the morning on 5 hours sleep routinely. Now eating better after two weeks and it does everything listed. I'm about to order another.”

C. Servio


“So far, 1 week with this product has boosted my energy, sharpened my attention and has really worked well. It has given me that extra boost needed during workouts and just in general. The product is a bit pricey through Amazon for a one month bottle, so I will be shopping around for a more cost efficient supply.”

Adam Hicks

Syntheroid is guaranteed to deliver results! If for ANY reason you are not satisfied, simply contact customer support for instructions on how to return your order of the one bottle you tried and any others in unused and resalable condition for your money back (minus S&H). With a guarantee like this you have virtually nothing to lose. Try Syntheroid today!

Q: When can I expect results with SYNTHEROID?

A: Most users find improved energy and strength during the first 3 days of using SYNTHEROID. Muscle growth and increases in muscle mass will vary depending upon workout intensity and schedules. Individual results will vary, but some see results within the first week while others may take longer to see results.

Q: Will SYNTHEROID cause me to test positive for steroids?

A: SYNTHEROID is not a steroid or prohormone. In fact, SYNTHEROID is created with only safe, all-natural ingredients that will naturally increase your body’s ability to create more testosterone. It does not work with synthetic hormones in any way and will not cause a positive test result for steroids. Before taking SYNTHEROID, we recommend that you consult a physician to see if it is right for you.

Q: How Much is SYNTHEROID?

A: SYNTHEROID normally retails for $95.50, but through this limited introductory offer you can buy SYNTHEROID for just $59.95. That’s 40% off the retail price!

Q: Do I have to exercise and diet to see results?

A: SYNTHEROID works best when it is used in conjunction with a healthy diet and regular exercise. Although SYNTHEROID can help you boost your testosterone levels and cause great results by itself, the best way to get maximum results is by also maximizing your diet and exercise activity.

Q: How quickly will I get my order?

A: To ensure prompt delivery, we ship each order within one business day. Domestic orders are shipped via FedEx Home Delivery (1-5 days), FedEx 2 Day Air, FedEx Standard Overinight, USPS First Class (2-5 days) and USPS Priority (2-3 days). International orders are shipped via FedEx International Mail (10-14 days) and FedEx International Priority (3-5 days, highly recommended).

Q: How does the money back guarantee work?

A: You can receive a full refund for one used bottle and any other bottles in resalable condition less shipping costs. Please contact customer support within 90 days from your purchase date to receive complete instructions for returns.

syntheroid testosterone booster bonus Secratatropin